summaryrefslogtreecommitdiffstats
diff options
context:
space:
mode:
-rw-r--r--arch/ia64/include/asm/kvm_host.h6
-rw-r--r--arch/ia64/include/asm/pgtable.h2
-rw-r--r--arch/ia64/kernel/irq_ia64.c3
-rw-r--r--arch/ia64/kvm/Kconfig2
-rw-r--r--arch/ia64/kvm/kvm-ia64.c263
-rw-r--r--arch/ia64/kvm/kvm_fw.c28
-rw-r--r--arch/ia64/kvm/lapic.h6
-rw-r--r--arch/ia64/kvm/optvfault.S30
-rw-r--r--arch/ia64/kvm/process.c5
-rw-r--r--arch/ia64/kvm/vcpu.c20
-rw-r--r--arch/ia64/kvm/vmm.c12
-rw-r--r--arch/ia64/kvm/vmm_ivt.S18
-rw-r--r--arch/ia64/kvm/vtlb.c3
-rw-r--r--arch/powerpc/kvm/powerpc.c6
-rw-r--r--arch/s390/include/asm/kvm_host.h5
-rw-r--r--arch/s390/kvm/intercept.c28
-rw-r--r--arch/s390/kvm/interrupt.c59
-rw-r--r--arch/s390/kvm/kvm-s390.c63
-rw-r--r--arch/s390/kvm/kvm-s390.h4
-rw-r--r--arch/s390/kvm/priv.c4
-rw-r--r--arch/s390/kvm/sigp.c16
-rw-r--r--arch/x86/include/asm/cpufeature.h2
-rw-r--r--arch/x86/include/asm/kvm.h1
-rw-r--r--arch/x86/include/asm/kvm_host.h45
-rw-r--r--arch/x86/include/asm/kvm_x86_emulate.h6
-rw-r--r--arch/x86/include/asm/svm.h1
-rw-r--r--arch/x86/include/asm/vmx.h1
-rw-r--r--arch/x86/kernel/cpu/mcheck/mce_64.c1
-rw-r--r--arch/x86/kernel/kvm.c4
-rw-r--r--arch/x86/kernel/smp.c3
-rw-r--r--arch/x86/kvm/Kconfig6
-rw-r--r--arch/x86/kvm/Makefile2
-rw-r--r--arch/x86/kvm/i8254.c109
-rw-r--r--arch/x86/kvm/i8254.h12
-rw-r--r--arch/x86/kvm/irq.c7
-rw-r--r--arch/x86/kvm/kvm_timer.h18
-rw-r--r--arch/x86/kvm/lapic.c251
-rw-r--r--arch/x86/kvm/lapic.h12
-rw-r--r--arch/x86/kvm/mmu.c194
-rw-r--r--arch/x86/kvm/mmu.h5
-rw-r--r--arch/x86/kvm/paging_tmpl.h16
-rw-r--r--arch/x86/kvm/svm.c415
-rw-r--r--arch/x86/kvm/timer.c46
-rw-r--r--arch/x86/kvm/vmx.c721
-rw-r--r--arch/x86/kvm/x86.c409
-rw-r--r--arch/x86/kvm/x86.h14
-rw-r--r--arch/x86/kvm/x86_emulate.c141
-rw-r--r--include/linux/kvm.h46
-rw-r--r--include/linux/kvm_host.h21
-rw-r--r--include/linux/kvm_types.h27
-rw-r--r--virt/kvm/ioapic.c153
-rw-r--r--virt/kvm/ioapic.h27
-rw-r--r--virt/kvm/iommu.c27
-rw-r--r--virt/kvm/irq_comm.c111
-rw-r--r--virt/kvm/kvm_main.c678
55 files changed, 2471 insertions, 1644 deletions
diff --git a/arch/ia64/include/asm/kvm_host.h b/arch/ia64/include/asm/kvm_host.h
index 4542651..5f43697 100644
--- a/arch/ia64/include/asm/kvm_host.h
+++ b/arch/ia64/include/asm/kvm_host.h
@@ -371,6 +371,7 @@ struct kvm_vcpu_arch {
int last_run_cpu;
int vmm_tr_slot;
int vm_tr_slot;
+ int sn_rtc_tr_slot;
#define KVM_MP_STATE_RUNNABLE 0
#define KVM_MP_STATE_UNINITIALIZED 1
@@ -465,6 +466,7 @@ struct kvm_arch {
unsigned long vmm_init_rr;
int online_vcpus;
+ int is_sn2;
struct kvm_ioapic *vioapic;
struct kvm_vm_stat stat;
@@ -472,6 +474,7 @@ struct kvm_arch {
struct list_head assigned_dev_head;
struct iommu_domain *iommu_domain;
+ int iommu_flags;
struct hlist_head irq_ack_notifier_list;
unsigned long irq_sources_bitmap;
@@ -578,6 +581,8 @@ struct kvm_vmm_info{
kvm_vmm_entry *vmm_entry;
kvm_tramp_entry *tramp_entry;
unsigned long vmm_ivt;
+ unsigned long patch_mov_ar;
+ unsigned long patch_mov_ar_sn2;
};
int kvm_highest_pending_irq(struct kvm_vcpu *vcpu);
@@ -585,7 +590,6 @@ int kvm_emulate_halt(struct kvm_vcpu *vcpu);
int kvm_pal_emul(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run);
void kvm_sal_emul(struct kvm_vcpu *vcpu);
-static inline void kvm_inject_nmi(struct kvm_vcpu *vcpu) {}
#endif /* __ASSEMBLY__*/
#endif
diff --git a/arch/ia64/include/asm/pgtable.h b/arch/ia64/include/asm/pgtable.h
index 7a9bff4..0a9cc73 100644
--- a/arch/ia64/include/asm/pgtable.h
+++ b/arch/ia64/include/asm/pgtable.h
@@ -146,6 +146,8 @@
#define PAGE_GATE __pgprot(__ACCESS_BITS | _PAGE_PL_0 | _PAGE_AR_X_RX)
#define PAGE_KERNEL __pgprot(__DIRTY_BITS | _PAGE_PL_0 | _PAGE_AR_RWX)
#define PAGE_KERNELRX __pgprot(__ACCESS_BITS | _PAGE_PL_0 | _PAGE_AR_RX)
+#define PAGE_KERNEL_UC __pgprot(__DIRTY_BITS | _PAGE_PL_0 | _PAGE_AR_RWX | \
+ _PAGE_MA_UC)
# ifndef __ASSEMBLY__
diff --git a/arch/ia64/kernel/irq_ia64.c b/arch/ia64/kernel/irq_ia64.c
index acc4d19..b448197 100644
--- a/arch/ia64/kernel/irq_ia64.c
+++ b/arch/ia64/kernel/irq_ia64.c
@@ -610,6 +610,9 @@ static struct irqaction ipi_irqaction = {
.name = "IPI"
};
+/*
+ * KVM uses this interrupt to force a cpu out of guest mode
+ */
static struct irqaction resched_irqaction = {
.handler = dummy_handler,
.flags = IRQF_DISABLED,
diff --git a/arch/ia64/kvm/Kconfig b/arch/ia64/kvm/Kconfig
index 0a2d6b8..64d5209 100644
--- a/arch/ia64/kvm/Kconfig
+++ b/arch/ia64/kvm/Kconfig
@@ -23,7 +23,7 @@ if VIRTUALIZATION
config KVM
tristate "Kernel-based Virtual Machine (KVM) support"
- depends on HAVE_KVM && EXPERIMENTAL
+ depends on HAVE_KVM && MODULES && EXPERIMENTAL
# for device assignment:
depends on PCI
select PREEMPT_NOTIFIERS
diff --git a/arch/ia64/kvm/kvm-ia64.c b/arch/ia64/kvm/kvm-ia64.c
index d20a5db..80c57b0 100644
--- a/arch/ia64/kvm/kvm-ia64.c
+++ b/arch/ia64/kvm/kvm-ia64.c
@@ -41,6 +41,9 @@
#include <asm/div64.h>
#include <asm/tlb.h>
#include <asm/elf.h>
+#include <asm/sn/addrs.h>
+#include <asm/sn/clksupport.h>
+#include <asm/sn/shub_mmr.h>
#include "misc.h"
#include "vti.h"
@@ -65,6 +68,16 @@ struct kvm_stats_debugfs_item debugfs_entries[] = {
{ NULL }
};
+static unsigned long kvm_get_itc(struct kvm_vcpu *vcpu)
+{
+#if defined(CONFIG_IA64_SGI_SN2) || defined(CONFIG_IA64_GENERIC)
+ if (vcpu->kvm->arch.is_sn2)
+ return rtc_time();
+ else
+#endif
+ return ia64_getreg(_IA64_REG_AR_ITC);
+}
+
static void kvm_flush_icache(unsigned long start, unsigned long len)
{
int l;
@@ -119,8 +132,7 @@ void kvm_arch_hardware_enable(void *garbage)
unsigned long saved_psr;
int slot;
- pte = pte_val(mk_pte_phys(__pa(kvm_vmm_base),
- PAGE_KERNEL));
+ pte = pte_val(mk_pte_phys(__pa(kvm_vmm_base), PAGE_KERNEL));
local_irq_save(saved_psr);
slot = ia64_itr_entry(0x3, KVM_VMM_BASE, pte, KVM_VMM_SHIFT);
local_irq_restore(saved_psr);
@@ -283,6 +295,18 @@ static int handle_sal_call(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run)
}
+static int __apic_accept_irq(struct kvm_vcpu *vcpu, uint64_t vector)
+{
+ struct vpd *vpd = to_host(vcpu->kvm, vcpu->arch.vpd);
+
+ if (!test_and_set_bit(vector, &vpd->irr[0])) {
+ vcpu->arch.irq_new_pending = 1;
+ kvm_vcpu_kick(vcpu);
+ return 1;
+ }
+ return 0;
+}
+
/*
* offset: address offset to IPI space.
* value: deliver value.
@@ -292,20 +316,20 @@ static void vcpu_deliver_ipi(struct kvm_vcpu *vcpu, uint64_t dm,
{
switch (dm) {
case SAPIC_FIXED:
- kvm_apic_set_irq(vcpu, vector, 0);
break;
case SAPIC_NMI:
- kvm_apic_set_irq(vcpu, 2, 0);
+ vector = 2;
break;
case SAPIC_EXTINT:
- kvm_apic_set_irq(vcpu, 0, 0);
+ vector = 0;
break;
case SAPIC_INIT:
case SAPIC_PMI:
default:
printk(KERN_ERR"kvm: Unimplemented Deliver reserved IPI!\n");
- break;
+ return;
}
+ __apic_accept_irq(vcpu, vector);
}
static struct kvm_vcpu *lid_to_vcpu(struct kvm *kvm, unsigned long id,
@@ -413,6 +437,23 @@ static int handle_switch_rr6(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run)
return 1;
}
+static int kvm_sn2_setup_mappings(struct kvm_vcpu *vcpu)
+{
+ unsigned long pte, rtc_phys_addr, map_addr;
+ int slot;
+
+ map_addr = KVM_VMM_BASE + (1UL << KVM_VMM_SHIFT);
+ rtc_phys_addr = LOCAL_MMR_OFFSET | SH_RTC;
+ pte = pte_val(mk_pte_phys(rtc_phys_addr, PAGE_KERNEL_UC));
+ slot = ia64_itr_entry(0x3, map_addr, pte, PAGE_SHIFT);
+ vcpu->arch.sn_rtc_tr_slot = slot;
+ if (slot < 0) {
+ printk(KERN_ERR "Mayday mayday! RTC mapping failed!\n");
+ slot = 0;
+ }
+ return slot;
+}
+
int kvm_emulate_halt(struct kvm_vcpu *vcpu)
{
@@ -426,7 +467,7 @@ int kvm_emulate_halt(struct kvm_vcpu *vcpu)
if (irqchip_in_kernel(vcpu->kvm)) {
- vcpu_now_itc = ia64_getreg(_IA64_REG_AR_ITC) + vcpu->arch.itc_offset;
+ vcpu_now_itc = kvm_get_itc(vcpu) + vcpu->arch.itc_offset;
if (time_after(vcpu_now_itc, vpd->itm)) {
vcpu->arch.timer_check = 1;
@@ -447,10 +488,10 @@ int kvm_emulate_halt(struct kvm_vcpu *vcpu)
hrtimer_cancel(p_ht);
vcpu->arch.ht_active = 0;
- if (test_and_clear_bit(KVM_REQ_UNHALT, &vcpu->requests))
+ if (test_and_clear_bit(KVM_REQ_UNHALT, &vcpu->requests) ||
+ kvm_cpu_has_pending_timer(vcpu))
if (vcpu->arch.mp_state == KVM_MP_STATE_HALTED)
- vcpu->arch.mp_state =
- KVM_MP_STATE_RUNNABLE;
+ vcpu->arch.mp_state = KVM_MP_STATE_RUNNABLE;
if (vcpu->arch.mp_state != KVM_MP_STATE_RUNNABLE)
return -EINTR;
@@ -551,22 +592,35 @@ static int kvm_insert_vmm_mapping(struct kvm_vcpu *vcpu)
if (r < 0)
goto out;
vcpu->arch.vm_tr_slot = r;
+
+#if defined(CONFIG_IA64_SGI_SN2) || defined(CONFIG_IA64_GENERIC)
+ if (kvm->arch.is_sn2) {
+ r = kvm_sn2_setup_mappings(vcpu);
+ if (r < 0)
+ goto out;
+ }
+#endif
+
r = 0;
out:
return r;
-
}
static void kvm_purge_vmm_mapping(struct kvm_vcpu *vcpu)
{
-
+ struct kvm *kvm = vcpu->kvm;
ia64_ptr_entry(0x3, vcpu->arch.vmm_tr_slot);
ia64_ptr_entry(0x3, vcpu->arch.vm_tr_slot);
-
+#if defined(CONFIG_IA64_SGI_SN2) || defined(CONFIG_IA64_GENERIC)
+ if (kvm->arch.is_sn2)
+ ia64_ptr_entry(0x3, vcpu->arch.sn_rtc_tr_slot);
+#endif
}
static int kvm_vcpu_pre_transition(struct kvm_vcpu *vcpu)
{
+ unsigned long psr;
+ int r;
int cpu = smp_processor_id();
if (vcpu->arch.last_run_cpu != cpu ||
@@ -578,36 +632,27 @@ static int kvm_vcpu_pre_transition(struct kvm_vcpu *vcpu)
vcpu->arch.host_rr6 = ia64_get_rr(RR6);
vti_set_rr6(vcpu->arch.vmm_rr);
- return kvm_insert_vmm_mapping(vcpu);
+ local_irq_save(psr);
+ r = kvm_insert_vmm_mapping(vcpu);
+ local_irq_restore(psr);
+ return r;
}
+
static void kvm_vcpu_post_transition(struct kvm_vcpu *vcpu)
{
kvm_purge_vmm_mapping(vcpu);
vti_set_rr6(vcpu->arch.host_rr6);
}
-static int vti_vcpu_run(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run)
+static int __vcpu_run(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run)
{
union context *host_ctx, *guest_ctx;
int r;
- /*Get host and guest context with guest address space.*/
- host_ctx = kvm_get_host_context(vcpu);
- guest_ctx = kvm_get_guest_context(vcpu);
-
- r = kvm_vcpu_pre_transition(vcpu);
- if (r < 0)
- goto out;
- kvm_vmm_info->tramp_entry(host_ctx, guest_ctx);
- kvm_vcpu_post_transition(vcpu);
- r = 0;
-out:
- return r;
-}
-
-static int __vcpu_run(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run)
-{
- int r;
+ /*
+ * down_read() may sleep and return with interrupts enabled
+ */
+ down_read(&vcpu->kvm->slots_lock);
again:
if (signal_pending(current)) {
@@ -616,26 +661,31 @@ again:
goto out;
}
- /*
- * down_read() may sleep and return with interrupts enabled
- */
- down_read(&vcpu->kvm->slots_lock);
-
preempt_disable();
local_irq_disable();
- vcpu->guest_mode = 1;
+ /*Get host and guest context with guest address space.*/
+ host_ctx = kvm_get_host_context(vcpu);
+ guest_ctx = kvm_get_guest_context(vcpu);
+
+ clear_bit(KVM_REQ_KICK, &vcpu->requests);
+
+ r = kvm_vcpu_pre_transition(vcpu);
+ if (r < 0)
+ goto vcpu_run_fail;
+
+ up_read(&vcpu->kvm->slots_lock);
kvm_guest_enter();
- r = vti_vcpu_run(vcpu, kvm_run);
- if (r < 0) {
- local_irq_enable();
- preempt_enable();
- kvm_run->exit_reason = KVM_EXIT_FAIL_ENTRY;
- goto out;
- }
+
+ /*
+ * Transition to the guest
+ */
+ kvm_vmm_info->tramp_entry(host_ctx, guest_ctx);
+
+ kvm_vcpu_post_transition(vcpu);
vcpu->arch.launched = 1;
- vcpu->guest_mode = 0;
+ set_bit(KVM_REQ_KICK, &vcpu->requests);
local_irq_enable();
/*
@@ -646,9 +696,10 @@ again:
*/
barrier();
kvm_guest_exit();
- up_read(&vcpu->kvm->slots_lock);
preempt_enable();
+ down_read(&vcpu->kvm->slots_lock);
+
r = kvm_handle_exit(kvm_run, vcpu);
if (r > 0) {
@@ -657,12 +708,20 @@ again:
}
out:
+ up_read(&vcpu->kvm->slots_lock);
if (r > 0) {
kvm_resched(vcpu);
+ down_read(&vcpu->kvm->slots_lock);
goto again;
}
return r;
+
+vcpu_run_fail:
+ local_irq_enable();
+ preempt_enable();
+ kvm_run->exit_reason = KVM_EXIT_FAIL_ENTRY;
+ goto out;
}
static void kvm_set_mmio_data(struct kvm_vcpu *vcpu)
@@ -788,6 +847,9 @@ struct kvm *kvm_arch_create_vm(void)
if (IS_ERR(kvm))
return ERR_PTR(-ENOMEM);
+
+ kvm->arch.is_sn2 = ia64_platform_is("sn2");
+
kvm_init_vm(kvm);
kvm->arch.online_vcpus = 0;
@@ -884,7 +946,7 @@ int kvm_arch_vcpu_ioctl_set_regs(struct kvm_vcpu *vcpu, struct kvm_regs *regs)
RESTORE_REGS(saved_gp);
vcpu->arch.irq_new_pending = 1;
- vcpu->arch.itc_offset = regs->saved_itc - ia64_getreg(_IA64_REG_AR_ITC);
+ vcpu->arch.itc_offset = regs->saved_itc - kvm_get_itc(vcpu);
set_bit(KVM_REQ_RESUME, &vcpu->requests);
vcpu_put(vcpu);
@@ -1043,10 +1105,6 @@ static void kvm_free_vmm_area(void)
}
}
-static void vti_vcpu_load(struct kvm_vcpu *vcpu, int cpu)
-{
-}
-
static int vti_init_vpd(struct kvm_vcpu *vcpu)
{
int i;
@@ -1165,7 +1223,7 @@ int kvm_arch_vcpu_init(struct kvm_vcpu *vcpu)
regs->cr_iip = PALE_RESET_ENTRY;
/*Initialize itc offset for vcpus*/
- itc_offset = 0UL - ia64_getreg(_IA64_REG_AR_ITC);
+ itc_offset = 0UL - kvm_get_itc(vcpu);
for (i = 0; i < kvm->arch.online_vcpus; i++) {
v = (struct kvm_vcpu *)((char *)vcpu +
sizeof(struct kvm_vcpu_data) * i);
@@ -1237,6 +1295,7 @@ static int vti_vcpu_setup(struct kvm_vcpu *vcpu, int id)
local_irq_save(psr);
r = kvm_insert_vmm_mapping(vcpu);
+ local_irq_restore(psr);
if (r)
goto fail;
r = kvm_vcpu_init(vcpu, vcpu->kvm, id);
@@ -1254,13 +1313,11 @@ static int vti_vcpu_setup(struct kvm_vcpu *vcpu, int id)
goto uninit;
kvm_purge_vmm_mapping(vcpu);
- local_irq_restore(psr);
return 0;
uninit:
kvm_vcpu_uninit(vcpu);
fail:
- local_irq_restore(psr);
return r;
}
@@ -1291,7 +1348,6 @@ struct kvm_vcpu *kvm_arch_vcpu_create(struct kvm *kvm,
vcpu->kvm = kvm;
cpu = get_cpu();
- vti_vcpu_load(vcpu, cpu);
r = vti_vcpu_setup(vcpu, id);
put_cpu();
@@ -1427,7 +1483,7 @@ int kvm_arch_vcpu_ioctl_get_regs(struct kvm_vcpu *vcpu, struct kvm_regs *regs)
}
for (i = 0; i < 4; i++)
regs->insvc[i] = vcpu->arch.insvc[i];
- regs->saved_itc = vcpu->arch.itc_offset + ia64_getreg(_IA64_REG_AR_ITC);
+ regs->saved_itc = vcpu->arch.itc_offset + kvm_get_itc(vcpu);
SAVE_REGS(xtp);
SAVE_REGS(metaphysical_rr0);
SAVE_REGS(metaphysical_rr4);
@@ -1574,6 +1630,7 @@ int kvm_arch_set_memory_region(struct kvm *kvm,
void kvm_arch_flush_shadow(struct kvm *kvm)
{
+ kvm_flush_remote_tlbs(kvm);
}
long kvm_arch_dev_ioctl(struct file *filp,
@@ -1616,8 +1673,37 @@ out:
return 0;
}
+
+/*
+ * On SN2, the ITC isn't stable, so copy in fast path code to use the
+ * SN2 RTC, replacing the ITC based default verion.
+ */
+static void kvm_patch_vmm(struct kvm_vmm_info *vmm_info,
+ struct module *module)
+{
+ unsigned long new_ar, new_ar_sn2;
+ unsigned long module_base;
+
+ if (!ia64_platform_is("sn2"))
+ return;
+
+ module_base = (unsigned long)module->module_core;
+
+ new_ar = kvm_vmm_base + vmm_info->patch_mov_ar - module_base;
+ new_ar_sn2 = kvm_vmm_base + vmm_info->patch_mov_ar_sn2 - module_base;
+
+ printk(KERN_INFO "kvm: Patching ITC emulation to use SGI SN2 RTC "
+ "as source\n");
+
+ /*
+ * Copy the SN2 version of mov_ar into place. They are both
+ * the same size, so 6 bundles is sufficient (6 * 0x10).
+ */
+ memcpy((void *)new_ar, (void *)new_ar_sn2, 0x60);
+}
+
static int kvm_relocate_vmm(struct kvm_vmm_info *vmm_info,
- struct module *module)
+ struct module *module)
{
unsigned long module_base;
unsigned long vmm_size;
@@ -1639,6 +1725,7 @@ static int kvm_relocate_vmm(struct kvm_vmm_info *vmm_info,
return -EFAULT;
memcpy((void *)kvm_vmm_base, (void *)module_base, vmm_size);
+ kvm_patch_vmm(vmm_info, module);
kvm_flush_icache(kvm_vmm_base, vmm_size);
/*Recalculate kvm_vmm_info based on new VMM*/
@@ -1792,38 +1879,24 @@ void kvm_arch_hardware_unsetup(void)
{
}
-static void vcpu_kick_intr(void *info)
-{
-#ifdef DEBUG
- struct kvm_vcpu *vcpu = (struct kvm_vcpu *)info;
- printk(KERN_DEBUG"vcpu_kick_intr %p \n", vcpu);
-#endif
-}
-
void kvm_vcpu_kick(struct kvm_vcpu *vcpu)
{
- int ipi_pcpu = vcpu->cpu;
- int cpu = get_cpu();
+ int me;
+ int cpu = vcpu->cpu;
if (waitqueue_active(&vcpu->wq))
wake_up_interruptible(&vcpu->wq);
- if (vcpu->guest_mode && cpu != ipi_pcpu)
- smp_call_function_single(ipi_pcpu, vcpu_kick_intr, vcpu, 0);
+ me = get_cpu();
+ if (cpu != me && (unsigned) cpu < nr_cpu_ids && cpu_online(cpu))
+ if (!test_and_set_bit(KVM_REQ_KICK, &vcpu->requests))
+ smp_send_reschedule(cpu);
put_cpu();
}
-int kvm_apic_set_irq(struct kvm_vcpu *vcpu, u8 vec, u8 trig)
+int kvm_apic_set_irq(struct kvm_vcpu *vcpu, struct kvm_lapic_irq *irq)
{
-
- struct vpd *vpd = to_host(vcpu->kvm, vcpu->arch.vpd);
-
- if (!test_and_set_bit(vec, &vpd->irr[0])) {
- vcpu->arch.irq_new_pending = 1;
- kvm_vcpu_kick(vcpu);
- return 1;
- }
- return 0;
+ return __apic_accept_irq(vcpu, irq->vector);
}
int kvm_apic_match_physical_addr(struct kvm_lapic *apic, u16 dest)
@@ -1836,20 +1909,18 @@ int kvm_apic_match_logical_addr(struct kvm_lapic *apic, u8 mda)
return 0;
}
-struct kvm_vcpu *kvm_get_lowest_prio_vcpu(struct kvm *kvm, u8 vector,
- unsigned long bitmap)
+int kvm_apic_compare_prio(struct kvm_vcpu *vcpu1, struct kvm_vcpu *vcpu2)
{
- struct kvm_vcpu *lvcpu = kvm->vcpus[0];
- int i;
-
- for (i = 1; i < kvm->arch.online_vcpus; i++) {
- if (!kvm->vcpus[i])
- continue;
- if (lvcpu->arch.xtp > kvm->vcpus[i]->arch.xtp)
- lvcpu = kvm->vcpus[i];
- }
+ return vcpu1->arch.xtp - vcpu2->arch.xtp;
+}
- return lvcpu;
+int kvm_apic_match_dest(struct kvm_vcpu *vcpu, struct kvm_lapic *source,
+ int short_hand, int dest, int dest_mode)
+{
+ struct kvm_lapic *target = vcpu->arch.apic;
+ return (dest_mode == 0) ?
+ kvm_apic_match_physical_addr(target, dest) :
+ kvm_apic_match_logical_addr(target, dest);
}
static int find_highest_bits(int *dat)
@@ -1888,6 +1959,12 @@ int kvm_cpu_has_interrupt(struct kvm_vcpu *vcpu)
return 0;
}
+int kvm_arch_interrupt_allowed(struct kvm_vcpu *vcpu)
+{
+ /* do real check here */
+ return 1;
+}
+
int kvm_cpu_has_pending_timer(struct kvm_vcpu *vcpu)
{
return vcpu->arch.timer_fired;
@@ -1918,6 +1995,7 @@ static int vcpu_reset(struct kvm_vcpu *vcpu)
long psr;
local_irq_save(psr);
r = kvm_insert_vmm_mapping(vcpu);
+ local_irq_restore(psr);
if (r)
goto fail;
@@ -1930,7 +2008,6 @@ static int vcpu_reset(struct kvm_vcpu *vcpu)
kvm_purge_vmm_mapping(vcpu);
r = 0;
fail:
- local_irq_restore(psr);
return r;
}
diff --git a/arch/ia64/kvm/kvm_fw.c b/arch/ia64/kvm/kvm_fw.c
index a8ae52e..e4b8231 100644
--- a/arch/ia64/kvm/kvm_fw.c
+++ b/arch/ia64/kvm/kvm_fw.c
@@ -21,6 +21,9 @@
#include <linux/kvm_host.h>
#include <linux/smp.h>
+#include <asm/sn/addrs.h>
+#include <asm/sn/clksupport.h>
+#include <asm/sn/shub_mmr.h>
#include "vti.h"
#include "misc.h"
@@ -188,12 +191,35 @@ static struct ia64_pal_retval pal_freq_base(struct kvm_vcpu *vcpu)
return result;
}
-static struct ia64_pal_retval pal_freq_ratios(struct kvm_vcpu *vcpu)
+/*
+ * On the SGI SN2, the ITC isn't stable. Emulation backed by the SN2
+ * RTC is used instead. This function patches the ratios from SAL
+ * to match the RTC before providing them to the guest.
+ */
+static void sn2_patch_itc_freq_ratios(struct ia64_pal_retval *result)
{
+ struct pal_freq_ratio *ratio;
+ unsigned long sal_freq, sal_drift, factor;
+
+ result->status = ia64_sal_freq_base(SAL_FREQ_BASE_PLATFORM,
+ &sal_freq, &sal_drift);
+ ratio = (struct pal_freq_ratio *)&result->v2;
+ factor = ((sal_freq * 3) + (sn_rtc_cycles_per_second / 2)) /
+ sn_rtc_cycles_per_second;
+
+ ratio->num = 3;
+ ratio->den = factor;
+}
+static struct ia64_pal_retval pal_freq_ratios(struct kvm_vcpu *vcpu)
+{
struct ia64_pal_retval result;
PAL_CALL(result, PAL_FREQ_RATIOS, 0, 0, 0);
+
+ if (vcpu->kvm->arch.is_sn2)
+ sn2_patch_itc_freq_ratios(&result);
+
return result;
}
diff --git a/arch/ia64/kvm/lapic.h b/arch/ia64/kvm/lapic.h
index 6d6cbcb..ee541ce 100644
--- a/arch/ia64/kvm/lapic.h
+++ b/arch/ia64/kvm/lapic.h
@@ -20,6 +20,10 @@ void kvm_free_lapic(struct kvm_vcpu *vcpu);
int kvm_apic_match_physical_addr(struct kvm_lapic *apic, u16 dest);
int kvm_apic_match_logical_addr(struct kvm_lapic *apic, u8 mda);
-int kvm_apic_set_irq(struct kvm_vcpu *vcpu, u8 vec, u8 trig);
+int kvm_apic_match_dest(struct kvm_vcpu *vcpu, struct kvm_lapic *source,
+ int short_hand, int dest, int dest_mode);
+int kvm_apic_compare_prio(struct kvm_vcpu *vcpu1, struct kvm_vcpu *vcpu2);
+int kvm_apic_set_irq(struct kvm_vcpu *vcpu, struct kvm_lapic_irq *irq);
+#define kvm_apic_present(x) (true)
#endif
diff --git a/arch/ia64/kvm/optvfault.S b/arch/ia64/kvm/optvfault.S
index 32254ce..f793be3 100644
--- a/arch/ia64/kvm/optvfault.S
+++ b/arch/ia64/kvm/optvfault.S
@@ -11,6 +11,7 @@
#include <asm/asmmacro.h>
#include <asm/processor.h>
+#include <asm/kvm_host.h>
#include "vti.h"
#include "asm-offsets.h"
@@ -140,6 +141,35 @@ GLOBAL_ENTRY(kvm_asm_mov_from_ar)
;;
END(kvm_asm_mov_from_ar)
+/*
+ * Special SGI SN2 optimized version of mov_from_ar using the SN2 RTC
+ * clock as it's source for emulating the ITC. This version will be
+ * copied on top of the original version if the host is determined to
+ * be an SN2.
+ */
+GLOBAL_ENTRY(kvm_asm_mov_from_ar_sn2)
+ add r18=VMM_VCPU_ITC_OFS_OFFSET, r21
+ movl r19 = (KVM_VMM_BASE+(1<<KVM_VMM_SHIFT))
+
+ add r16=VMM_VCPU_LAST_ITC_OFFSET,r21
+ extr.u r17=r25,6,7
+ mov r24=b0
+ ;;
+ ld8 r18=[r18]
+ ld8 r19=[r19]
+ addl r20=@gprel(asm_mov_to_reg),gp
+ ;;
+ add r19=r19,r18
+ shladd r17=r17,4,r20
+ ;;
+ adds r30=kvm_resume_to_guest-asm_mov_to_reg,r20
+ st8 [r16] = r19
+ mov b0=r17
+ br.sptk.few b0
+ ;;
+END(kvm_asm_mov_from_ar_sn2)
+
+
// mov r1=rr[r3]
GLOBAL_ENTRY(kvm_asm_mov_from_rr)
diff --git a/arch/ia64/kvm/process.c b/arch/ia64/kvm/process.c
index b1dc809..a8f84da 100644
--- a/arch/ia64/kvm/process.c
+++ b/arch/ia64/kvm/process.c
@@ -652,20 +652,25 @@ void kvm_ia64_handle_break(unsigned long ifa, struct kvm_pt_regs *regs,
unsigned long isr, unsigned long iim)
{
struct kvm_vcpu *v = current_vcpu;
+ long psr;
if (ia64_psr(regs)->cpl == 0) {
/* Allow hypercalls only when cpl = 0. */
if (iim == DOMN_PAL_REQUEST) {
+ local_irq_save(psr);
set_pal_call_data(v);
vmm_transition(v);
get_pal_call_result(v);
vcpu_increment_iip(v);
+ local_irq_restore(psr);
return;
} else if (iim == DOMN_SAL_REQUEST) {
+ local_irq_save(psr);
set_sal_call_data(v);
vmm_transition(v);
get_sal_call_result(v);
vcpu_increment_iip(v);
+ local_irq_restore(psr);
return;
}
}
diff --git a/arch/ia64/kvm/vcpu.c b/arch/ia64/kvm/vcpu.c
index a18ee17..a2c6c15 100644
--- a/arch/ia64/kvm/vcpu.c
+++ b/arch/ia64/kvm/vcpu.c
@@ -788,13 +788,29 @@ void vcpu_set_fpreg(struct kvm_vcpu *vcpu, unsigned long reg,
setfpreg(reg, val, regs); /* FIXME: handle NATs later*/
}
+/*
+ * The Altix RTC is mapped specially here for the vmm module
+ */
+#define SN_RTC_BASE (u64 *)(KVM_VMM_BASE+(1UL<<KVM_VMM_SHIFT))
+static long kvm_get_itc(struct kvm_vcpu *vcpu)
+{
+#if defined(CONFIG_IA64_SGI_SN2) || defined(CONFIG_IA64_GENERIC)
+ struct kvm *kvm = (struct kvm *)KVM_VM_BASE;
+
+ if (kvm->arch.is_sn2)
+ return (*SN_RTC_BASE);
+ else
+#endif
+ return ia64_getreg(_IA64_REG_AR_ITC);
+}
+
/************************************************************************
* lsapic timer
***********************************************************************/
u64 vcpu_get_itc(struct kvm_vcpu *vcpu)
{
unsigned long guest_itc;
- guest_itc = VMX(vcpu, itc_offset) + ia64_getreg(_IA64_REG_AR_ITC);
+ guest_itc = VMX(vcpu, itc_offset) + kvm_get_itc(vcpu);
if (guest_itc >= VMX(vcpu, last_itc)) {
VMX(vcpu, last_itc) = guest_itc;
@@ -809,7 +825,7 @@ static void vcpu_set_itc(struct kvm_vcpu *vcpu, u64 val)
struct kvm_vcpu *v;
struct kvm *kvm;
int i;
- long itc_offset = val - ia64_getreg(_IA64_REG_AR_ITC);
+ long itc_offset = val - kvm_get_itc(vcpu);
unsigned long vitv = VCPU(vcpu, itv);
kvm = (struct kvm *)KVM_VM_BASE;
diff --git a/arch/ia64/kvm/vmm.c b/arch/ia64/kvm/vmm.c
index 9eee5c0..f4b4c89 100644
--- a/arch/ia64/kvm/vmm.c
+++ b/arch/ia64/kvm/vmm.c
@@ -30,15 +30,19 @@ MODULE_AUTHOR("Intel");
MODULE_LICENSE("GPL");
extern char kvm_ia64_ivt;
+extern char kvm_asm_mov_from_ar;
+extern char kvm_asm_mov_from_ar_sn2;
extern fpswa_interface_t *vmm_fpswa_interface;
long vmm_sanity = 1;
struct kvm_vmm_info vmm_info = {
- .module = THIS_MODULE,
- .vmm_entry = vmm_entry,
- .tramp_entry = vmm_trampoline,
- .vmm_ivt = (unsigned long)&kvm_ia64_ivt,
+ .module = THIS_MODULE,
+ .vmm_entry = vmm_entry,
+ .tramp_entry = vmm_trampoline,
+ .vmm_ivt = (unsigned long)&kvm_ia64_ivt,
+ .patch_mov_ar = (unsigned long)&kvm_asm_mov_from_ar,
+ .patch_mov_ar_sn2 = (unsigned long)&kvm_asm_mov_from_ar_sn2,
};
static int __init kvm_vmm_init(void)
diff --git a/arch/ia64/kvm/vmm_ivt.S b/arch/ia64/kvm/vmm_ivt.S
index 3ef1a01..40920c6 100644
--- a/arch/ia64/kvm/vmm_ivt.S
+++ b/arch/ia64/kvm/vmm_ivt.S
@@ -95,7 +95,7 @@ GLOBAL_ENTRY(kvm_vmm_panic)
;;
srlz.i // guarantee that interruption collection is on
;;
- //(p15) ssm psr.i // restore psr.i
+ (p15) ssm psr.i // restore psr.
addl r14=@gprel(ia64_leave_hypervisor),gp
;;
KVM_SAVE_REST
@@ -249,7 +249,7 @@ ENTRY(kvm_break_fault)
;;
srlz.i // guarantee that interruption collection is on
;;
- //(p15)ssm psr.i // restore psr.i
+ (p15)ssm psr.i // restore psr.i
addl r14=@gprel(ia64_leave_hypervisor),gp
;;
KVM_SAVE_REST
@@ -439,7 +439,7 @@ kvm_dispatch_vexirq:
;;
srlz.i // guarantee that interruption collection is on
;;
- //(p15) ssm psr.i // restore psr.i
+ (p15) ssm psr.i // restore psr.i
adds r3=8,r2 // set up second base pointer
;;
KVM_SAVE_REST
@@ -819,7 +819,7 @@ ENTRY(kvm_dtlb_miss_dispatch)
;;
srlz.i // guarantee that interruption collection is on
;;
- //(p15) ssm psr.i // restore psr.i
+ (p15) ssm psr.i // restore psr.i
addl r14=@gprel(ia64_leave_hypervisor_prepare),gp
;;
KVM_SAVE_REST
@@ -842,7 +842,7 @@ ENTRY(kvm_itlb_miss_dispatch)
;;
srlz.i // guarantee that interruption collection is on
;;
- //(p15) ssm psr.i // restore psr.i
+ (p15) ssm psr.i // restore psr.i
addl r14=@gprel(ia64_leave_hypervisor),gp
;;
KVM_SAVE_REST
@@ -871,7 +871,7 @@ ENTRY(kvm_dispatch_reflection)
;;
srlz.i // guarantee that interruption collection is on
;;
- //(p15) ssm psr.i // restore psr.i
+ (p15) ssm psr.i // restore psr.i
addl r14=@gprel(ia64_leave_hypervisor),gp
;;
KVM_SAVE_REST
@@ -898,7 +898,7 @@ ENTRY(kvm_dispatch_virtualization_fault)
;;
srlz.i // guarantee that interruption collection is on
;;
- //(p15) ssm psr.i // restore psr.i
+ (p15) ssm psr.i // restore psr.i
addl r14=@gprel(ia64_leave_hypervisor_prepare),gp
;;
KVM_SAVE_REST
@@ -920,7 +920,7 @@ ENTRY(kvm_dispatch_interrupt)
;;
srlz.i
;;
- //(p15) ssm psr.i
+ (p15) ssm psr.i
addl r14=@gprel(ia64_leave_hypervisor),gp
;;
KVM_SAVE_REST
@@ -1333,7 +1333,7 @@ hostret = r24
;;
(p7) srlz.i
;;
-//(p6) ssm psr.i
+(p6) ssm psr.i
;;
mov rp=rpsave
mov ar.pfs=pfssave
diff --git a/arch/ia64/kvm/vtlb.c b/arch/ia64/kvm/vtlb.c
index 2c2501f..4290a42 100644
--- a/arch/ia64/kvm/vtlb.c
+++ b/arch/ia64/kvm/vtlb.c
@@ -254,7 +254,8 @@ u64 guest_vhpt_lookup(u64 iha, u64 *pte)
"(p7) st8 [%2]=r9;;"
"ssm psr.ic;;"
"srlz.d;;"
- /* "ssm psr.i;;" Once interrupts in vmm open, need fix*/
+ "ssm psr.i;;"
+ "srlz.d;;"
: "=r"(ret) : "r"(iha), "r"(pte):"memory");
return ret;
diff --git a/arch/powerpc/kvm/powerpc.c b/arch/powerpc/kvm/powerpc.c
index 9057335..2cf915e 100644
--- a/arch/powerpc/kvm/powerpc.c
+++ b/arch/powerpc/kvm/powerpc.c
@@ -41,6 +41,12 @@ int kvm_cpu_has_interrupt(struct kvm_vcpu *v)
return !!(v->arch.pending_exceptions);
}
+int kvm_arch_interrupt_allowed(struct kvm_vcpu *vcpu)
+{
+ /* do real check here */
+ return 1;
+}
+
int kvm_arch_vcpu_runnable(struct kvm_vcpu *v)
{
return !(v->arch.msr & MSR_WE);
diff --git a/arch/s390/include/asm/kvm_host.h b/arch/s390/include/asm/kvm_host.h
index 54ea39f..a27d0d5 100644
--- a/arch/s390/include/asm/kvm_host.h
+++ b/arch/s390/include/asm/kvm_host.h
@@ -13,6 +13,8 @@
#ifndef ASM_KVM_HOST_H
#define ASM_KVM_HOST_H
+#include <linux/hrtimer.h>
+#include <linux/interrupt.h>
#include <linux/kvm_host.h>
#include <asm/debug.h>
#include <asm/cpuid.h>
@@ -210,7 +212,8 @@ struct kvm_vcpu_arch {
s390_fp_regs guest_fpregs;
unsigned int guest_acrs[NUM_ACRS];
struct kvm_s390_local_interrupt local_int;
- struct timer_list ckc_timer;
+ struct hrtimer ckc_timer;
+ struct tasklet_struct tasklet;
union {
cpuid_t cpu_id;
u64 stidp_data;
diff --git a/arch/s390/kvm/intercept.c b/arch/s390/kvm/intercept.c
index 9d19803..98997cc 100644
--- a/arch/s390/kvm/intercept.c
+++ b/arch/s390/kvm/intercept.c
@@ -154,17 +154,25 @@ static int handle_stop(struct kvm_vcpu *vcpu)
static int handle_validity(struct kvm_vcpu *vcpu)
{
int viwhy = vcpu->arch.sie_block->ipb >> 16;
+ int rc;
+
vcpu->stat.exit_validity++;
- if (viwhy == 0x37) {
- fault_in_pages_writeable((char __user *)
- vcpu->kvm->arch.guest_origin +
- vcpu->arch.sie_block->prefix,
- PAGE_SIZE);
- return 0;
- }
- VCPU_EVENT(vcpu, 2, "unhandled validity intercept code %d",
- viwhy);
- return -ENOTSUPP;
+ if ((viwhy == 0x37) && (vcpu->arch.sie_block->prefix
+ <= vcpu->kvm->arch.guest_memsize - 2*PAGE_SIZE)){
+ rc = fault_in_pages_writeable((char __user *)
+ vcpu->kvm->arch.guest_origin +
+ vcpu->arch.sie_block->prefix,
+ 2*PAGE_SIZE);
+ if (rc)
+ /* user will receive sigsegv, exit to user */
+ rc = -ENOTSUPP;
+ } else
+ rc = -ENOTSUPP;
+
+ if (rc)
+ VCPU_EVENT(vcpu, 2, "unhandled validity intercept code %d",
+ viwhy);
+ return rc;
}
static int handle_instruction(struct kvm_vcpu *vcpu)
diff --git a/arch/s390/kvm/interrupt.c b/arch/s390/kvm/interrupt.c
index 0189356..f04f530 100644
--- a/arch/s390/kvm/interrupt.c
+++ b/arch/s390/kvm/interrupt.c
@@ -12,6 +12,8 @@
#include <asm/lowcore.h>
#include <asm/uaccess.h>
+#include <linux/hrtimer.h>
+#include <linux/interrupt.h>
#include <linux/kvm_host.h>
#include <linux/signal.h>
#include "kvm-s390.h"
@@ -299,13 +301,13 @@ int kvm_cpu_has_interrupt(struct kvm_vcpu *vcpu)
}
if ((!rc) && atomic_read(&fi->active)) {
- spin_lock_bh(&fi->lock);
+ spin_lock(&fi->lock);
list_for_each_entry(inti, &fi->list, list)
if (__interrupt_is_deliverable(vcpu, inti)) {
rc = 1;
break;
}
- spin_unlock_bh(&fi->lock);
+ spin_unlock(&fi->lock);
}
if ((!rc) && (vcpu->arch.sie_block->ckc <
@@ -318,6 +320,12 @@ int kvm_cpu_has_interrupt(struct kvm_vcpu *vcpu)
return rc;
}
+int kvm_arch_interrupt_allowed(struct kvm_vcpu *vcpu)
+{
+ /* do real check here */
+ return 1;
+}
+
int kvm_cpu_has_pending_timer(struct kvm_vcpu *vcpu)
{
return 0;
@@ -355,14 +363,12 @@ int kvm_s390_handle_wait(struct kvm_vcpu *vcpu)
return 0;
}
- sltime = (vcpu->arch.sie_block->ckc - now) / (0xf4240000ul / HZ) + 1;
+ sltime = ((vcpu->arch.sie_block->ckc - now)*125)>>9;
- vcpu->arch.ckc_timer.expires = jiffies + sltime;
-
- add_timer(&vcpu->arch.ckc_timer);
- VCPU_EVENT(vcpu, 5, "enabled wait timer:%llx jiffies", sltime);
+ hrtimer_start(&vcpu->arch.ckc_timer, ktime_set (0, sltime) , HRTIMER_MODE_REL);
+ VCPU_EVENT(vcpu, 5, "enabled wait via clock comparator: %llx ns", sltime);
no_timer:
- spin_lock_bh(&vcpu->arch.local_int.float_int->lock);
+ spin_lock(&vcpu->arch.local_int.float_int->lock);
spin_lock_bh(&vcpu->arch.local_int.lock);
add_wait_queue(&vcpu->arch.local_int.wq, &wait);
while (list_empty(&vcpu->arch.local_int.list) &&
@@ -371,33 +377,46 @@ no_timer:
!signal_pending(current)) {
set_current_state(TASK_INTERRUPTIBLE);
spin_unlock_bh(&vcpu->arch.local_int.lock);
- spin_unlock_bh(&vcpu->arch.local_int.float_int->lock);
+ spin_unlock(&vcpu->arch.local_int.float_int->lock);
vcpu_put(vcpu);
schedule();
vcpu_load(vcpu);
- spin_lock_bh(&vcpu->arch.local_int.float_int->lock);
+ spin_lock(&vcpu->arch.local_int.float_int->lock);
spin_lock_bh(&vcpu->arch.local_int.lock);
}
__unset_cpu_idle(vcpu);
__set_current_state(TASK_RUNNING);
remove_wait_queue(&vcpu->wq, &wait);
spin_unlock_bh(&vcpu->arch.local_int.lock);
- spin_unlock_bh(&vcpu->arch.local_int.float_int->lock);
- del_timer(&vcpu->arch.ckc_timer);
+ spin_unlock(&vcpu->arch.local_int.float_int->lock);
+ hrtimer_try_to_cancel(&vcpu->arch.ckc_timer);
return 0;
}
-void kvm_s390_idle_wakeup(unsigned long data)
+void kvm_s390_tasklet(unsigned long parm)
{
- struct kvm_vcpu *vcpu = (struct kvm_vcpu *)data;
+ struct kvm_vcpu *vcpu = (struct kvm_vcpu *) parm;
- spin_lock_bh(&vcpu->arch.local_int.lock);
+ spin_lock(&vcpu->arch.local_int.lock);
vcpu->arch.local_int.timer_due = 1;
if (waitqueue_active(&vcpu->arch.local_int.wq))
wake_up_interruptible(&vcpu->arch.local_int.wq);
- spin_unlock_bh(&vcpu->arch.local_int.lock);
+ spin_unlock(&vcpu->arch.local_int.lock);
}
+/*
+ * low level hrtimer wake routine. Because this runs in hardirq context
+ * we schedule a tasklet to do the real work.
+ */
+enum hrtimer_restart kvm_s390_idle_wakeup(struct hrtimer *timer)
+{
+ struct kvm_vcpu *vcpu;
+
+ vcpu = container_of(timer, struct kvm_vcpu, arch.ckc_timer);
+ tasklet_schedule(&vcpu->arch.tasklet);
+
+ return HRTIMER_NORESTART;
+}
void kvm_s390_deliver_pending_interrupts(struct kvm_vcpu *vcpu)
{
@@ -436,7 +455,7 @@ void kvm_s390_deliver_pending_interrupts(struct kvm_vcpu *vcpu)
if (atomic_read(&fi->active)) {
do {
deliver = 0;
- spin_lock_bh(&fi->lock);
+ spin_lock(&fi->lock);
list_for_each_entry_safe(inti, n, &fi->list, list) {
if (__interrupt_is_deliverable(vcpu, inti)) {
list_del(&inti->list);
@@ -447,7 +466,7 @@ void kvm_s390_deliver_pending_interrupts(struct kvm_vcpu *vcpu)
}
if (list_empty(&fi->list))
atomic_set(&fi->active, 0);
- spin_unlock_bh(&fi->lock);
+ spin_unlock(&fi->lock);
if (deliver) {
__do_deliver_interrupt(vcpu, inti);
kfree(inti);
@@ -512,7 +531,7 @@ int kvm_s390_inject_vm(struct kvm *kvm,
mutex_lock(&kvm->lock);
fi = &kvm->arch.float_int;
- spin_lock_bh(&fi->lock);
+ spin_lock(&fi->lock);
list_add_tail(&inti->list, &fi->list);
atomic_set(&fi->active, 1);
sigcpu = find_first_bit(fi->idle_mask, KVM_MAX_VCPUS);
@@ -529,7 +548,7 @@ int kvm_s390_inject_vm(struct kvm *kvm,
if (waitqueue_active(&li->wq))
wake_up_interruptible(&li->wq);
spin_unlock_bh(&li->lock);
- spin_unlock_bh(&fi->lock);
+ spin_unlock(&fi->lock);
mutex_unlock(&kvm->lock);
return 0;
}
diff --git a/arch/s390/kvm/kvm-s390.c b/arch/s390/kvm/kvm-s390.c
index f4d56e9..10bccd1 100644
--- a/arch/s390/kvm/kvm-s390.c
+++ b/arch/s390/kvm/kvm-s390.c
@@ -15,6 +15,7 @@
#include <linux/compiler.h>
#include <linux/err.h>
#include <linux/fs.h>
+#include <linux/hrtimer.h>
#include <linux/init.h>
#include <linux/kvm.h>
#include <linux/kvm_host.h>
@@ -195,6 +196,10 @@ out_nokvm:
void kvm_arch_vcpu_destroy(struct kvm_vcpu *vcpu)
{
VCPU_EVENT(vcpu, 3, "%s", "free cpu");
+ if (vcpu->kvm->arch.sca->cpu[vcpu->vcpu_id].sda ==
+ (__u64) vcpu->arch.sie_block)
+ vcpu->kvm->arch.sca->cpu[vcpu->vcpu_id].sda = 0;
+ smp_mb();
free_page((unsigned long)(vcpu->arch.sie_block));
kvm_vcpu_uninit(vcpu);
kfree(vcpu);
@@ -283,8 +288,10 @@ int kvm_arch_vcpu_setup(struct kvm_vcpu *vcpu)
vcpu->arch.sie_block->gmsor = vcpu->kvm->arch.guest_origin;
vcpu->arch.sie_block->ecb = 2;
vcpu->arch.sie_block->eca = 0xC1002001U;
- setup_timer(&vcpu->arch.ckc_timer, kvm_s390_idle_wakeup,
- (unsigned long) vcpu);
+ hrtimer_init(&vcpu->arch.ckc_timer, CLOCK_REALTIME, HRTIMER_MODE_ABS);
+ tasklet_init(&vcpu->arch.tasklet, kvm_s390_tasklet,
+ (unsigned long) vcpu);
+ vcpu->arch.ckc_timer.function = kvm_s390_idle_wakeup;
get_cpu_id(&vcpu->arch.cpu_id);
vcpu->arch.cpu_id.version = 0xff;
return 0;
@@ -307,19 +314,21 @@ struct kvm_vcpu *kvm_arch_vcpu_create(struct kvm *kvm,
vcpu->arch.sie_block->icpua = id;
BUG_ON(!kvm->arch.sca);
- BUG_ON(kvm->arch.sca->cpu[id].sda);
- kvm->arch.sca->cpu[id].sda = (__u64) vcpu->arch.sie_block;
+ if (!kvm->arch.sca->cpu[id].sda)
+ kvm->arch.sca->cpu[id].sda = (__u64) vcpu->arch.sie_block;
+ else
+ BUG_ON(!kvm->vcpus[id]); /* vcpu does already exist */
vcpu->arch.sie_block->scaoh = (__u32)(((__u64)kvm->arch.sca) >> 32);
vcpu->arch.sie_block->scaol = (__u32)(__u64)kvm->arch.sca;
spin_lock_init(&vcpu->arch.local_int.lock);
INIT_LIST_HEAD(&vcpu->arch.local_int.list);
vcpu->arch.local_int.float_int = &kvm->arch.float_int;
- spin_lock_bh(&kvm->arch.float_int.lock);
+ spin_lock(&kvm->arch.float_int.lock);
kvm->arch.float_int.local_int[id] = &vcpu->arch.local_int;
init_waitqueue_head(&vcpu->arch.local_int.wq);
vcpu->arch.local_int.cpuflags = &vcpu->arch.sie_block->cpuflags;
- spin_unlock_bh(&kvm->arch.float_int.lock);
+ spin_unlock(&kvm->arch.float_int.lock);
rc = kvm_vcpu_init(vcpu, kvm, id);
if (rc)
@@ -478,6 +487,12 @@ int kvm_arch_vcpu_ioctl_run(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run)
vcpu_load(vcpu);
+ /* verify, that memory has been registered */
+ if (!vcpu->kvm->arch.guest_memsize) {
+ vcpu_put(vcpu);
+ return -EINVAL;
+ }
+
if (vcpu->sigset_active)
sigprocmask(SIG_SETMASK, &vcpu->sigset, &sigsaved);
@@ -657,6 +672,8 @@ int kvm_arch_set_memory_region(struct kvm *kvm,
struct kvm_memory_slot old,
int user_alloc)
{
+ int i;
+
/* A few sanity checks. We can have exactly one memory slot which has
to start at guest virtual zero and which has to be located at a
page boundary in userland and which has to end at a page boundary.
@@ -664,7 +681,7 @@ int kvm_arch_set_memory_region(struct kvm *kvm,
vmas. It is okay to mmap() and munmap() stuff in this slot after
doing this call at any time */
- if (mem->slot)
+ if (mem->slot || kvm->arch.guest_memsize)
return -EINVAL;
if (mem->guest_phys_addr)
@@ -676,15 +693,39 @@ int kvm_arch_set_memory_region(struct kvm *kvm,
if (mem->memory_size & (PAGE_SIZE - 1))
return -EINVAL;
+ if (!user_alloc)
+ return -EINVAL;
+
+ /* lock all vcpus */
+ for (i = 0; i < KVM_MAX_VCPUS; ++i) {
+ if (!kvm->vcpus[i])
+ continue;
+ if (!mutex_trylock(&kvm->vcpus[i]->mutex))
+ goto fail_out;
+ }
+
kvm->arch.guest_origin = mem->userspace_addr;
kvm->arch.guest_memsize = mem->memory_size;
- /* FIXME: we do want to interrupt running CPUs and update their memory
- configuration now to avoid race conditions. But hey, changing the
- memory layout while virtual CPUs are running is usually bad
- programming practice. */
+ /* update sie control blocks, and unlock all vcpus */
+ for (i = 0; i < KVM_MAX_VCPUS; ++i) {
+ if (kvm->vcpus[i]) {
+ kvm->vcpus[i]->arch.sie_block->gmsor =
+ kvm->arch.guest_origin;
+ kvm->vcpus[i]->arch.sie_block->gmslm =
+ kvm->arch.guest_memsize +
+ kvm->arch.guest_origin +
+ VIRTIODESCSPACE - 1ul;
+ mutex_unlock(&kvm->vcpus[i]->mutex);
+ }
+ }
return 0;
+
+fail_out:
+ for (; i >= 0; i--)
+ mutex_unlock(&kvm->vcpus[i]->mutex);
+ return -EINVAL;
}
void kvm_arch_flush_shadow(struct kvm *kvm)
diff --git a/arch/s390/kvm/kvm-s390.h b/arch/s390/kvm/kvm-s390.h
index 00bbe69..748fee8 100644
--- a/arch/s390/kvm/kvm-s390.h
+++ b/arch/s390/kvm/kvm-s390.h
@@ -14,6 +14,7 @@
#ifndef ARCH_S390_KVM_S390_H
#define ARCH_S390_KVM_S390_H
+#include <linux/hrtimer.h>
#include <linux/kvm.h>
#include <linux/kvm_host.h>
@@ -41,7 +42,8 @@ static inline int __cpu_is_stopped(struct kvm_vcpu *vcpu)
}
int kvm_s390_handle_wait(struct kvm_vcpu *vcpu);
-void kvm_s390_idle_wakeup(unsigned long data);
+enum hrtimer_restart kvm_s390_idle_wakeup(struct hrtimer *timer);
+void kvm_s390_tasklet(unsigned long parm);
void kvm_s390_deliver_pending_interrupts(struct kvm_vcpu *vcpu);
int kvm_s390_inject_vm(struct kvm *kvm,
struct kvm_s390_interrupt *s390int);
diff --git a/arch/s390/kvm/priv.c b/arch/s390/kvm/priv.c
index 4b88834..93ecd06 100644
--- a/arch/s390/kvm/priv.c
+++ b/arch/s390/kvm/priv.c
@@ -204,11 +204,11 @@ static void handle_stsi_3_2_2(struct kvm_vcpu *vcpu, struct sysinfo_3_2_2 *mem)
int cpus = 0;
int n;
- spin_lock_bh(&fi->lock);
+ spin_lock(&fi->lock);
for (n = 0; n < KVM_MAX_VCPUS; n++)
if (fi->local_int[n])
cpus++;
- spin_unlock_bh(&fi->lock);
+ spin_unlock(&fi->lock);
/* deal with other level 3 hypervisors */
if (stsi(mem, 3, 2, 2) == -ENOSYS)
diff --git a/arch/s390/kvm/sigp.c b/arch/s390/kvm/sigp.c
index f27dbed..3667883 100644
--- a/arch/s390/kvm/sigp.c
+++ b/arch/s390/kvm/sigp.c
@@ -52,7 +52,7 @@ static int __sigp_sense(struct kvm_vcpu *vcpu, u16 cpu_addr,
if (cpu_addr >= KVM_MAX_VCPUS)
return 3; /* not operational */
- spin_lock_bh(&fi->lock);
+ spin_lock(&fi->lock);
if (fi->local_int[cpu_addr] == NULL)
rc = 3; /* not operational */
else if (atomic_read(fi->local_int[cpu_addr]->cpuflags)
@@ -64,7 +64,7 @@ static int __sigp_sense(struct kvm_vcpu *vcpu, u16 cpu_addr,
*reg |= SIGP_STAT_STOPPED;
rc = 1; /* status stored */
}
- spin_unlock_bh(&fi->lock);
+ spin_unlock(&fi->lock);
VCPU_EVENT(vcpu, 4, "sensed status of cpu %x rc %x", cpu_addr, rc);
return rc;
@@ -86,7 +86,7 @@ static int __sigp_emergency(struct kvm_vcpu *vcpu, u16 cpu_addr)
inti->type = KVM_S390_INT_EMERGENCY;
- spin_lock_bh(&fi->lock);
+ spin_lock(&fi->lock);
li = fi->local_int[cpu_addr];
if (li == NULL) {
rc = 3; /* not operational */
@@ -102,7 +102,7 @@ static int __sigp_emergency(struct kvm_vcpu *vcpu, u16 cpu_addr)
spin_unlock_bh(&li->lock);
rc = 0; /* order accepted */
unlock:
- spin_unlock_bh(&fi->lock);
+ spin_unlock(&fi->lock);
VCPU_EVENT(vcpu, 4, "sent sigp emerg to cpu %x", cpu_addr);
return rc;
}
@@ -123,7 +123,7 @@ static int __sigp_stop(struct kvm_vcpu *vcpu, u16 cpu_addr, int store)
inti->type = KVM_S390_SIGP_STOP;
- spin_lock_bh(&fi->lock);
+ spin_lock(&fi->lock);
li = fi->local_int[cpu_addr];
if (li == NULL) {
rc = 3; /* not operational */
@@ -142,7 +142,7 @@ static int __sigp_stop(struct kvm_vcpu *vcpu, u16 cpu_addr, int store)
spin_unlock_bh(&li->lock);
rc = 0; /* order accepted */
unlock:
- spin_unlock_bh(&fi->lock);
+ spin_unlock(&fi->lock);
VCPU_EVENT(vcpu, 4, "sent sigp stop to cpu %x", cpu_addr);
return rc;
}
@@ -188,7 +188,7 @@ static int __sigp_set_prefix(struct kvm_vcpu *vcpu, u16 cpu_addr, u32 address,
if (!inti)
return 2; /* busy */
- spin_lock_bh(&fi->lock);
+ spin_lock(&fi->lock);
li = fi->local_int[cpu_addr];
if ((cpu_addr >= KVM_MAX_VCPUS) || (li == NULL)) {
@@ -220,7 +220,7 @@ static int __sigp_set_prefix(struct kvm_vcpu *vcpu, u16 cpu_addr, u32 address,
out_li:
spin_unlock_bh(&li->lock);
out_fi:
- spin_unlock_bh(&fi->lock);
+ spin_unlock(&fi->lock);
return rc;
}
diff --git a/arch/x86/include/asm/cpufeature.h b/arch/x86/include/asm/cpufeature.h
index 19af421..4a28d22 100644
--- a/arch/x86/include/asm/cpufeature.h
+++ b/arch/x86/include/asm/cpufeature.h
@@ -116,6 +116,8 @@
#define X86_FEATURE_XMM4_1 (4*32+19) /* "sse4_1" SSE-4.1 */
#define X86_FEATURE_XMM4_2 (4*32+20) /* "sse4_2" SSE-4.2 */
#define X86_FEATURE_X2APIC (4*32+21) /* x2APIC */
+#define X86_FEATURE_MOVBE (4*32+22) /* MOVBE instruction */
+#define X86_FEATURE_POPCNT (4*32+23) /* POPCNT instruction */
#define X86_FEATURE_AES (4*32+25) /* AES instructions */
#define X86_FEATURE_XSAVE (4*32+26) /* XSAVE/XRSTOR/XSETBV/XGETBV */
#define X86_FEATURE_OSXSAVE (4*32+27) /* "" XSAVE enabled in the OS */
diff --git a/arch/x86/include/asm/kvm.h b/arch/x86/include/asm/kvm.h
index dc3f6cf..125be8b 100644
--- a/arch/x86/include/asm/kvm.h
+++ b/arch/x86/include/asm/kvm.h
@@ -16,6 +16,7 @@
#define __KVM_HAVE_MSI
#define __KVM_HAVE_USER_NMI
#define __KVM_HAVE_GUEST_DEBUG
+#define __KVM_HAVE_MSIX
/* Architectural interrupt line count. */
#define KVM_NR_INTERRUPTS 256
diff --git a/arch/x86/include/asm/kvm_host.h b/arch/x86/include/asm/kvm_host.h
index f0faf58..eabdc1c 100644
--- a/arch/x86/include/asm/kvm_host.h
+++ b/arch/x86/include/asm/kvm_host.h
@@ -185,6 +185,7 @@ union kvm_mmu_page_role {
unsigned access:3;
unsigned invalid:1;
unsigned cr4_pge:1;
+ unsigned nxe:1;
};
};
@@ -212,7 +213,6 @@ struct kvm_mmu_page {
int multimapped; /* More than one parent_pte? */
int root_count; /* Currently serving as active root */
bool unsync;
- bool global;
unsigned int unsync_children;
union {
u64 *parent_pte; /* !multimapped */
@@ -261,13 +261,11 @@ struct kvm_mmu {
union kvm_mmu_page_role base_role;
u64 *pae_root;
+ u64 rsvd_bits_mask[2][4];
};
struct kvm_vcpu_arch {
u64 host_tsc;
- int interrupt_window_open;
- unsigned long irq_summary; /* bit vector: 1 per word in irq_pending */
- DECLARE_BITMAP(irq_pending, KVM_NR_INTERRUPTS);
/*
* rip and regs accesses must go through
* kvm_{register,rip}_{read,write} functions.
@@ -286,6 +284,7 @@ struct kvm_vcpu_arch {
u64 shadow_efer;
u64 apic_base;
struct kvm_lapic *apic; /* kernel irqchip context */
+ int32_t apic_arb_prio;
int mp_state;
int sipi_vector;
u64 ia32_misc_enable_msr;
@@ -320,6 +319,8 @@ struct kvm_vcpu_arch {
struct kvm_pio_request pio;
void *pio_data;
+ u8 event_exit_inst_len;
+
struct kvm_queued_exception {
bool pending;
bool has_error_code;
@@ -329,11 +330,12 @@ struct kvm_vcpu_arch {
struct kvm_queued_interrupt {
bool pending;
+ bool soft;
u8 nr;
} interrupt;
struct {
- int active;
+ int vm86_active;
u8 save_iopl;
struct kvm_save_segment {
u16 selector;
@@ -356,9 +358,9 @@ struct kvm_vcpu_arch {
unsigned int time_offset;
struct page *time_page;
+ bool singlestep; /* guest is single stepped by KVM */
bool nmi_pending;
bool nmi_injected;
- bool nmi_window_open;
struct mtrr_state_type mtrr_state;
u32 pat;
@@ -392,15 +394,14 @@ struct kvm_arch{
*/
struct list_head active_mmu_pages;
struct list_head assigned_dev_head;
- struct list_head oos_global_pages;
struct iommu_domain *iommu_domain;
+ int iommu_flags;
struct kvm_pic *vpic;
struct kvm_ioapic *vioapic;
struct kvm_pit *vpit;
struct hlist_head irq_ack_notifier_list;
int vapics_in_nmi_mode;
- int round_robin_prev_vcpu;
unsigned int tss_addr;
struct page *apic_access_page;
@@ -423,7 +424,6 @@ struct kvm_vm_stat {
u32 mmu_recycled;
u32 mmu_cache_miss;
u32 mmu_unsync;
- u32 mmu_unsync_global;
u32 remote_tlb_flush;
u32 lpages;
};
@@ -443,7 +443,6 @@ struct kvm_vcpu_stat {
u32 halt_exits;
u32 halt_wakeup;
u32 request_irq_exits;
- u32 request_nmi_exits;
u32 irq_exits;
u32 host_state_reload;
u32 efer_reload;
@@ -511,20 +510,22 @@ struct kvm_x86_ops {
void (*run)(struct kvm_vcpu *vcpu, struct kvm_run *run);
int (*handle_exit)(struct kvm_run *run, struct kvm_vcpu *vcpu);
void (*skip_emulated_instruction)(struct kvm_vcpu *vcpu);
+ void (*set_interrupt_shadow)(struct kvm_vcpu *vcpu, int mask);
+ u32 (*get_interrupt_shadow)(struct kvm_vcpu *vcpu, int mask);
void (*patch_hypercall)(struct kvm_vcpu *vcpu,
unsigned char *hypercall_addr);
- int (*get_irq)(struct kvm_vcpu *vcpu);
- void (*set_irq)(struct kvm_vcpu *vcpu, int vec);
+ void (*set_irq)(struct kvm_vcpu *vcpu);
+ void (*set_nmi)(struct kvm_vcpu *vcpu);
void (*queue_exception)(struct kvm_vcpu *vcpu, unsigned nr,
bool has_error_code, u32 error_code);
- bool (*exception_injected)(struct kvm_vcpu *vcpu);
- void (*inject_pending_irq)(struct kvm_vcpu *vcpu);
- void (*inject_pending_vectors)(struct kvm_vcpu *vcpu,
- struct kvm_run *run);
-
+ int (*interrupt_allowed)(struct kvm_vcpu *vcpu);
+ int (*nmi_allowed)(struct kvm_vcpu *vcpu);
+ void (*enable_nmi_window)(struct kvm_vcpu *vcpu);
+ void (*enable_irq_window)(struct kvm_vcpu *vcpu);
+ void (*update_cr8_intercept)(struct kvm_vcpu *vcpu, int tpr, int irr);
int (*set_tss_addr)(struct kvm *kvm, unsigned int addr);
int (*get_tdp_level)(void);
- int (*get_mt_mask_shift)(void);
+ u64 (*get_mt_mask)(struct kvm_vcpu *vcpu, gfn_t gfn, bool is_mmio);
};
extern struct kvm_x86_ops *kvm_x86_ops;
@@ -538,7 +539,7 @@ int kvm_mmu_setup(struct kvm_vcpu *vcpu);
void kvm_mmu_set_nonpresent_ptes(u64 trap_pte, u64 notrap_pte);
void kvm_mmu_set_base_ptes(u64 base_pte);
void kvm_mmu_set_mask_ptes(u64 user_mask, u64 accessed_mask,
- u64 dirty_mask, u64 nx_mask, u64 x_mask, u64 mt_mask);
+ u64 dirty_mask, u64 nx_mask, u64 x_mask);
int kvm_mmu_reset_context(struct kvm_vcpu *vcpu);
void kvm_mmu_slot_remove_write_access(struct kvm *kvm, int slot);
@@ -552,6 +553,7 @@ int emulator_write_phys(struct kvm_vcpu *vcpu, gpa_t gpa,
const void *val, int bytes);
int kvm_pv_mmu_op(struct kvm_vcpu *vcpu, unsigned long bytes,
gpa_t addr, unsigned long *ret);
+u8 kvm_get_guest_memory_type(struct kvm_vcpu *vcpu, gfn_t gfn);
extern bool tdp_enabled;
@@ -563,6 +565,7 @@ enum emulation_result {
#define EMULTYPE_NO_DECODE (1 << 0)
#define EMULTYPE_TRAP_UD (1 << 1)
+#define EMULTYPE_SKIP (1 << 2)
int emulate_instruction(struct kvm_vcpu *vcpu, struct kvm_run *run,
unsigned long cr2, u16 error_code, int emulation_type);
void kvm_report_emulation_failure(struct kvm_vcpu *cvpu, const char *context);
@@ -638,7 +641,6 @@ void __kvm_mmu_free_some_pages(struct kvm_vcpu *vcpu);
int kvm_mmu_load(struct kvm_vcpu *vcpu);
void kvm_mmu_unload(struct kvm_vcpu *vcpu);
void kvm_mmu_sync_roots(struct kvm_vcpu *vcpu);
-void kvm_mmu_sync_global(struct kvm_vcpu *vcpu);
int kvm_emulate_hypercall(struct kvm_vcpu *vcpu);
@@ -769,6 +771,8 @@ enum {
#define HF_GIF_MASK (1 << 0)
#define HF_HIF_MASK (1 << 1)
#define HF_VINTR_MASK (1 << 2)
+#define HF_NMI_MASK (1 << 3)
+#define HF_IRET_MASK (1 << 4)
/*
* Hardware virtualization extension instructions may fault if a
@@ -791,5 +795,6 @@ asmlinkage void kvm_handle_fault_on_reboot(void);
#define KVM_ARCH_WANT_MMU_NOTIFIER
int kvm_unmap_hva(struct kvm *kvm, unsigned long hva);
int kvm_age_hva(struct kvm *kvm, unsigned long hva);
+int cpuid_maxphyaddr(struct kvm_vcpu *vcpu);
#endif /* _ASM_X86_KVM_HOST_H */
diff --git a/arch/x86/include/asm/kvm_x86_emulate.h b/arch/x86/include/asm/kvm_x86_emulate.h
index 6a15973..b7ed2c4 100644
--- a/arch/x86/include/asm/kvm_x86_emulate.h
+++ b/arch/x86/include/asm/kvm_x86_emulate.h
@@ -143,6 +143,9 @@ struct decode_cache {
struct fetch_cache fetch;
};
+#define X86_SHADOW_INT_MOV_SS 1
+#define X86_SHADOW_INT_STI 2
+
struct x86_emulate_ctxt {
/* Register state before/after emulation. */
struct kvm_vcpu *vcpu;
@@ -152,6 +155,9 @@ struct x86_emulate_ctxt {
int mode;
u32 cs_base;
+ /* interruptibility state, as a result of execution of STI or MOV SS */
+ int interruptibility;
+
/* decode cache */
struct decode_cache decode;
};
diff --git a/arch/x86/include/asm/svm.h b/arch/x86/include/asm/svm.h
index 82ada75..85574b7 100644
--- a/arch/x86/include/asm/svm.h
+++ b/arch/x86/include/asm/svm.h
@@ -225,6 +225,7 @@ struct __attribute__ ((__packed__)) vmcb {
#define SVM_EVTINJ_VALID_ERR (1 << 11)
#define SVM_EXITINTINFO_VEC_MASK SVM_EVTINJ_VEC_MASK
+#define SVM_EXITINTINFO_TYPE_MASK SVM_EVTINJ_TYPE_MASK
#define SVM_EXITINTINFO_TYPE_INTR SVM_EVTINJ_TYPE_INTR
#define SVM_EXITINTINFO_TYPE_NMI SVM_EVTINJ_TYPE_NMI
diff --git a/arch/x86/include/asm/vmx.h b/arch/x86/include/asm/vmx.h
index 498f944..11be5ad 100644
--- a/arch/x86/include/asm/vmx.h
+++ b/arch/x86/include/asm/vmx.h
@@ -247,6 +247,7 @@ enum vmcs_field {
#define EXIT_REASON_MSR_READ 31
#define EXIT_REASON_MSR_WRITE 32
#define EXIT_REASON_MWAIT_INSTRUCTION 36
+#define EXIT_REASON_MCE_DURING_VMENTRY 41
#define EXIT_REASON_TPR_BELOW_THRESHOLD 43
#define EXIT_REASON_APIC_ACCESS 44
#define EXIT_REASON_EPT_VIOLATION 48
diff --git a/arch/x86/kernel/cpu/mcheck/mce_64.c b/arch/x86/kernel/cpu/mcheck/mce_64.c
index 09dd1d4..289cc48 100644
--- a/arch/x86/kernel/cpu/mcheck/mce_64.c
+++ b/arch/x86/kernel/cpu/mcheck/mce_64.c
@@ -420,6 +420,7 @@ void do_machine_check(struct pt_regs * regs, long error_code)
out2:
atomic_dec(&mce_entry);
}
+EXPORT_SYMBOL_GPL(do_machine_check);
#ifdef CONFIG_X86_MCE_INTEL
/***
diff --git a/arch/x86/kernel/kvm.c b/arch/x86/kernel/kvm.c
index 6551ded..a78ecad 100644
--- a/arch/x86/kernel/kvm.c
+++ b/arch/x86/kernel/kvm.c
@@ -27,6 +27,7 @@
#include <linux/mm.h>
#include <linux/highmem.h>
#include <linux/hardirq.h>
+#include <asm/timer.h>
#define MMU_QUEUE_SIZE 1024
@@ -230,6 +231,9 @@ static void paravirt_ops_setup(void)
pv_mmu_ops.lazy_mode.enter = kvm_enter_lazy_mmu;
pv_mmu_ops.lazy_mode.leave = kvm_leave_lazy_mmu;
}
+#ifdef CONFIG_X86_IO_APIC
+ no_timer_check = 1;
+#endif
}
void __init kvm_guest_init(void)
diff --git a/arch/x86/kernel/smp.c b/arch/x86/kernel/smp.c
index f6db48c..28f5fb4 100644
--- a/arch/x86/kernel/smp.c
+++ b/arch/x86/kernel/smp.c
@@ -172,6 +172,9 @@ void smp_reschedule_interrupt(struct pt_regs *regs)
{
ack_APIC_irq();
inc_irq_stat(irq_resched_count);
+ /*
+ * KVM uses this interrupt to force a cpu out of guest mode
+ */
}
void smp_call_function_interrupt(struct pt_regs *regs)
diff --git a/arch/x86/kvm/Kconfig b/arch/x86/kvm/Kconfig
index a58504e..8600a09 100644
--- a/arch/x86/kvm/Kconfig
+++ b/arch/x86/kvm/Kconfig
@@ -50,6 +50,9 @@ config KVM_INTEL
Provides support for KVM on Intel processors equipped with the VT
extensions.
+ To compile this as a module, choose M here: the module
+ will be called kvm-intel.
+
config KVM_AMD
tristate "KVM for AMD processors support"
depends on KVM
@@ -57,6 +60,9 @@ config KVM_AMD
Provides support for KVM on AMD processors equipped with the AMD-V
(SVM) extensions.
+ To compile this as a module, choose M here: the module
+ will be called kvm-amd.
+
config KVM_TRACE
bool "KVM trace support"
depends on KVM && SYSFS
diff --git a/arch/x86/kvm/Makefile b/arch/x86/kvm/Makefile
index d3ec292..b43c4ef 100644
--- a/arch/x86/kvm/Makefile
+++ b/arch/x86/kvm/Makefile
@@ -14,7 +14,7 @@ endif
EXTRA_CFLAGS += -Ivirt/kvm -Iarch/x86/kvm
kvm-objs := $(common-objs) x86.o mmu.o x86_emulate.o i8259.o irq.o lapic.o \
- i8254.o
+ i8254.o timer.o
obj-$(CONFIG_KVM) += kvm.o
kvm-intel-objs = vmx.o
obj-$(CONFIG_KVM_INTEL) += kvm-intel.o
diff --git a/arch/x86/kvm/i8254.c b/arch/x86/kvm/i8254.c
index c13bb92..4d6f0d2 100644
--- a/arch/x86/kvm/i8254.c
+++ b/arch/x86/kvm/i8254.c
@@ -98,6 +98,37 @@ static int pit_get_gate(struct kvm *kvm, int channel)
return kvm->arch.vpit->pit_state.channels[channel].gate;
}
+static s64 __kpit_elapsed(struct kvm *kvm)
+{
+ s64 elapsed;
+ ktime_t remaining;
+ struct kvm_kpit_state *ps = &kvm->arch.vpit->pit_state;
+
+ /*
+ * The Counter does not stop when it reaches zero. In
+ * Modes 0, 1, 4, and 5 the Counter ``wraps around'' to
+ * the highest count, either FFFF hex for binary counting
+ * or 9999 for BCD counting, and continues counting.
+ * Modes 2 and 3 are periodic; the Counter reloads
+ * itself with the initial count and continues counting
+ * from there.
+ */
+ remaining = hrtimer_expires_remaining(&ps->pit_timer.timer);
+ elapsed = ps->pit_timer.period - ktime_to_ns(remaining);
+ elapsed = mod_64(elapsed, ps->pit_timer.period);
+
+ return elapsed;
+}
+
+static s64 kpit_elapsed(struct kvm *kvm, struct kvm_kpit_channel_state *c,
+ int channel)
+{
+ if (channel == 0)
+ return __kpit_elapsed(kvm);
+
+ return ktime_to_ns(ktime_sub(ktime_get(), c->count_load_time));
+}
+
static int pit_get_count(struct kvm *kvm, int channel)
{
struct kvm_kpit_channel_state *c =
@@ -107,7 +138,7 @@ static int pit_get_count(struct kvm *kvm, int channel)
WARN_ON(!mutex_is_locked(&kvm->arch.vpit->pit_state.lock));
- t = ktime_to_ns(ktime_sub(ktime_get(), c->count_load_time));
+ t = kpit_elapsed(kvm, c, channel);
d = muldiv64(t, KVM_PIT_FREQ, NSEC_PER_SEC);
switch (c->mode) {
@@ -137,7 +168,7 @@ static int pit_get_out(struct kvm *kvm, int channel)
WARN_ON(!mutex_is_locked(&kvm->arch.vpit->pit_state.lock));
- t = ktime_to_ns(ktime_sub(ktime_get(), c->count_load_time));
+ t = kpit_elapsed(kvm, c, channel);
d = muldiv64(t, KVM_PIT_FREQ, NSEC_PER_SEC);
switch (c->mode) {
@@ -193,28 +224,6 @@ static void pit_latch_status(struct kvm *kvm, int channel)
}
}
-static int __pit_timer_fn(struct kvm_kpit_state *ps)
-{
- struct kvm_vcpu *vcpu0 = ps->pit->kvm->vcpus[0];
- struct kvm_kpit_timer *pt = &ps->pit_timer;
-
- if (!atomic_inc_and_test(&pt->pending))
- set_bit(KVM_REQ_PENDING_TIMER, &vcpu0->requests);
-
- if (!pt->reinject)
- atomic_set(&pt->pending, 1);
-
- if (vcpu0 && waitqueue_active(&vcpu0->wq))
- wake_up_interruptible(&vcpu0->wq);
-
- hrtimer_add_expires_ns(&pt->timer, pt->period);
- pt->scheduled = hrtimer_get_expires_ns(&pt->timer);
- if (pt->period)
- ps->channels[0].count_load_time = ktime_get();
-
- return (pt->period == 0 ? 0 : 1);
-}
-
int pit_has_pending_timer(struct kvm_vcpu *vcpu)
{
struct kvm_pit *pit = vcpu->kvm->arch.vpit;
@@ -235,21 +244,6 @@ static void kvm_pit_ack_irq(struct kvm_irq_ack_notifier *kian)
spin_unlock(&ps->inject_lock);
}
-static enum hrtimer_restart pit_timer_fn(struct hrtimer *data)
-{
- struct kvm_kpit_state *ps;
- int restart_timer = 0;
-
- ps = container_of(data, struct kvm_kpit_state, pit_timer.timer);
-
- restart_timer = __pit_timer_fn(ps);
-
- if (restart_timer)
- return HRTIMER_RESTART;
- else
- return HRTIMER_NORESTART;
-}
-
void __kvm_migrate_pit_timer(struct kvm_vcpu *vcpu)
{
struct kvm_pit *pit = vcpu->kvm->arch.vpit;
@@ -263,15 +257,26 @@ void __kvm_migrate_pit_timer(struct kvm_vcpu *vcpu)
hrtimer_start_expires(timer, HRTIMER_MODE_ABS);
}
-static void destroy_pit_timer(struct kvm_kpit_timer *pt)
+static void destroy_pit_timer(struct kvm_timer *pt)
{
pr_debug("pit: execute del timer!\n");
hrtimer_cancel(&pt->timer);
}
+static bool kpit_is_periodic(struct kvm_timer *ktimer)
+{
+ struct kvm_kpit_state *ps = container_of(ktimer, struct kvm_kpit_state,
+ pit_timer);
+ return ps->is_periodic;
+}
+
+static struct kvm_timer_ops kpit_ops = {
+ .is_periodic = kpit_is_periodic,
+};
+
static void create_pit_timer(struct kvm_kpit_state *ps, u32 val, int is_period)
{
- struct kvm_kpit_timer *pt = &ps->pit_timer;
+ struct kvm_timer *pt = &ps->pit_timer;
s64 interval;
interval = muldiv64(val, NSEC_PER_SEC, KVM_PIT_FREQ);
@@ -280,8 +285,14 @@ static void create_pit_timer(struct kvm_kpit_state *ps, u32 val, int is_period)
/* TODO The new value only affected after the retriggered */
hrtimer_cancel(&pt->timer);
- pt->period = (is_period == 0) ? 0 : interval;
- pt->timer.function = pit_timer_fn;
+ pt->period = interval;
+ ps->is_periodic = is_period;
+
+ pt->timer.function = kvm_timer_fn;
+ pt->t_ops = &kpit_ops;
+ pt->kvm = ps->pit->kvm;
+ pt->vcpu_id = 0;
+
atomic_set(&pt->pending, 0);
ps->irq_ack = 1;
@@ -298,23 +309,23 @@ static void pit_load_count(struct kvm *kvm, int channel, u32 val)
pr_debug("pit: load_count val is %d, channel is %d\n", val, channel);
/*
- * Though spec said the state of 8254 is undefined after power-up,
- * seems some tricky OS like Windows XP depends on IRQ0 interrupt
- * when booting up.
- * So here setting initialize rate for it, and not a specific number
+ * The largest possible initial count is 0; this is equivalent
+ * to 216 for binary counting and 104 for BCD counting.
*/
if (val == 0)
val = 0x10000;
- ps->channels[channel].count_load_time = ktime_get();
ps->channels[channel].count = val;
- if (channel != 0)
+ if (channel != 0) {
+ ps->channels[channel].count_load_time = ktime_get();
return;
+ }
/* Two types of timer
* mode 1 is one shot, mode 2 is period, otherwise del timer */
switch (ps->channels[0].mode) {
+ case 0:
case 1:
/* FIXME: enhance mode 4 precision */
case 4:
diff --git a/arch/x86/kvm/i8254.h b/arch/x86/kvm/i8254.h
index 6acbe4b..bbd863f 100644
--- a/arch/x86/kvm/i8254.h
+++ b/arch/x86/kvm/i8254.h
@@ -3,15 +3,6 @@
#include "iodev.h"
-struct kvm_kpit_timer {
- struct hrtimer timer;
- int irq;
- s64 period; /* unit: ns */
- s64 scheduled;
- atomic_t pending;
- bool reinject;
-};
-
struct kvm_kpit_channel_state {
u32 count; /* can be 65536 */
u16 latched_count;
@@ -30,7 +21,8 @@ struct kvm_kpit_channel_state {
struct kvm_kpit_state {
struct kvm_kpit_channel_state channels[3];
- struct kvm_kpit_timer pit_timer;
+ struct kvm_timer pit_timer;
+ bool is_periodic;
u32 speaker_data_on;
struct mutex lock;
struct kvm_pit *pit;
diff --git a/arch/x86/kvm/irq.c b/arch/x86/kvm/irq.c
index cf17ed5..96dfbb6 100644
--- a/arch/x86/kvm/irq.c
+++ b/arch/x86/kvm/irq.c
@@ -24,6 +24,7 @@
#include "irq.h"
#include "i8254.h"
+#include "x86.h"
/*
* check if there are pending timer events
@@ -48,6 +49,9 @@ int kvm_cpu_has_interrupt(struct kvm_vcpu *v)
{
struct kvm_pic *s;
+ if (!irqchip_in_kernel(v->kvm))
+ return v->arch.interrupt.pending;
+
if (kvm_apic_has_interrupt(v) == -1) { /* LAPIC */
if (kvm_apic_accept_pic_intr(v)) {
s = pic_irqchip(v->kvm); /* PIC */
@@ -67,6 +71,9 @@ int kvm_cpu_get_interrupt(struct kvm_vcpu *v)
struct kvm_pic *s;
int vector;
+ if (!irqchip_in_kernel(v->kvm))
+ return v->arch.interrupt.nr;
+
vector = kvm_get_apic_interrupt(v); /* APIC */
if (vector == -1) {
if (kvm_apic_accept_pic_intr(v)) {
diff --git a/arch/x86/kvm/kvm_timer.h b/arch/x86/kvm/kvm_timer.h
new file mode 100644
index 0000000..26bd6ba
--- /dev/null
+++ b/arch/x86/kvm/kvm_timer.h
@@ -0,0 +1,18 @@
+
+struct kvm_timer {
+ struct hrtimer timer;
+ s64 period; /* unit: ns */
+ atomic_t pending; /* accumulated triggered timers */
+ bool reinject;
+ struct kvm_timer_ops *t_ops;
+ struct kvm *kvm;
+ int vcpu_id;
+};
+
+struct kvm_timer_ops {
+ bool (*is_periodic)(struct kvm_timer *);
+};
+
+
+enum hrtimer_restart kvm_timer_fn(struct hrtimer *data);
+
diff --git a/arch/x86/kvm/lapic.c b/arch/x86/kvm/lapic.c
index f0b67f2..ae99d83 100644
--- a/arch/x86/kvm/lapic.c
+++ b/arch/x86/kvm/lapic.c
@@ -196,20 +196,15 @@ int kvm_lapic_find_highest_irr(struct kvm_vcpu *vcpu)
}
EXPORT_SYMBOL_GPL(kvm_lapic_find_highest_irr);
-int kvm_apic_set_irq(struct kvm_vcpu *vcpu, u8 vec, u8 trig)
+static int __apic_accept_irq(struct kvm_lapic *apic, int delivery_mode,
+ int vector, int level, int trig_mode);
+
+int kvm_apic_set_irq(struct kvm_vcpu *vcpu, struct kvm_lapic_irq *irq)
{
struct kvm_lapic *apic = vcpu->arch.apic;
- if (!apic_test_and_set_irr(vec, apic)) {
- /* a new pending irq is set in IRR */
- if (trig)
- apic_set_vector(vec, apic->regs + APIC_TMR);
- else
- apic_clear_vector(vec, apic->regs + APIC_TMR);
- kvm_vcpu_kick(apic->vcpu);
- return 1;
- }
- return 0;
+ return __apic_accept_irq(apic, irq->delivery_mode, irq->vector,
+ irq->level, irq->trig_mode);
}
static inline int apic_find_highest_isr(struct kvm_lapic *apic)
@@ -250,7 +245,7 @@ static void apic_set_tpr(struct kvm_lapic *apic, u32 tpr)
int kvm_apic_match_physical_addr(struct kvm_lapic *apic, u16 dest)
{
- return kvm_apic_id(apic) == dest;
+ return dest == 0xff || kvm_apic_id(apic) == dest;
}
int kvm_apic_match_logical_addr(struct kvm_lapic *apic, u8 mda)
@@ -279,37 +274,34 @@ int kvm_apic_match_logical_addr(struct kvm_lapic *apic, u8 mda)
return result;
}
-static int apic_match_dest(struct kvm_vcpu *vcpu, struct kvm_lapic *source,
+int kvm_apic_match_dest(struct kvm_vcpu *vcpu, struct kvm_lapic *source,
int short_hand, int dest, int dest_mode)
{
int result = 0;
struct kvm_lapic *target = vcpu->arch.apic;
apic_debug("target %p, source %p, dest 0x%x, "
- "dest_mode 0x%x, short_hand 0x%x",
+ "dest_mode 0x%x, short_hand 0x%x\n",
target, source, dest, dest_mode, short_hand);
ASSERT(!target);
switch (short_hand) {
case APIC_DEST_NOSHORT:
- if (dest_mode == 0) {
+ if (dest_mode == 0)
/* Physical mode. */
- if ((dest == 0xFF) || (dest == kvm_apic_id(target)))
- result = 1;
- } else
+ result = kvm_apic_match_physical_addr(target, dest);
+ else
/* Logical mode. */
result = kvm_apic_match_logical_addr(target, dest);
break;
case APIC_DEST_SELF:
- if (target == source)
- result = 1;
+ result = (target == source);
break;
case APIC_DEST_ALLINC:
result = 1;
break;
case APIC_DEST_ALLBUT:
- if (target != source)
- result = 1;
+ result = (target != source);
break;
default:
printk(KERN_WARNING "Bad dest shorthand value %x\n",
@@ -327,20 +319,22 @@ static int apic_match_dest(struct kvm_vcpu *vcpu, struct kvm_lapic *source,
static int __apic_accept_irq(struct kvm_lapic *apic, int delivery_mode,
int vector, int level, int trig_mode)
{
- int orig_irr, result = 0;
+ int result = 0;
struct kvm_vcpu *vcpu = apic->vcpu;
switch (delivery_mode) {
- case APIC_DM_FIXED:
case APIC_DM_LOWEST:
+ vcpu->arch.apic_arb_prio++;
+ case APIC_DM_FIXED:
/* FIXME add logic for vcpu on reset */
if (unlikely(!apic_enabled(apic)))
break;
- orig_irr = apic_test_and_set_irr(vector, apic);
- if (orig_irr && trig_mode) {
- apic_debug("level trig mode repeatedly for vector %d",
- vector);
+ result = !apic_test_and_set_irr(vector, apic);
+ if (!result) {
+ if (trig_mode)
+ apic_debug("level trig mode repeatedly for "
+ "vector %d", vector);
break;
}
@@ -349,10 +343,7 @@ static int __apic_accept_irq(struct kvm_lapic *apic, int delivery_mode,
apic_set_vector(vector, apic->regs + APIC_TMR);
} else
apic_clear_vector(vector, apic->regs + APIC_TMR);
-
kvm_vcpu_kick(vcpu);
-
- result = (orig_irr == 0);
break;
case APIC_DM_REMRD:
@@ -364,12 +355,14 @@ static int __apic_accept_irq(struct kvm_lapic *apic, int delivery_mode,
break;
case APIC_DM_NMI:
+ result = 1;
kvm_inject_nmi(vcpu);
kvm_vcpu_kick(vcpu);
break;
case APIC_DM_INIT:
if (level) {
+ result = 1;
if (vcpu->arch.mp_state == KVM_MP_STATE_RUNNABLE)
printk(KERN_DEBUG
"INIT on a runnable vcpu %d\n",
@@ -386,6 +379,7 @@ static int __apic_accept_irq(struct kvm_lapic *apic, int delivery_mode,
apic_debug("SIPI to vcpu %d vector 0x%02x\n",
vcpu->vcpu_id, vector);
if (vcpu->arch.mp_state == KVM_MP_STATE_INIT_RECEIVED) {
+ result = 1;
vcpu->arch.sipi_vector = vector;
vcpu->arch.mp_state = KVM_MP_STATE_SIPI_RECEIVED;
kvm_vcpu_kick(vcpu);
@@ -408,43 +402,9 @@ static int __apic_accept_irq(struct kvm_lapic *apic, int delivery_mode,
return result;
}
-static struct kvm_lapic *kvm_apic_round_robin(struct kvm *kvm, u8 vector,
- unsigned long bitmap)
-{
- int last;
- int next;
- struct kvm_lapic *apic = NULL;
-
- last = kvm->arch.round_robin_prev_vcpu;
- next = last;
-
- do {
- if (++next == KVM_MAX_VCPUS)
- next = 0;
- if (kvm->vcpus[next] == NULL || !test_bit(next, &bitmap))
- continue;
- apic = kvm->vcpus[next]->arch.apic;
- if (apic && apic_enabled(apic))
- break;
- apic = NULL;
- } while (next != last);
- kvm->arch.round_robin_prev_vcpu = next;
-
- if (!apic)
- printk(KERN_DEBUG "vcpu not ready for apic_round_robin\n");
-
- return apic;
-}
-
-struct kvm_vcpu *kvm_get_lowest_prio_vcpu(struct kvm *kvm, u8 vector,
- unsigned long bitmap)
+int kvm_apic_compare_prio(struct kvm_vcpu *vcpu1, struct kvm_vcpu *vcpu2)
{
- struct kvm_lapic *apic;
-
- apic = kvm_apic_round_robin(kvm, vector, bitmap);
- if (apic)
- return apic->vcpu;
- return NULL;
+ return vcpu1->arch.apic_arb_prio - vcpu2->arch.apic_arb_prio;
}
static void apic_set_eoi(struct kvm_lapic *apic)
@@ -472,47 +432,24 @@ static void apic_send_ipi(struct kvm_lapic *apic)
{
u32 icr_low = apic_get_reg(apic, APIC_ICR);
u32 icr_high = apic_get_reg(apic, APIC_ICR2);
+ struct kvm_lapic_irq irq;
- unsigned int dest = GET_APIC_DEST_FIELD(icr_high);
- unsigned int short_hand = icr_low & APIC_SHORT_MASK;
- unsigned int trig_mode = icr_low & APIC_INT_LEVELTRIG;
- unsigned int level = icr_low & APIC_INT_ASSERT;
- unsigned int dest_mode = icr_low & APIC_DEST_MASK;
- unsigned int delivery_mode = icr_low & APIC_MODE_MASK;
- unsigned int vector = icr_low & APIC_VECTOR_MASK;
-
- struct kvm_vcpu *target;
- struct kvm_vcpu *vcpu;
- unsigned long lpr_map = 0;
- int i;
+ irq.vector = icr_low & APIC_VECTOR_MASK;
+ irq.delivery_mode = icr_low & APIC_MODE_MASK;
+ irq.dest_mode = icr_low & APIC_DEST_MASK;
+ irq.level = icr_low & APIC_INT_ASSERT;
+ irq.trig_mode = icr_low & APIC_INT_LEVELTRIG;
+ irq.shorthand = icr_low & APIC_SHORT_MASK;
+ irq.dest_id = GET_APIC_DEST_FIELD(icr_high);
apic_debug("icr_high 0x%x, icr_low 0x%x, "
"short_hand 0x%x, dest 0x%x, trig_mode 0x%x, level 0x%x, "
"dest_mode 0x%x, delivery_mode 0x%x, vector 0x%x\n",
- icr_high, icr_low, short_hand, dest,
- trig_mode, level, dest_mode, delivery_mode, vector);
-
- for (i = 0; i < KVM_MAX_VCPUS; i++) {
- vcpu = apic->vcpu->kvm->vcpus[i];
- if (!vcpu)
- continue;
-
- if (vcpu->arch.apic &&
- apic_match_dest(vcpu, apic, short_hand, dest, dest_mode)) {
- if (delivery_mode == APIC_DM_LOWEST)
- set_bit(vcpu->vcpu_id, &lpr_map);
- else
- __apic_accept_irq(vcpu->arch.apic, delivery_mode,
- vector, level, trig_mode);
- }
- }
+ icr_high, icr_low, irq.shorthand, irq.dest_id,
+ irq.trig_mode, irq.level, irq.dest_mode, irq.delivery_mode,
+ irq.vector);
- if (delivery_mode == APIC_DM_LOWEST) {
- target = kvm_get_lowest_prio_vcpu(vcpu->kvm, vector, lpr_map);
- if (target != NULL)
- __apic_accept_irq(target->arch.apic, delivery_mode,
- vector, level, trig_mode);
- }
+ kvm_irq_delivery_to_apic(apic->vcpu->kvm, apic, &irq);
}
static u32 apic_get_tmcct(struct kvm_lapic *apic)
@@ -527,12 +464,13 @@ static u32 apic_get_tmcct(struct kvm_lapic *apic)
if (apic_get_reg(apic, APIC_TMICT) == 0)
return 0;
- remaining = hrtimer_expires_remaining(&apic->timer.dev);
+ remaining = hrtimer_expires_remaining(&apic->lapic_timer.timer);
if (ktime_to_ns(remaining) < 0)
remaining = ktime_set(0, 0);
- ns = mod_64(ktime_to_ns(remaining), apic->timer.period);
- tmcct = div64_u64(ns, (APIC_BUS_CYCLE_NS * apic->timer.divide_count));
+ ns = mod_64(ktime_to_ns(remaining), apic->lapic_timer.period);
+ tmcct = div64_u64(ns,
+ (APIC_BUS_CYCLE_NS * apic->divide_count));
return tmcct;
}
@@ -619,25 +557,25 @@ static void update_divide_count(struct kvm_lapic *apic)
tdcr = apic_get_reg(apic, APIC_TDCR);
tmp1 = tdcr & 0xf;
tmp2 = ((tmp1 & 0x3) | ((tmp1 & 0x8) >> 1)) + 1;
- apic->timer.divide_count = 0x1 << (tmp2 & 0x7);
+ apic->divide_count = 0x1 << (tmp2 & 0x7);
apic_debug("timer divide count is 0x%x\n",
- apic->timer.divide_count);
+ apic->divide_count);
}
static void start_apic_timer(struct kvm_lapic *apic)
{
- ktime_t now = apic->timer.dev.base->get_time();
+ ktime_t now = apic->lapic_timer.timer.base->get_time();
- apic->timer.period = apic_get_reg(apic, APIC_TMICT) *
- APIC_BUS_CYCLE_NS * apic->timer.divide_count;
- atomic_set(&apic->timer.pending, 0);
+ apic->lapic_timer.period = apic_get_reg(apic, APIC_TMICT) *
+ APIC_BUS_CYCLE_NS * apic->divide_count;
+ atomic_set(&apic->lapic_timer.pending, 0);
- if (!apic->timer.period)
+ if (!apic->lapic_timer.period)
return;
- hrtimer_start(&apic->timer.dev,
- ktime_add_ns(now, apic->timer.period),
+ hrtimer_start(&apic->lapic_timer.timer,
+ ktime_add_ns(now, apic->lapic_timer.period),
HRTIMER_MODE_ABS);
apic_debug("%s: bus cycle is %" PRId64 "ns, now 0x%016"
@@ -646,9 +584,9 @@ static void start_apic_timer(struct kvm_lapic *apic)
"expire @ 0x%016" PRIx64 ".\n", __func__,
APIC_BUS_CYCLE_NS, ktime_to_ns(now),
apic_get_reg(apic, APIC_TMICT),
- apic->timer.period,
+ apic->lapic_timer.period,
ktime_to_ns(ktime_add_ns(now,
- apic->timer.period)));
+ apic->lapic_timer.period)));
}
static void apic_manage_nmi_watchdog(struct kvm_lapic *apic, u32 lvt0_val)
@@ -730,7 +668,7 @@ static void apic_mmio_write(struct kvm_io_device *this,
apic_set_reg(apic, APIC_LVTT + 0x10 * i,
lvt_val | APIC_LVT_MASKED);
}
- atomic_set(&apic->timer.pending, 0);
+ atomic_set(&apic->lapic_timer.pending, 0);
}
break;
@@ -762,7 +700,7 @@ static void apic_mmio_write(struct kvm_io_device *this,
break;
case APIC_TMICT:
- hrtimer_cancel(&apic->timer.dev);
+ hrtimer_cancel(&apic->lapic_timer.timer);
apic_set_reg(apic, APIC_TMICT, val);
start_apic_timer(apic);
return;
@@ -802,7 +740,7 @@ void kvm_free_lapic(struct kvm_vcpu *vcpu)
if (!vcpu->arch.apic)
return;
- hrtimer_cancel(&vcpu->arch.apic->timer.dev);
+ hrtimer_cancel(&vcpu->arch.apic->lapic_timer.timer);
if (vcpu->arch.apic->regs_page)
__free_page(vcpu->arch.apic->regs_page);
@@ -880,7 +818,7 @@ void kvm_lapic_reset(struct kvm_vcpu *vcpu)
ASSERT(apic != NULL);
/* Stop the timer in case it's a reset to an active apic */
- hrtimer_cancel(&apic->timer.dev);
+ hrtimer_cancel(&apic->lapic_timer.timer);
apic_set_reg(apic, APIC_ID, vcpu->vcpu_id << 24);
apic_set_reg(apic, APIC_LVR, APIC_VERSION);
@@ -905,11 +843,13 @@ void kvm_lapic_reset(struct kvm_vcpu *vcpu)
apic_set_reg(apic, APIC_TMR + 0x10 * i, 0);
}
update_divide_count(apic);
- atomic_set(&apic->timer.pending, 0);
+ atomic_set(&apic->lapic_timer.pending, 0);
if (vcpu->vcpu_id == 0)
vcpu->arch.apic_base |= MSR_IA32_APICBASE_BSP;
apic_update_ppr(apic);
+ vcpu->arch.apic_arb_prio = 0;
+
apic_debug(KERN_INFO "%s: vcpu=%p, id=%d, base_msr="
"0x%016" PRIx64 ", base_address=0x%0lx.\n", __func__,
vcpu, kvm_apic_id(apic),
@@ -917,16 +857,14 @@ void kvm_lapic_reset(struct kvm_vcpu *vcpu)
}
EXPORT_SYMBOL_GPL(kvm_lapic_reset);
-int kvm_lapic_enabled(struct kvm_vcpu *vcpu)
+bool kvm_apic_present(struct kvm_vcpu *vcpu)
{
- struct kvm_lapic *apic = vcpu->arch.apic;
- int ret = 0;
-
- if (!apic)
- return 0;
- ret = apic_enabled(apic);
+ return vcpu->arch.apic && apic_hw_enabled(vcpu->arch.apic);
+}
- return ret;
+int kvm_lapic_enabled(struct kvm_vcpu *vcpu)
+{
+ return kvm_apic_present(vcpu) && apic_sw_enabled(vcpu->arch.apic);
}
EXPORT_SYMBOL_GPL(kvm_lapic_enabled);
@@ -936,22 +874,11 @@ EXPORT_SYMBOL_GPL(kvm_lapic_enabled);
*----------------------------------------------------------------------
*/
-/* TODO: make sure __apic_timer_fn runs in current pCPU */
-static int __apic_timer_fn(struct kvm_lapic *apic)
+static bool lapic_is_periodic(struct kvm_timer *ktimer)
{
- int result = 0;
- wait_queue_head_t *q = &apic->vcpu->wq;
-
- if(!atomic_inc_and_test(&apic->timer.pending))
- set_bit(KVM_REQ_PENDING_TIMER, &apic->vcpu->requests);
- if (waitqueue_active(q))
- wake_up_interruptible(q);
-
- if (apic_lvtt_period(apic)) {
- result = 1;
- hrtimer_add_expires_ns(&apic->timer.dev, apic->timer.period);
- }
- return result;
+ struct kvm_lapic *apic = container_of(ktimer, struct kvm_lapic,
+ lapic_timer);
+ return apic_lvtt_period(apic);
}
int apic_has_pending_timer(struct kvm_vcpu *vcpu)
@@ -959,7 +886,7 @@ int apic_has_pending_timer(struct kvm_vcpu *vcpu)
struct kvm_lapic *lapic = vcpu->arch.apic;
if (lapic && apic_enabled(lapic) && apic_lvt_enabled(lapic, APIC_LVTT))
- return atomic_read(&lapic->timer.pending);
+ return atomic_read(&lapic->lapic_timer.pending);
return 0;
}
@@ -986,20 +913,9 @@ void kvm_apic_nmi_wd_deliver(struct kvm_vcpu *vcpu)
kvm_apic_local_deliver(apic, APIC_LVT0);
}
-static enum hrtimer_restart apic_timer_fn(struct hrtimer *data)
-{
- struct kvm_lapic *apic;
- int restart_timer = 0;
-
- apic = container_of(data, struct kvm_lapic, timer.dev);
-
- restart_timer = __apic_timer_fn(apic);
-
- if (restart_timer)
- return HRTIMER_RESTART;
- else
- return HRTIMER_NORESTART;
-}
+static struct kvm_timer_ops lapic_timer_ops = {
+ .is_periodic = lapic_is_periodic,
+};
int kvm_create_lapic(struct kvm_vcpu *vcpu)
{
@@ -1024,8 +940,13 @@ int kvm_create_lapic(struct kvm_vcpu *vcpu)
memset(apic->regs, 0, PAGE_SIZE);
apic->vcpu = vcpu;
- hrtimer_init(&apic->timer.dev, CLOCK_MONOTONIC, HRTIMER_MODE_ABS);
- apic->timer.dev.function = apic_timer_fn;
+ hrtimer_init(&apic->lapic_timer.timer, CLOCK_MONOTONIC,
+ HRTIMER_MODE_ABS);
+ apic->lapic_timer.timer.function = kvm_timer_fn;
+ apic->lapic_timer.t_ops = &lapic_timer_ops;
+ apic->lapic_timer.kvm = vcpu->kvm;
+ apic->lapic_timer.vcpu_id = vcpu->vcpu_id;
+
apic->base_address = APIC_DEFAULT_PHYS_BASE;
vcpu->arch.apic_base = APIC_DEFAULT_PHYS_BASE;
@@ -1078,9 +999,9 @@ void kvm_inject_apic_timer_irqs(struct kvm_vcpu *vcpu)
{
struct kvm_lapic *apic = vcpu->arch.apic;
- if (apic && atomic_read(&apic->timer.pending) > 0) {
+ if (apic && atomic_read(&apic->lapic_timer.pending) > 0) {
if (kvm_apic_local_deliver(apic, APIC_LVTT))
- atomic_dec(&apic->timer.pending);
+ atomic_dec(&apic->lapic_timer.pending);
}
}
@@ -1106,7 +1027,7 @@ void kvm_apic_post_state_restore(struct kvm_vcpu *vcpu)
MSR_IA32_APICBASE_BASE;
apic_set_reg(apic, APIC_LVR, APIC_VERSION);
apic_update_ppr(apic);
- hrtimer_cancel(&apic->timer.dev);
+ hrtimer_cancel(&apic->lapic_timer.timer);
update_divide_count(apic);
start_apic_timer(apic);
}
@@ -1119,7 +1040,7 @@ void __kvm_migrate_apic_timer(struct kvm_vcpu *vcpu)
if (!apic)
return;
- timer = &apic->timer.dev;
+ timer = &apic->lapic_timer.timer;
if (hrtimer_cancel(timer))
hrtimer_start_expires(timer, HRTIMER_MODE_ABS);
}
diff --git a/arch/x86/kvm/lapic.h b/arch/x86/kvm/lapic.h
index 45ab6ee..a587f83 100644
--- a/arch/x86/kvm/lapic.h
+++ b/arch/x86/kvm/lapic.h
@@ -2,18 +2,15 @@
#define __KVM_X86_LAPIC_H
#include "iodev.h"
+#include "kvm_timer.h"
#include <linux/kvm_host.h>
struct kvm_lapic {
unsigned long base_address;
struct kvm_io_device dev;
- struct {
- atomic_t pending;
- s64 period; /* unit: ns */
- u32 divide_count;
- struct hrtimer dev;
- } timer;
+ struct kvm_timer lapic_timer;
+ u32 divide_count;
struct kvm_vcpu *vcpu;
struct page *regs_page;
void *regs;
@@ -34,12 +31,13 @@ u64 kvm_lapic_get_base(struct kvm_vcpu *vcpu);
int kvm_apic_match_physical_addr(struct kvm_lapic *apic, u16 dest);
int kvm_apic_match_logical_addr(struct kvm_lapic *apic, u8 mda);
-int kvm_apic_set_irq(struct kvm_vcpu *vcpu, u8 vec, u8 trig);
+int kvm_apic_set_irq(struct kvm_vcpu *vcpu, struct kvm_lapic_irq *irq);
u64 kvm_get_apic_base(struct kvm_vcpu *vcpu);
void kvm_set_apic_base(struct kvm_vcpu *vcpu, u64 data);
void kvm_apic_post_state_restore(struct kvm_vcpu *vcpu);
int kvm_lapic_enabled(struct kvm_vcpu *vcpu);
+bool kvm_apic_present(struct kvm_vcpu *vcpu);
int kvm_lapic_find_highest_irr(struct kvm_vcpu *vcpu);
void kvm_lapic_set_vapic_addr(struct kvm_vcpu *vcpu, gpa_t vapic_addr);
diff --git a/arch/x86/kvm/mmu.c b/arch/x86/kvm/mmu.c
index 32cf11e..5c3d6e8 100644
--- a/arch/x86/kvm/mmu.c
+++ b/arch/x86/kvm/mmu.c
@@ -126,6 +126,7 @@ module_param(oos_shadow, bool, 0644);
#define PFERR_PRESENT_MASK (1U << 0)
#define PFERR_WRITE_MASK (1U << 1)
#define PFERR_USER_MASK (1U << 2)
+#define PFERR_RSVD_MASK (1U << 3)
#define PFERR_FETCH_MASK (1U << 4)
#define PT_DIRECTORY_LEVEL 2
@@ -177,7 +178,11 @@ static u64 __read_mostly shadow_x_mask; /* mutual exclusive with nx_mask */
static u64 __read_mostly shadow_user_mask;
static u64 __read_mostly shadow_accessed_mask;
static u64 __read_mostly shadow_dirty_mask;
-static u64 __read_mostly shadow_mt_mask;
+
+static inline u64 rsvd_bits(int s, int e)
+{
+ return ((1ULL << (e - s + 1)) - 1) << s;
+}
void kvm_mmu_set_nonpresent_ptes(u64 trap_pte, u64 notrap_pte)
{
@@ -193,14 +198,13 @@ void kvm_mmu_set_base_ptes(u64 base_pte)
EXPORT_SYMBOL_GPL(kvm_mmu_set_base_ptes);
void kvm_mmu_set_mask_ptes(u64 user_mask, u64 accessed_mask,
- u64 dirty_mask, u64 nx_mask, u64 x_mask, u64 mt_mask)
+ u64 dirty_mask, u64 nx_mask, u64 x_mask)
{
shadow_user_mask = user_mask;
shadow_accessed_mask = accessed_mask;
shadow_dirty_mask = dirty_mask;
shadow_nx_mask = nx_mask;
shadow_x_mask = x_mask;
- shadow_mt_mask = mt_mask;
}
EXPORT_SYMBOL_GPL(kvm_mmu_set_mask_ptes);
@@ -219,11 +223,6 @@ static int is_nx(struct kvm_vcpu *vcpu)
return vcpu->arch.shadow_efer & EFER_NX;
}
-static int is_present_pte(unsigned long pte)
-{
- return pte & PT_PRESENT_MASK;
-}
-
static int is_shadow_present_pte(u64 pte)
{
return pte != shadow_trap_nonpresent_pte
@@ -1074,18 +1073,10 @@ static struct kvm_mmu_page *kvm_mmu_lookup_page(struct kvm *kvm, gfn_t gfn)
return NULL;
}
-static void kvm_unlink_unsync_global(struct kvm *kvm, struct kvm_mmu_page *sp)
-{
- list_del(&sp->oos_link);
- --kvm->stat.mmu_unsync_global;
-}
-
static void kvm_unlink_unsync_page(struct kvm *kvm, struct kvm_mmu_page *sp)
{
WARN_ON(!sp->unsync);
sp->unsync = 0;
- if (sp->global)
- kvm_unlink_unsync_global(kvm, sp);
--kvm->stat.mmu_unsync;
}
@@ -1248,7 +1239,6 @@ static struct kvm_mmu_page *kvm_mmu_get_page(struct kvm_vcpu *vcpu,
pgprintk("%s: adding gfn %lx role %x\n", __func__, gfn, role.word);
sp->gfn = gfn;
sp->role = role;
- sp->global = 0;
hlist_add_head(&sp->hash_link, bucket);
if (!direct) {
if (rmap_write_protect(vcpu->kvm, gfn))
@@ -1616,7 +1606,7 @@ static int get_mtrr_type(struct mtrr_state_type *mtrr_state,
return mtrr_state->def_type;
}
-static u8 get_memory_type(struct kvm_vcpu *vcpu, gfn_t gfn)
+u8 kvm_get_guest_memory_type(struct kvm_vcpu *vcpu, gfn_t gfn)
{
u8 mtrr;
@@ -1626,6 +1616,7 @@ static u8 get_memory_type(struct kvm_vcpu *vcpu, gfn_t gfn)
mtrr = MTRR_TYPE_WRBACK;
return mtrr;
}
+EXPORT_SYMBOL_GPL(kvm_get_guest_memory_type);
static int kvm_unsync_page(struct kvm_vcpu *vcpu, struct kvm_mmu_page *sp)
{
@@ -1646,11 +1637,7 @@ static int kvm_unsync_page(struct kvm_vcpu *vcpu, struct kvm_mmu_page *sp)
++vcpu->kvm->stat.mmu_unsync;
sp->unsync = 1;
- if (sp->global) {
- list_add(&sp->oos_link, &vcpu->kvm->arch.oos_global_pages);
- ++vcpu->kvm->stat.mmu_unsync_global;
- } else
- kvm_mmu_mark_parents_unsync(vcpu, sp);
+ kvm_mmu_mark_parents_unsync(vcpu, sp);
mmu_convert_notrap(sp);
return 0;
@@ -1677,21 +1664,11 @@ static int mmu_need_write_protect(struct kvm_vcpu *vcpu, gfn_t gfn,
static int set_spte(struct kvm_vcpu *vcpu, u64 *shadow_pte,
unsigned pte_access, int user_fault,
int write_fault, int dirty, int largepage,
- int global, gfn_t gfn, pfn_t pfn, bool speculative,
+ gfn_t gfn, pfn_t pfn, bool speculative,
bool can_unsync)
{
u64 spte;
int ret = 0;
- u64 mt_mask = shadow_mt_mask;
- struct kvm_mmu_page *sp = page_header(__pa(shadow_pte));
-
- if (!global && sp->global) {
- sp->global = 0;
- if (sp->unsync) {
- kvm_unlink_unsync_global(vcpu->kvm, sp);
- kvm_mmu_mark_parents_unsync(vcpu, sp);
- }
- }
/*
* We don't set the accessed bit, since we sometimes want to see
@@ -1711,16 +1688,9 @@ static int set_spte(struct kvm_vcpu *vcpu, u64 *shadow_pte,
spte |= shadow_user_mask;
if (largepage)
spte |= PT_PAGE_SIZE_MASK;
- if (mt_mask) {
- if (!kvm_is_mmio_pfn(pfn)) {
- mt_mask = get_memory_type(vcpu, gfn) <<
- kvm_x86_ops->get_mt_mask_shift();
- mt_mask |= VMX_EPT_IGMT_BIT;
- } else
- mt_mask = MTRR_TYPE_UNCACHABLE <<
- kvm_x86_ops->get_mt_mask_shift();
- spte |= mt_mask;
- }
+ if (tdp_enabled)
+ spte |= kvm_x86_ops->get_mt_mask(vcpu, gfn,
+ kvm_is_mmio_pfn(pfn));
spte |= (u64)pfn << PAGE_SHIFT;
@@ -1765,8 +1735,8 @@ set_pte:
static void mmu_set_spte(struct kvm_vcpu *vcpu, u64 *shadow_pte,
unsigned pt_access, unsigned pte_access,
int user_fault, int write_fault, int dirty,
- int *ptwrite, int largepage, int global,
- gfn_t gfn, pfn_t pfn, bool speculative)
+ int *ptwrite, int largepage, gfn_t gfn,
+ pfn_t pfn, bool speculative)
{
int was_rmapped = 0;
int was_writeble = is_writeble_pte(*shadow_pte);
@@ -1795,7 +1765,7 @@ static void mmu_set_spte(struct kvm_vcpu *vcpu, u64 *shadow_pte,
was_rmapped = 1;
}
if (set_spte(vcpu, shadow_pte, pte_access, user_fault, write_fault,
- dirty, largepage, global, gfn, pfn, speculative, true)) {
+ dirty, largepage, gfn, pfn, speculative, true)) {
if (write_fault)
*ptwrite = 1;
kvm_x86_ops->tlb_flush(vcpu);
@@ -1843,7 +1813,7 @@ static int __direct_map(struct kvm_vcpu *vcpu, gpa_t v, int write,
|| (largepage && iterator.level == PT_DIRECTORY_LEVEL)) {
mmu_set_spte(vcpu, iterator.sptep, ACC_ALL, ACC_ALL,
0, write, 1, &pt_write,
- largepage, 0, gfn, pfn, false);
+ largepage, gfn, pfn, false);
++vcpu->stat.pf_fixed;
break;
}
@@ -1942,7 +1912,19 @@ static void mmu_free_roots(struct kvm_vcpu *vcpu)
vcpu->arch.mmu.root_hpa = INVALID_PAGE;
}
-static void mmu_alloc_roots(struct kvm_vcpu *vcpu)
+static int mmu_check_root(struct kvm_vcpu *vcpu, gfn_t root_gfn)
+{
+ int ret = 0;
+
+ if (!kvm_is_visible_gfn(vcpu->kvm, root_gfn)) {
+ set_bit(KVM_REQ_TRIPLE_FAULT, &vcpu->requests);
+ ret = 1;
+ }
+
+ return ret;
+}
+
+static int mmu_alloc_roots(struct kvm_vcpu *vcpu)
{
int i;
gfn_t root_gfn;
@@ -1957,13 +1939,15 @@ static void mmu_alloc_roots(struct kvm_vcpu *vcpu)
ASSERT(!VALID_PAGE(root));
if (tdp_enabled)
direct = 1;
+ if (mmu_check_root(vcpu, root_gfn))
+ return 1;
sp = kvm_mmu_get_page(vcpu, root_gfn, 0,
PT64_ROOT_LEVEL, direct,
ACC_ALL, NULL);
root = __pa(sp->spt);
++sp->root_count;
vcpu->arch.mmu.root_hpa = root;
- return;
+ return 0;
}
direct = !is_paging(vcpu);
if (tdp_enabled)
@@ -1980,6 +1964,8 @@ static void mmu_alloc_roots(struct kvm_vcpu *vcpu)
root_gfn = vcpu->arch.pdptrs[i] >> PAGE_SHIFT;
} else if (vcpu->arch.mmu.root_level == 0)
root_gfn = 0;
+ if (mmu_check_root(vcpu, root_gfn))
+ return 1;
sp = kvm_mmu_get_page(vcpu, root_gfn, i << 30,
PT32_ROOT_LEVEL, direct,
ACC_ALL, NULL);
@@ -1988,6 +1974,7 @@ static void mmu_alloc_roots(struct kvm_vcpu *vcpu)
vcpu->arch.mmu.pae_root[i] = root | PT_PRESENT_MASK;
}
vcpu->arch.mmu.root_hpa = __pa(vcpu->arch.mmu.pae_root);
+ return 0;
}
static void mmu_sync_roots(struct kvm_vcpu *vcpu)
@@ -2006,7 +1993,7 @@ static void mmu_sync_roots(struct kvm_vcpu *vcpu)
for (i = 0; i < 4; ++i) {
hpa_t root = vcpu->arch.mmu.pae_root[i];
- if (root) {
+ if (root && VALID_PAGE(root)) {
root &= PT64_BASE_ADDR_MASK;
sp = page_header(root);
mmu_sync_children(vcpu, sp);
@@ -2014,15 +2001,6 @@ static void mmu_sync_roots(struct kvm_vcpu *vcpu)
}
}
-static void mmu_sync_global(struct kvm_vcpu *vcpu)
-{
- struct kvm *kvm = vcpu->kvm;
- struct kvm_mmu_page *sp, *n;
-
- list_for_each_entry_safe(sp, n, &kvm->arch.oos_global_pages, oos_link)
- kvm_sync_page(vcpu, sp);
-}
-
void kvm_mmu_sync_roots(struct kvm_vcpu *vcpu)
{
spin_lock(&vcpu->kvm->mmu_lock);
@@ -2030,13 +2008,6 @@ void kvm_mmu_sync_roots(struct kvm_vcpu *vcpu)
spin_unlock(&vcpu->kvm->mmu_lock);
}
-void kvm_mmu_sync_global(struct kvm_vcpu *vcpu)
-{
- spin_lock(&vcpu->kvm->mmu_lock);
- mmu_sync_global(vcpu);
- spin_unlock(&vcpu->kvm->mmu_lock);
-}
-
static gpa_t nonpaging_gva_to_gpa(struct kvm_vcpu *vcpu, gva_t vaddr)
{
return vaddr;
@@ -2151,6 +2122,14 @@ static void paging_free(struct kvm_vcpu *vcpu)
nonpaging_free(vcpu);
}
+static bool is_rsvd_bits_set(struct kvm_vcpu *vcpu, u64 gpte, int level)
+{
+ int bit7;
+
+ bit7 = (gpte >> 7) & 1;
+ return (gpte & vcpu->arch.mmu.rsvd_bits_mask[bit7][level-1]) != 0;
+}
+
#define PTTYPE 64
#include "paging_tmpl.h"
#undef PTTYPE
@@ -2159,6 +2138,59 @@ static void paging_free(struct kvm_vcpu *vcpu)
#include "paging_tmpl.h"
#undef PTTYPE
+static void reset_rsvds_bits_mask(struct kvm_vcpu *vcpu, int level)
+{
+ struct kvm_mmu *context = &vcpu->arch.mmu;
+ int maxphyaddr = cpuid_maxphyaddr(vcpu);
+ u64 exb_bit_rsvd = 0;
+
+ if (!is_nx(vcpu))
+ exb_bit_rsvd = rsvd_bits(63, 63);
+ switch (level) {
+ case PT32_ROOT_LEVEL:
+ /* no rsvd bits for 2 level 4K page table entries */
+ context->rsvd_bits_mask[0][1] = 0;
+ context->rsvd_bits_mask[0][0] = 0;
+ if (is_cpuid_PSE36())
+ /* 36bits PSE 4MB page */
+ context->rsvd_bits_mask[1][1] = rsvd_bits(17, 21);
+ else
+ /* 32 bits PSE 4MB page */
+ context->rsvd_bits_mask[1][1] = rsvd_bits(13, 21);
+ context->rsvd_bits_mask[1][0] = ~0ull;
+ break;
+ case PT32E_ROOT_LEVEL:
+ context->rsvd_bits_mask[0][2] =
+ rsvd_bits(maxphyaddr, 63) |
+ rsvd_bits(7, 8) | rsvd_bits(1, 2); /* PDPTE */
+ context->rsvd_bits_mask[0][1] = exb_bit_rsvd |
+ rsvd_bits(maxphyaddr, 62); /* PDE */
+ context->rsvd_bits_mask[0][0] = exb_bit_rsvd |
+ rsvd_bits(maxphyaddr, 62); /* PTE */
+ context->rsvd_bits_mask[1][1] = exb_bit_rsvd |
+ rsvd_bits(maxphyaddr, 62) |
+ rsvd_bits(13, 20); /* large page */
+ context->rsvd_bits_mask[1][0] = ~0ull;
+ break;
+ case PT64_ROOT_LEVEL:
+ context->rsvd_bits_mask[0][3] = exb_bit_rsvd |
+ rsvd_bits(maxphyaddr, 51) | rsvd_bits(7, 8);
+ context->rsvd_bits_mask[0][2] = exb_bit_rsvd |
+ rsvd_bits(maxphyaddr, 51) | rsvd_bits(7, 8);
+ context->rsvd_bits_mask[0][1] = exb_bit_rsvd |
+ rsvd_bits(maxphyaddr, 51);
+ context->rsvd_bits_mask[0][0] = exb_bit_rsvd |
+ rsvd_bits(maxphyaddr, 51);
+ context->rsvd_bits_mask[1][3] = context->rsvd_bits_mask[0][3];
+ context->rsvd_bits_mask[1][2] = context->rsvd_bits_mask[0][2];
+ context->rsvd_bits_mask[1][1] = exb_bit_rsvd |
+ rsvd_bits(maxphyaddr, 51) |
+ rsvd_bits(13, 20); /* large page */
+ context->rsvd_bits_mask[1][0] = ~0ull;
+ break;
+ }
+}
+
static int paging64_init_context_common(struct kvm_vcpu *vcpu, int level)
{
struct kvm_mmu *context = &vcpu->arch.mmu;
@@ -2179,6 +2211,7 @@ static int paging64_init_context_common(struct kvm_vcpu *vcpu, int level)
static int paging64_init_context(struct kvm_vcpu *vcpu)
{
+ reset_rsvds_bits_mask(vcpu, PT64_ROOT_LEVEL);
return paging64_init_context_common(vcpu, PT64_ROOT_LEVEL);
}
@@ -2186,6 +2219,7 @@ static int paging32_init_context(struct kvm_vcpu *vcpu)
{
struct kvm_mmu *context = &vcpu->arch.mmu;
+ reset_rsvds_bits_mask(vcpu, PT32_ROOT_LEVEL);
context->new_cr3 = paging_new_cr3;
context->page_fault = paging32_page_fault;
context->gva_to_gpa = paging32_gva_to_gpa;
@@ -2201,6 +2235,7 @@ static int paging32_init_context(struct kvm_vcpu *vcpu)
static int paging32E_init_context(struct kvm_vcpu *vcpu)
{
+ reset_rsvds_bits_mask(vcpu, PT32E_ROOT_LEVEL);
return paging64_init_context_common(vcpu, PT32E_ROOT_LEVEL);
}
@@ -2221,12 +2256,15 @@ static int init_kvm_tdp_mmu(struct kvm_vcpu *vcpu)
context->gva_to_gpa = nonpaging_gva_to_gpa;
context->root_level = 0;
} else if (is_long_mode(vcpu)) {
+ reset_rsvds_bits_mask(vcpu, PT64_ROOT_LEVEL);
context->gva_to_gpa = paging64_gva_to_gpa;
context->root_level = PT64_ROOT_LEVEL;
} else if (is_pae(vcpu)) {
+ reset_rsvds_bits_mask(vcpu, PT32E_ROOT_LEVEL);
context->gva_to_gpa = paging64_gva_to_gpa;
context->root_level = PT32E_ROOT_LEVEL;
} else {
+ reset_rsvds_bits_mask(vcpu, PT32_ROOT_LEVEL);
context->gva_to_gpa = paging32_gva_to_gpa;
context->root_level = PT32_ROOT_LEVEL;
}
@@ -2290,9 +2328,11 @@ int kvm_mmu_load(struct kvm_vcpu *vcpu)
goto out;
spin_lock(&vcpu->kvm->mmu_lock);
kvm_mmu_free_some_pages(vcpu);
- mmu_alloc_roots(vcpu);
+ r = mmu_alloc_roots(vcpu);
mmu_sync_roots(vcpu);
spin_unlock(&vcpu->kvm->mmu_lock);
+ if (r)
+ goto out;
kvm_x86_ops->set_cr3(vcpu, vcpu->arch.mmu.root_hpa);
kvm_mmu_flush_tlb(vcpu);
out:
@@ -2638,14 +2678,6 @@ EXPORT_SYMBOL_GPL(kvm_disable_tdp);
static void free_mmu_pages(struct kvm_vcpu *vcpu)
{
- struct kvm_mmu_page *sp;
-
- while (!list_empty(&vcpu->kvm->arch.active_mmu_pages)) {
- sp = container_of(vcpu->kvm->arch.active_mmu_pages.next,
- struct kvm_mmu_page, link);
- kvm_mmu_zap_page(vcpu->kvm, sp);
- cond_resched();
- }
free_page((unsigned long)vcpu->arch.mmu.pae_root);
}
@@ -2710,7 +2742,6 @@ void kvm_mmu_slot_remove_write_access(struct kvm *kvm, int slot)
{
struct kvm_mmu_page *sp;
- spin_lock(&kvm->mmu_lock);
list_for_each_entry(sp, &kvm->arch.active_mmu_pages, link) {
int i;
u64 *pt;
@@ -2725,7 +2756,6 @@ void kvm_mmu_slot_remove_write_access(struct kvm *kvm, int slot)
pt[i] &= ~PT_WRITABLE_MASK;
}
kvm_flush_remote_tlbs(kvm);
- spin_unlock(&kvm->mmu_lock);
}
void kvm_mmu_zap_all(struct kvm *kvm)
@@ -3007,11 +3037,13 @@ static void audit_mappings_page(struct kvm_vcpu *vcpu, u64 page_pte,
" in nonleaf level: levels %d gva %lx"
" level %d pte %llx\n", audit_msg,
vcpu->arch.mmu.root_level, va, level, ent);
-
- audit_mappings_page(vcpu, ent, va, level - 1);
+ else
+ audit_mappings_page(vcpu, ent, va, level - 1);
} else {
gpa_t gpa = vcpu->arch.mmu.gva_to_gpa(vcpu, va);
- hpa_t hpa = (hpa_t)gpa_to_pfn(vcpu, gpa) << PAGE_SHIFT;
+ gfn_t gfn = gpa >> PAGE_SHIFT;
+ pfn_t pfn = gfn_to_pfn(vcpu->kvm, gfn);
+ hpa_t hpa = (hpa_t)pfn << PAGE_SHIFT;
if (is_shadow_present_pte(ent)
&& (ent & PT64_BASE_ADDR_MASK) != hpa)
diff --git a/arch/x86/kvm/mmu.h b/arch/x86/kvm/mmu.h
index eaab214..3494a2f 100644
--- a/arch/x86/kvm/mmu.h
+++ b/arch/x86/kvm/mmu.h
@@ -75,4 +75,9 @@ static inline int is_paging(struct kvm_vcpu *vcpu)
return vcpu->arch.cr0 & X86_CR0_PG;
}
+static inline int is_present_pte(unsigned long pte)
+{
+ return pte & PT_PRESENT_MASK;
+}
+
#endif
diff --git a/arch/x86/kvm/paging_tmpl.h b/arch/x86/kvm/paging_tmpl.h
index 6bd7020..258e459 100644
--- a/arch/x86/kvm/paging_tmpl.h
+++ b/arch/x86/kvm/paging_tmpl.h
@@ -123,6 +123,7 @@ static int FNAME(walk_addr)(struct guest_walker *walker,
gfn_t table_gfn;
unsigned index, pt_access, pte_access;
gpa_t pte_gpa;
+ int rsvd_fault = 0;
pgprintk("%s: addr %lx\n", __func__, addr);
walk:
@@ -157,6 +158,10 @@ walk:
if (!is_present_pte(pte))
goto not_present;
+ rsvd_fault = is_rsvd_bits_set(vcpu, pte, walker->level);
+ if (rsvd_fault)
+ goto access_error;
+
if (write_fault && !is_writeble_pte(pte))
if (user_fault || is_write_protection(vcpu))
goto access_error;
@@ -209,7 +214,6 @@ walk:
if (ret)
goto walk;
pte |= PT_DIRTY_MASK;
- kvm_mmu_pte_write(vcpu, pte_gpa, (u8 *)&pte, sizeof(pte), 0);
walker->ptes[walker->level - 1] = pte;
}
@@ -233,6 +237,8 @@ err:
walker->error_code |= PFERR_USER_MASK;
if (fetch_fault)
walker->error_code |= PFERR_FETCH_MASK;
+ if (rsvd_fault)
+ walker->error_code |= PFERR_RSVD_MASK;
return 0;
}
@@ -262,8 +268,7 @@ static void FNAME(update_pte)(struct kvm_vcpu *vcpu, struct kvm_mmu_page *page,
kvm_get_pfn(pfn);
mmu_set_spte(vcpu, spte, page->role.access, pte_access, 0, 0,
gpte & PT_DIRTY_MASK, NULL, largepage,
- gpte & PT_GLOBAL_MASK, gpte_to_gfn(gpte),
- pfn, true);
+ gpte_to_gfn(gpte), pfn, true);
}
/*
@@ -297,7 +302,6 @@ static u64 *FNAME(fetch)(struct kvm_vcpu *vcpu, gva_t addr,
user_fault, write_fault,
gw->ptes[gw->level-1] & PT_DIRTY_MASK,
ptwrite, largepage,
- gw->ptes[gw->level-1] & PT_GLOBAL_MASK,
gw->gfn, pfn, false);
break;
}
@@ -380,7 +384,7 @@ static int FNAME(page_fault)(struct kvm_vcpu *vcpu, gva_t addr,
return r;
/*
- * Look up the shadow pte for the faulting address.
+ * Look up the guest pte for the faulting address.
*/
r = FNAME(walk_addr)(&walker, vcpu, addr, write_fault, user_fault,
fetch_fault);
@@ -586,7 +590,7 @@ static int FNAME(sync_page)(struct kvm_vcpu *vcpu, struct kvm_mmu_page *sp)
nr_present++;
pte_access = sp->role.access & FNAME(gpte_access)(vcpu, gpte);
set_spte(vcpu, &sp->spt[i], pte_access, 0, 0,
- is_dirty_pte(gpte), 0, gpte & PT_GLOBAL_MASK, gfn,
+ is_dirty_pte(gpte), 0, gfn,
spte_to_pfn(sp->spt[i]), true, false);
}
diff --git a/arch/x86/kvm/svm.c b/arch/x86/kvm/svm.c
index 1f8510c..71510e0 100644
--- a/arch/x86/kvm/svm.c
+++ b/arch/x86/kvm/svm.c
@@ -19,6 +19,7 @@
#include "irq.h"
#include "mmu.h"
#include "kvm_cache_regs.h"
+#include "x86.h"
#include <linux/module.h>
#include <linux/kernel.h>
@@ -69,7 +70,6 @@ module_param(npt, int, S_IRUGO);
static int nested = 0;
module_param(nested, int, S_IRUGO);
-static void kvm_reput_irq(struct vcpu_svm *svm);
static void svm_flush_tlb(struct kvm_vcpu *vcpu);
static int nested_svm_exit_handled(struct vcpu_svm *svm, bool kvm_override);
@@ -132,24 +132,6 @@ static inline u32 svm_has(u32 feat)
return svm_features & feat;
}
-static inline u8 pop_irq(struct kvm_vcpu *vcpu)
-{
- int word_index = __ffs(vcpu->arch.irq_summary);
- int bit_index = __ffs(vcpu->arch.irq_pending[word_index]);
- int irq = word_index * BITS_PER_LONG + bit_index;
-
- clear_bit(bit_index, &vcpu->arch.irq_pending[word_index]);
- if (!vcpu->arch.irq_pending[word_index])
- clear_bit(word_index, &vcpu->arch.irq_summary);
- return irq;
-}
-
-static inline void push_irq(struct kvm_vcpu *vcpu, u8 irq)
-{
- set_bit(irq, vcpu->arch.irq_pending);
- set_bit(irq / BITS_PER_LONG, &vcpu->arch.irq_summary);
-}
-
static inline void clgi(void)
{
asm volatile (__ex(SVM_CLGI));
@@ -214,17 +196,31 @@ static void svm_queue_exception(struct kvm_vcpu *vcpu, unsigned nr,
svm->vmcb->control.event_inj_err = error_code;
}
-static bool svm_exception_injected(struct kvm_vcpu *vcpu)
+static int is_external_interrupt(u32 info)
+{
+ info &= SVM_EVTINJ_TYPE_MASK | SVM_EVTINJ_VALID;
+ return info == (SVM_EVTINJ_VALID | SVM_EVTINJ_TYPE_INTR);
+}
+
+static u32 svm_get_interrupt_shadow(struct kvm_vcpu *vcpu, int mask)
{
struct vcpu_svm *svm = to_svm(vcpu);
+ u32 ret = 0;
- return !(svm->vmcb->control.exit_int_info & SVM_EXITINTINFO_VALID);
+ if (svm->vmcb->control.int_state & SVM_INTERRUPT_SHADOW_MASK)
+ ret |= X86_SHADOW_INT_STI | X86_SHADOW_INT_MOV_SS;
+ return ret & mask;
}
-static int is_external_interrupt(u32 info)
+static void svm_set_interrupt_shadow(struct kvm_vcpu *vcpu, int mask)
{
- info &= SVM_EVTINJ_TYPE_MASK | SVM_EVTINJ_VALID;
- return info == (SVM_EVTINJ_VALID | SVM_EVTINJ_TYPE_INTR);
+ struct vcpu_svm *svm = to_svm(vcpu);
+
+ if (mask == 0)
+ svm->vmcb->control.int_state &= ~SVM_INTERRUPT_SHADOW_MASK;
+ else
+ svm->vmcb->control.int_state |= SVM_INTERRUPT_SHADOW_MASK;
+
}
static void skip_emulated_instruction(struct kvm_vcpu *vcpu)
@@ -232,7 +228,9 @@ static void skip_emulated_instruction(struct kvm_vcpu *vcpu)
struct vcpu_svm *svm = to_svm(vcpu);
if (!svm->next_rip) {
- printk(KERN_DEBUG "%s: NOP\n", __func__);
+ if (emulate_instruction(vcpu, vcpu->run, 0, 0, EMULTYPE_SKIP) !=
+ EMULATE_DONE)
+ printk(KERN_DEBUG "%s: NOP\n", __func__);
return;
}
if (svm->next_rip - kvm_rip_read(vcpu) > MAX_INST_SIZE)
@@ -240,9 +238,7 @@ static void skip_emulated_instruction(struct kvm_vcpu *vcpu)
__func__, kvm_rip_read(vcpu), svm->next_rip);
kvm_rip_write(vcpu, svm->next_rip);
- svm->vmcb->control.int_state &= ~SVM_INTERRUPT_SHADOW_MASK;
-
- vcpu->arch.interrupt_window_open = (svm->vcpu.arch.hflags & HF_GIF_MASK);
+ svm_set_interrupt_shadow(vcpu, 0);
}
static int has_svm(void)
@@ -830,6 +826,15 @@ static void svm_get_segment(struct kvm_vcpu *vcpu,
if (!var->unusable)
var->type |= 0x1;
break;
+ case VCPU_SREG_SS:
+ /* On AMD CPUs sometimes the DB bit in the segment
+ * descriptor is left as 1, although the whole segment has
+ * been made unusable. Clear it here to pass an Intel VMX
+ * entry check when cross vendor migrating.
+ */
+ if (var->unusable)
+ var->db = 0;
+ break;
}
}
@@ -960,15 +965,16 @@ static void svm_set_segment(struct kvm_vcpu *vcpu,
}
-static int svm_guest_debug(struct kvm_vcpu *vcpu, struct kvm_guest_debug *dbg)
+static void update_db_intercept(struct kvm_vcpu *vcpu)
{
- int old_debug = vcpu->guest_debug;
struct vcpu_svm *svm = to_svm(vcpu);
- vcpu->guest_debug = dbg->control;
-
svm->vmcb->control.intercept_exceptions &=
~((1 << DB_VECTOR) | (1 << BP_VECTOR));
+
+ if (vcpu->arch.singlestep)
+ svm->vmcb->control.intercept_exceptions |= (1 << DB_VECTOR);
+
if (vcpu->guest_debug & KVM_GUESTDBG_ENABLE) {
if (vcpu->guest_debug &
(KVM_GUESTDBG_SINGLESTEP | KVM_GUESTDBG_USE_HW_BP))
@@ -979,6 +985,16 @@ static int svm_guest_debug(struct kvm_vcpu *vcpu, struct kvm_guest_debug *dbg)
1 << BP_VECTOR;
} else
vcpu->guest_debug = 0;
+}
+
+static int svm_guest_debug(struct kvm_vcpu *vcpu, struct kvm_guest_debug *dbg)
+{
+ int old_debug = vcpu->guest_debug;
+ struct vcpu_svm *svm = to_svm(vcpu);
+
+ vcpu->guest_debug = dbg->control;
+
+ update_db_intercept(vcpu);
if (vcpu->guest_debug & KVM_GUESTDBG_USE_HW_BP)
svm->vmcb->save.dr7 = dbg->arch.debugreg[7];
@@ -993,16 +1009,6 @@ static int svm_guest_debug(struct kvm_vcpu *vcpu, struct kvm_guest_debug *dbg)
return 0;
}
-static int svm_get_irq(struct kvm_vcpu *vcpu)
-{
- struct vcpu_svm *svm = to_svm(vcpu);
- u32 exit_int_info = svm->vmcb->control.exit_int_info;
-
- if (is_external_interrupt(exit_int_info))
- return exit_int_info & SVM_EVTINJ_VEC_MASK;
- return -1;
-}
-
static void load_host_msrs(struct kvm_vcpu *vcpu)
{
#ifdef CONFIG_X86_64
@@ -1107,17 +1113,8 @@ static void svm_set_dr(struct kvm_vcpu *vcpu, int dr, unsigned long value,
static int pf_interception(struct vcpu_svm *svm, struct kvm_run *kvm_run)
{
- u32 exit_int_info = svm->vmcb->control.exit_int_info;
- struct kvm *kvm = svm->vcpu.kvm;
u64 fault_address;
u32 error_code;
- bool event_injection = false;
-
- if (!irqchip_in_kernel(kvm) &&
- is_external_interrupt(exit_int_info)) {
- event_injection = true;
- push_irq(&svm->vcpu, exit_int_info & SVM_EVTINJ_VEC_MASK);
- }
fault_address = svm->vmcb->control.exit_info_2;
error_code = svm->vmcb->control.exit_info_1;
@@ -1137,23 +1134,40 @@ static int pf_interception(struct vcpu_svm *svm, struct kvm_run *kvm_run)
*/
if (npt_enabled)
svm_flush_tlb(&svm->vcpu);
-
- if (!npt_enabled && event_injection)
- kvm_mmu_unprotect_page_virt(&svm->vcpu, fault_address);
+ else {
+ if (kvm_event_needs_reinjection(&svm->vcpu))
+ kvm_mmu_unprotect_page_virt(&svm->vcpu, fault_address);
+ }
return kvm_mmu_page_fault(&svm->vcpu, fault_address, error_code);
}
static int db_interception(struct vcpu_svm *svm, struct kvm_run *kvm_run)
{
if (!(svm->vcpu.guest_debug &
- (KVM_GUESTDBG_SINGLESTEP | KVM_GUESTDBG_USE_HW_BP))) {
+ (KVM_GUESTDBG_SINGLESTEP | KVM_GUESTDBG_USE_HW_BP)) &&
+ !svm->vcpu.arch.singlestep) {
kvm_queue_exception(&svm->vcpu, DB_VECTOR);
return 1;
}
- kvm_run->exit_reason = KVM_EXIT_DEBUG;
- kvm_run->debug.arch.pc = svm->vmcb->save.cs.base + svm->vmcb->save.rip;
- kvm_run->debug.arch.exception = DB_VECTOR;
- return 0;
+
+ if (svm->vcpu.arch.singlestep) {
+ svm->vcpu.arch.singlestep = false;
+ if (!(svm->vcpu.guest_debug & KVM_GUESTDBG_SINGLESTEP))
+ svm->vmcb->save.rflags &=
+ ~(X86_EFLAGS_TF | X86_EFLAGS_RF);
+ update_db_intercept(&svm->vcpu);
+ }
+
+ if (svm->vcpu.guest_debug &
+ (KVM_GUESTDBG_SINGLESTEP | KVM_GUESTDBG_USE_HW_BP)){
+ kvm_run->exit_reason = KVM_EXIT_DEBUG;
+ kvm_run->debug.arch.pc =
+ svm->vmcb->save.cs.base + svm->vmcb->save.rip;
+ kvm_run->debug.arch.exception = DB_VECTOR;
+ return 0;
+ }
+
+ return 1;
}
static int bp_interception(struct vcpu_svm *svm, struct kvm_run *kvm_run)
@@ -1842,17 +1856,51 @@ static int task_switch_interception(struct vcpu_svm *svm,
struct kvm_run *kvm_run)
{
u16 tss_selector;
+ int reason;
+ int int_type = svm->vmcb->control.exit_int_info &
+ SVM_EXITINTINFO_TYPE_MASK;
+ int int_vec = svm->vmcb->control.exit_int_info & SVM_EVTINJ_VEC_MASK;
+ uint32_t type =
+ svm->vmcb->control.exit_int_info & SVM_EXITINTINFO_TYPE_MASK;
+ uint32_t idt_v =
+ svm->vmcb->control.exit_int_info & SVM_EXITINTINFO_VALID;
tss_selector = (u16)svm->vmcb->control.exit_info_1;
+
if (svm->vmcb->control.exit_info_2 &
(1ULL << SVM_EXITINFOSHIFT_TS_REASON_IRET))
- return kvm_task_switch(&svm->vcpu, tss_selector,
- TASK_SWITCH_IRET);
- if (svm->vmcb->control.exit_info_2 &
- (1ULL << SVM_EXITINFOSHIFT_TS_REASON_JMP))
- return kvm_task_switch(&svm->vcpu, tss_selector,
- TASK_SWITCH_JMP);
- return kvm_task_switch(&svm->vcpu, tss_selector, TASK_SWITCH_CALL);
+ reason = TASK_SWITCH_IRET;
+ else if (svm->vmcb->control.exit_info_2 &
+ (1ULL << SVM_EXITINFOSHIFT_TS_REASON_JMP))
+ reason = TASK_SWITCH_JMP;
+ else if (idt_v)
+ reason = TASK_SWITCH_GATE;
+ else
+ reason = TASK_SWITCH_CALL;
+
+ if (reason == TASK_SWITCH_GATE) {
+ switch (type) {
+ case SVM_EXITINTINFO_TYPE_NMI:
+ svm->vcpu.arch.nmi_injected = false;
+ break;
+ case SVM_EXITINTINFO_TYPE_EXEPT:
+ kvm_clear_exception_queue(&svm->vcpu);
+ break;
+ case SVM_EXITINTINFO_TYPE_INTR:
+ kvm_clear_interrupt_queue(&svm->vcpu);
+ break;
+ default:
+ break;
+ }
+ }
+
+ if (reason != TASK_SWITCH_GATE ||
+ int_type == SVM_EXITINTINFO_TYPE_SOFT ||
+ (int_type == SVM_EXITINTINFO_TYPE_EXEPT &&
+ (int_vec == OF_VECTOR || int_vec == BP_VECTOR)))
+ skip_emulated_instruction(&svm->vcpu);
+
+ return kvm_task_switch(&svm->vcpu, tss_selector, reason);
}
static int cpuid_interception(struct vcpu_svm *svm, struct kvm_run *kvm_run)
@@ -1862,6 +1910,14 @@ static int cpuid_interception(struct vcpu_svm *svm, struct kvm_run *kvm_run)
return 1;
}
+static int iret_interception(struct vcpu_svm *svm, struct kvm_run *kvm_run)
+{
+ ++svm->vcpu.stat.nmi_window_exits;
+ svm->vmcb->control.intercept &= ~(1UL << INTERCEPT_IRET);
+ svm->vcpu.arch.hflags |= HF_IRET_MASK;
+ return 1;
+}
+
static int invlpg_interception(struct vcpu_svm *svm, struct kvm_run *kvm_run)
{
if (emulate_instruction(&svm->vcpu, kvm_run, 0, 0, 0) != EMULATE_DONE)
@@ -1879,8 +1935,14 @@ static int emulate_on_interception(struct vcpu_svm *svm,
static int cr8_write_interception(struct vcpu_svm *svm, struct kvm_run *kvm_run)
{
+ u8 cr8_prev = kvm_get_cr8(&svm->vcpu);
+ /* instruction emulation calls kvm_set_cr8() */
emulate_instruction(&svm->vcpu, NULL, 0, 0, 0);
- if (irqchip_in_kernel(svm->vcpu.kvm))
+ if (irqchip_in_kernel(svm->vcpu.kvm)) {
+ svm->vmcb->control.intercept_cr_write &= ~INTERCEPT_CR8_MASK;
+ return 1;
+ }
+ if (cr8_prev <= kvm_get_cr8(&svm->vcpu))
return 1;
kvm_run->exit_reason = KVM_EXIT_SET_TPR;
return 0;
@@ -2090,8 +2152,9 @@ static int interrupt_window_interception(struct vcpu_svm *svm,
* If the user space waits to inject interrupts, exit as soon as
* possible
*/
- if (kvm_run->request_interrupt_window &&
- !svm->vcpu.arch.irq_summary) {
+ if (!irqchip_in_kernel(svm->vcpu.kvm) &&
+ kvm_run->request_interrupt_window &&
+ !kvm_cpu_has_interrupt(&svm->vcpu)) {
++svm->vcpu.stat.irq_window_exits;
kvm_run->exit_reason = KVM_EXIT_IRQ_WINDOW_OPEN;
return 0;
@@ -2134,6 +2197,7 @@ static int (*svm_exit_handlers[])(struct vcpu_svm *svm,
[SVM_EXIT_VINTR] = interrupt_window_interception,
/* [SVM_EXIT_CR0_SEL_WRITE] = emulate_on_interception, */
[SVM_EXIT_CPUID] = cpuid_interception,
+ [SVM_EXIT_IRET] = iret_interception,
[SVM_EXIT_INVD] = emulate_on_interception,
[SVM_EXIT_HLT] = halt_interception,
[SVM_EXIT_INVLPG] = invlpg_interception,
@@ -2194,7 +2258,6 @@ static int handle_exit(struct kvm_run *kvm_run, struct kvm_vcpu *vcpu)
}
}
- kvm_reput_irq(svm);
if (svm->vmcb->control.exit_code == SVM_EXIT_ERR) {
kvm_run->exit_reason = KVM_EXIT_FAIL_ENTRY;
@@ -2205,7 +2268,7 @@ static int handle_exit(struct kvm_run *kvm_run, struct kvm_vcpu *vcpu)
if (is_external_interrupt(svm->vmcb->control.exit_int_info) &&
exit_code != SVM_EXIT_EXCP_BASE + PF_VECTOR &&
- exit_code != SVM_EXIT_NPF)
+ exit_code != SVM_EXIT_NPF && exit_code != SVM_EXIT_TASK_SWITCH)
printk(KERN_ERR "%s: unexpected exit_ini_info 0x%x "
"exit_code 0x%x\n",
__func__, svm->vmcb->control.exit_int_info,
@@ -2242,6 +2305,15 @@ static void pre_svm_run(struct vcpu_svm *svm)
new_asid(svm, svm_data);
}
+static void svm_inject_nmi(struct kvm_vcpu *vcpu)
+{
+ struct vcpu_svm *svm = to_svm(vcpu);
+
+ svm->vmcb->control.event_inj = SVM_EVTINJ_VALID | SVM_EVTINJ_TYPE_NMI;
+ vcpu->arch.hflags |= HF_NMI_MASK;
+ svm->vmcb->control.intercept |= (1UL << INTERCEPT_IRET);
+ ++vcpu->stat.nmi_injections;
+}
static inline void svm_inject_irq(struct vcpu_svm *svm, int irq)
{
@@ -2257,134 +2329,71 @@ static inline void svm_inject_irq(struct vcpu_svm *svm, int irq)
((/*control->int_vector >> 4*/ 0xf) << V_INTR_PRIO_SHIFT);
}
-static void svm_set_irq(struct kvm_vcpu *vcpu, int irq)
+static void svm_queue_irq(struct kvm_vcpu *vcpu, unsigned nr)
{
struct vcpu_svm *svm = to_svm(vcpu);
- nested_svm_intr(svm);
-
- svm_inject_irq(svm, irq);
+ svm->vmcb->control.event_inj = nr |
+ SVM_EVTINJ_VALID | SVM_EVTINJ_TYPE_INTR;
}
-static void update_cr8_intercept(struct kvm_vcpu *vcpu)
+static void svm_set_irq(struct kvm_vcpu *vcpu)
{
struct vcpu_svm *svm = to_svm(vcpu);
- struct vmcb *vmcb = svm->vmcb;
- int max_irr, tpr;
- if (!irqchip_in_kernel(vcpu->kvm) || vcpu->arch.apic->vapic_addr)
- return;
+ nested_svm_intr(svm);
- vmcb->control.intercept_cr_write &= ~INTERCEPT_CR8_MASK;
+ svm_queue_irq(vcpu, vcpu->arch.interrupt.nr);
+}
- max_irr = kvm_lapic_find_highest_irr(vcpu);
- if (max_irr == -1)
- return;
+static void update_cr8_intercept(struct kvm_vcpu *vcpu, int tpr, int irr)
+{
+ struct vcpu_svm *svm = to_svm(vcpu);
- tpr = kvm_lapic_get_cr8(vcpu) << 4;
+ if (irr == -1)
+ return;
- if (tpr >= (max_irr & 0xf0))
- vmcb->control.intercept_cr_write |= INTERCEPT_CR8_MASK;
+ if (tpr >= irr)
+ svm->vmcb->control.intercept_cr_write |= INTERCEPT_CR8_MASK;
}
-static void svm_intr_assist(struct kvm_vcpu *vcpu)
+static int svm_nmi_allowed(struct kvm_vcpu *vcpu)
{
struct vcpu_svm *svm = to_svm(vcpu);
struct vmcb *vmcb = svm->vmcb;
- int intr_vector = -1;
-
- if ((vmcb->control.exit_int_info & SVM_EVTINJ_VALID) &&
- ((vmcb->control.exit_int_info & SVM_EVTINJ_TYPE_MASK) == 0)) {
- intr_vector = vmcb->control.exit_int_info &
- SVM_EVTINJ_VEC_MASK;
- vmcb->control.exit_int_info = 0;
- svm_inject_irq(svm, intr_vector);
- goto out;
- }
-
- if (vmcb->control.int_ctl & V_IRQ_MASK)
- goto out;
-
- if (!kvm_cpu_has_interrupt(vcpu))
- goto out;
-
- if (nested_svm_intr(svm))
- goto out;
-
- if (!(svm->vcpu.arch.hflags & HF_GIF_MASK))
- goto out;
-
- if (!(vmcb->save.rflags & X86_EFLAGS_IF) ||
- (vmcb->control.int_state & SVM_INTERRUPT_SHADOW_MASK) ||
- (vmcb->control.event_inj & SVM_EVTINJ_VALID)) {
- /* unable to deliver irq, set pending irq */
- svm_set_vintr(svm);
- svm_inject_irq(svm, 0x0);
- goto out;
- }
- /* Okay, we can deliver the interrupt: grab it and update PIC state. */
- intr_vector = kvm_cpu_get_interrupt(vcpu);
- svm_inject_irq(svm, intr_vector);
-out:
- update_cr8_intercept(vcpu);
+ return !(vmcb->control.int_state & SVM_INTERRUPT_SHADOW_MASK) &&
+ !(svm->vcpu.arch.hflags & HF_NMI_MASK);
}
-static void kvm_reput_irq(struct vcpu_svm *svm)
+static int svm_interrupt_allowed(struct kvm_vcpu *vcpu)
{
- struct vmcb_control_area *control = &svm->vmcb->control;
-
- if ((control->int_ctl & V_IRQ_MASK)
- && !irqchip_in_kernel(svm->vcpu.kvm)) {
- control->int_ctl &= ~V_IRQ_MASK;
- push_irq(&svm->vcpu, control->int_vector);
- }
-
- svm->vcpu.arch.interrupt_window_open =
- !(control->int_state & SVM_INTERRUPT_SHADOW_MASK) &&
- (svm->vcpu.arch.hflags & HF_GIF_MASK);
+ struct vcpu_svm *svm = to_svm(vcpu);
+ struct vmcb *vmcb = svm->vmcb;
+ return (vmcb->save.rflags & X86_EFLAGS_IF) &&
+ !(vmcb->control.int_state & SVM_INTERRUPT_SHADOW_MASK) &&
+ (svm->vcpu.arch.hflags & HF_GIF_MASK);
}
-static void svm_do_inject_vector(struct vcpu_svm *svm)
+static void enable_irq_window(struct kvm_vcpu *vcpu)
{
- struct kvm_vcpu *vcpu = &svm->vcpu;
- int word_index = __ffs(vcpu->arch.irq_summary);
- int bit_index = __ffs(vcpu->arch.irq_pending[word_index]);
- int irq = word_index * BITS_PER_LONG + bit_index;
-
- clear_bit(bit_index, &vcpu->arch.irq_pending[word_index]);
- if (!vcpu->arch.irq_pending[word_index])
- clear_bit(word_index, &vcpu->arch.irq_summary);
- svm_inject_irq(svm, irq);
+ svm_set_vintr(to_svm(vcpu));
+ svm_inject_irq(to_svm(vcpu), 0x0);
}
-static void do_interrupt_requests(struct kvm_vcpu *vcpu,
- struct kvm_run *kvm_run)
+static void enable_nmi_window(struct kvm_vcpu *vcpu)
{
struct vcpu_svm *svm = to_svm(vcpu);
- struct vmcb_control_area *control = &svm->vmcb->control;
-
- if (nested_svm_intr(svm))
- return;
- svm->vcpu.arch.interrupt_window_open =
- (!(control->int_state & SVM_INTERRUPT_SHADOW_MASK) &&
- (svm->vmcb->save.rflags & X86_EFLAGS_IF) &&
- (svm->vcpu.arch.hflags & HF_GIF_MASK));
+ if ((svm->vcpu.arch.hflags & (HF_NMI_MASK | HF_IRET_MASK))
+ == HF_NMI_MASK)
+ return; /* IRET will cause a vm exit */
- if (svm->vcpu.arch.interrupt_window_open && svm->vcpu.arch.irq_summary)
- /*
- * If interrupts enabled, and not blocked by sti or mov ss. Good.
- */
- svm_do_inject_vector(svm);
-
- /*
- * Interrupts blocked. Wait for unblock.
- */
- if (!svm->vcpu.arch.interrupt_window_open &&
- (svm->vcpu.arch.irq_summary || kvm_run->request_interrupt_window))
- svm_set_vintr(svm);
- else
- svm_clear_vintr(svm);
+ /* Something prevents NMI from been injected. Single step over
+ possible problem (IRET or exception injection or interrupt
+ shadow) */
+ vcpu->arch.singlestep = true;
+ svm->vmcb->save.rflags |= (X86_EFLAGS_TF | X86_EFLAGS_RF);
+ update_db_intercept(vcpu);
}
static int svm_set_tss_addr(struct kvm *kvm, unsigned int addr)
@@ -2407,7 +2416,7 @@ static inline void sync_cr8_to_lapic(struct kvm_vcpu *vcpu)
if (!(svm->vmcb->control.intercept_cr_write & INTERCEPT_CR8_MASK)) {
int cr8 = svm->vmcb->control.int_ctl & V_TPR_MASK;
- kvm_lapic_set_tpr(vcpu, cr8);
+ kvm_set_cr8(vcpu, cr8);
}
}
@@ -2416,14 +2425,54 @@ static inline void sync_lapic_to_cr8(struct kvm_vcpu *vcpu)
struct vcpu_svm *svm = to_svm(vcpu);
u64 cr8;
- if (!irqchip_in_kernel(vcpu->kvm))
- return;
-
cr8 = kvm_get_cr8(vcpu);
svm->vmcb->control.int_ctl &= ~V_TPR_MASK;
svm->vmcb->control.int_ctl |= cr8 & V_TPR_MASK;
}
+static void svm_complete_interrupts(struct vcpu_svm *svm)
+{
+ u8 vector;
+ int type;
+ u32 exitintinfo = svm->vmcb->control.exit_int_info;
+
+ if (svm->vcpu.arch.hflags & HF_IRET_MASK)
+ svm->vcpu.arch.hflags &= ~(HF_NMI_MASK | HF_IRET_MASK);
+
+ svm->vcpu.arch.nmi_injected = false;
+ kvm_clear_exception_queue(&svm->vcpu);
+ kvm_clear_interrupt_queue(&svm->vcpu);
+
+ if (!(exitintinfo & SVM_EXITINTINFO_VALID))
+ return;
+
+ vector = exitintinfo & SVM_EXITINTINFO_VEC_MASK;
+ type = exitintinfo & SVM_EXITINTINFO_TYPE_MASK;
+
+ switch (type) {
+ case SVM_EXITINTINFO_TYPE_NMI:
+ svm->vcpu.arch.nmi_injected = true;
+ break;
+ case SVM_EXITINTINFO_TYPE_EXEPT:
+ /* In case of software exception do not reinject an exception
+ vector, but re-execute and instruction instead */
+ if (kvm_exception_is_soft(vector))
+ break;
+ if (exitintinfo & SVM_EXITINTINFO_VALID_ERR) {
+ u32 err = svm->vmcb->control.exit_int_info_err;
+ kvm_queue_exception_e(&svm->vcpu, vector, err);
+
+ } else
+ kvm_queue_exception(&svm->vcpu, vector);
+ break;
+ case SVM_EXITINTINFO_TYPE_INTR:
+ kvm_queue_interrupt(&svm->vcpu, vector, false);
+ break;
+ default:
+ break;
+ }
+}
+
#ifdef CONFIG_X86_64
#define R "r"
#else
@@ -2552,6 +2601,8 @@ static void svm_vcpu_run(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run)
sync_cr8_to_lapic(vcpu);
svm->next_rip = 0;
+
+ svm_complete_interrupts(svm);
}
#undef R
@@ -2617,7 +2668,7 @@ static int get_npt_level(void)
#endif
}
-static int svm_get_mt_mask_shift(void)
+static u64 svm_get_mt_mask(struct kvm_vcpu *vcpu, gfn_t gfn, bool is_mmio)
{
return 0;
}
@@ -2667,17 +2718,21 @@ static struct kvm_x86_ops svm_x86_ops = {
.run = svm_vcpu_run,
.handle_exit = handle_exit,
.skip_emulated_instruction = skip_emulated_instruction,
+ .set_interrupt_shadow = svm_set_interrupt_shadow,
+ .get_interrupt_shadow = svm_get_interrupt_shadow,
.patch_hypercall = svm_patch_hypercall,
- .get_irq = svm_get_irq,
.set_irq = svm_set_irq,
+ .set_nmi = svm_inject_nmi,
.queue_exception = svm_queue_exception,
- .exception_injected = svm_exception_injected,
- .inject_pending_irq = svm_intr_assist,
- .inject_pending_vectors = do_interrupt_requests,
+ .interrupt_allowed = svm_interrupt_allowed,
+ .nmi_allowed = svm_nmi_allowed,
+ .enable_nmi_window = enable_nmi_window,
+ .enable_irq_window = enable_irq_window,
+ .update_cr8_intercept = update_cr8_intercept,
.set_tss_addr = svm_set_tss_addr,
.get_tdp_level = get_npt_level,
- .get_mt_mask_shift = svm_get_mt_mask_shift,
+ .get_mt_mask = svm_get_mt_mask,
};
static int __init svm_init(void)
diff --git a/arch/x86/kvm/timer.c b/arch/x86/kvm/timer.c
new file mode 100644
index 0000000..86dbac0
--- /dev/null
+++ b/arch/x86/kvm/timer.c
@@ -0,0 +1,46 @@
+#include <linux/kvm_host.h>
+#include <linux/kvm.h>
+#include <linux/hrtimer.h>
+#include <asm/atomic.h>
+#include "kvm_timer.h"
+
+static int __kvm_timer_fn(struct kvm_vcpu *vcpu, struct kvm_timer *ktimer)
+{
+ int restart_timer = 0;
+ wait_queue_head_t *q = &vcpu->wq;
+
+ /* FIXME: this code should not know anything about vcpus */
+ if (!atomic_inc_and_test(&ktimer->pending))
+ set_bit(KVM_REQ_PENDING_TIMER, &vcpu->requests);
+
+ if (!ktimer->reinject)
+ atomic_set(&ktimer->pending, 1);
+
+ if (waitqueue_active(q))
+ wake_up_interruptible(q);
+
+ if (ktimer->t_ops->is_periodic(ktimer)) {
+ hrtimer_add_expires_ns(&ktimer->timer, ktimer->period);
+ restart_timer = 1;
+ }
+
+ return restart_timer;
+}
+
+enum hrtimer_restart kvm_timer_fn(struct hrtimer *data)
+{
+ int restart_timer;
+ struct kvm_vcpu *vcpu;
+ struct kvm_timer *ktimer = container_of(data, struct kvm_timer, timer);
+
+ vcpu = ktimer->kvm->vcpus[ktimer->vcpu_id];
+ if (!vcpu)
+ return HRTIMER_NORESTART;
+
+ restart_timer = __kvm_timer_fn(vcpu, ktimer);
+ if (restart_timer)
+ return HRTIMER_RESTART;
+ else
+ return HRTIMER_NORESTART;
+}
+
diff --git a/arch/x86/kvm/vmx.c b/arch/x86/kvm/vmx.c
index bb48133..32d6ae8 100644
--- a/arch/x86/kvm/vmx.c
+++ b/arch/x86/kvm/vmx.c
@@ -32,26 +32,27 @@
#include <asm/desc.h>
#include <asm/vmx.h>
#include <asm/virtext.h>
+#include <asm/mce.h>
#define __ex(x) __kvm_handle_fault_on_reboot(x)
MODULE_AUTHOR("Qumranet");
MODULE_LICENSE("GPL");
-static int bypass_guest_pf = 1;
-module_param(bypass_guest_pf, bool, 0);
+static int __read_mostly bypass_guest_pf = 1;
+module_param(bypass_guest_pf, bool, S_IRUGO);
-static int enable_vpid = 1;
-module_param(enable_vpid, bool, 0);
+static int __read_mostly enable_vpid = 1;
+module_param_named(vpid, enable_vpid, bool, 0444);
-static int flexpriority_enabled = 1;
-module_param(flexpriority_enabled, bool, 0);
+static int __read_mostly flexpriority_enabled = 1;
+module_param_named(flexpriority, flexpriority_enabled, bool, S_IRUGO);
-static int enable_ept = 1;
-module_param(enable_ept, bool, 0);
+static int __read_mostly enable_ept = 1;
+module_param_named(ept, enable_ept, bool, S_IRUGO);
-static int emulate_invalid_guest_state = 0;
-module_param(emulate_invalid_guest_state, bool, 0);
+static int __read_mostly emulate_invalid_guest_state = 0;
+module_param(emulate_invalid_guest_state, bool, S_IRUGO);
struct vmcs {
u32 revision_id;
@@ -97,6 +98,7 @@ struct vcpu_vmx {
int soft_vnmi_blocked;
ktime_t entry_time;
s64 vnmi_blocked_time;
+ u32 exit_reason;
};
static inline struct vcpu_vmx *to_vmx(struct kvm_vcpu *vcpu)
@@ -111,9 +113,10 @@ static DEFINE_PER_CPU(struct vmcs *, vmxarea);
static DEFINE_PER_CPU(struct vmcs *, current_vmcs);
static DEFINE_PER_CPU(struct list_head, vcpus_on_cpu);
-static struct page *vmx_io_bitmap_a;
-static struct page *vmx_io_bitmap_b;
-static struct page *vmx_msr_bitmap;
+static unsigned long *vmx_io_bitmap_a;
+static unsigned long *vmx_io_bitmap_b;
+static unsigned long *vmx_msr_bitmap_legacy;
+static unsigned long *vmx_msr_bitmap_longmode;
static DECLARE_BITMAP(vmx_vpid_bitmap, VMX_NR_VPIDS);
static DEFINE_SPINLOCK(vmx_vpid_lock);
@@ -213,70 +216,78 @@ static inline int is_external_interrupt(u32 intr_info)
== (INTR_TYPE_EXT_INTR | INTR_INFO_VALID_MASK);
}
+static inline int is_machine_check(u32 intr_info)
+{
+ return (intr_info & (INTR_INFO_INTR_TYPE_MASK | INTR_INFO_VECTOR_MASK |
+ INTR_INFO_VALID_MASK)) ==
+ (INTR_TYPE_HARD_EXCEPTION | MC_VECTOR | INTR_INFO_VALID_MASK);
+}
+
static inline int cpu_has_vmx_msr_bitmap(void)
{
- return (vmcs_config.cpu_based_exec_ctrl & CPU_BASED_USE_MSR_BITMAPS);
+ return vmcs_config.cpu_based_exec_ctrl & CPU_BASED_USE_MSR_BITMAPS;
}
static inline int cpu_has_vmx_tpr_shadow(void)
{
- return (vmcs_config.cpu_based_exec_ctrl & CPU_BASED_TPR_SHADOW);
+ return vmcs_config.cpu_based_exec_ctrl & CPU_BASED_TPR_SHADOW;
}
static inline int vm_need_tpr_shadow(struct kvm *kvm)
{
- return ((cpu_has_vmx_tpr_shadow()) && (irqchip_in_kernel(kvm)));
+ return (cpu_has_vmx_tpr_shadow()) && (irqchip_in_kernel(kvm));
}
static inline int cpu_has_secondary_exec_ctrls(void)
{
- return (vmcs_config.cpu_based_exec_ctrl &
- CPU_BASED_ACTIVATE_SECONDARY_CONTROLS);
+ return vmcs_config.cpu_based_exec_ctrl &
+ CPU_BASED_ACTIVATE_SECONDARY_CONTROLS;
}
static inline bool cpu_has_vmx_virtualize_apic_accesses(void)
{
- return flexpriority_enabled
- && (vmcs_config.cpu_based_2nd_exec_ctrl &
- SECONDARY_EXEC_VIRTUALIZE_APIC_ACCESSES);
+ return vmcs_config.cpu_based_2nd_exec_ctrl &
+ SECONDARY_EXEC_VIRTUALIZE_APIC_ACCESSES;
+}
+
+static inline bool cpu_has_vmx_flexpriority(void)
+{
+ return cpu_has_vmx_tpr_shadow() &&
+ cpu_has_vmx_virtualize_apic_accesses();
}
static inline int cpu_has_vmx_invept_individual_addr(void)
{
- return (!!(vmx_capability.ept & VMX_EPT_EXTENT_INDIVIDUAL_BIT));
+ return !!(vmx_capability.ept & VMX_EPT_EXTENT_INDIVIDUAL_BIT);
}
static inline int cpu_has_vmx_invept_context(void)
{
- return (!!(vmx_capability.ept & VMX_EPT_EXTENT_CONTEXT_BIT));
+ return !!(vmx_capability.ept & VMX_EPT_EXTENT_CONTEXT_BIT);
}
static inline int cpu_has_vmx_invept_global(void)
{
- return (!!(vmx_capability.ept & VMX_EPT_EXTENT_GLOBAL_BIT));
+ return !!(vmx_capability.ept & VMX_EPT_EXTENT_GLOBAL_BIT);
}
static inline int cpu_has_vmx_ept(void)
{
- return (vmcs_config.cpu_based_2nd_exec_ctrl &
- SECONDARY_EXEC_ENABLE_EPT);
-}
-
-static inline int vm_need_ept(void)
-{
- return (cpu_has_vmx_ept() && enable_ept);
+ return vmcs_config.cpu_based_2nd_exec_ctrl &
+ SECONDARY_EXEC_ENABLE_EPT;
}
static inline int vm_need_virtualize_apic_accesses(struct kvm *kvm)
{
- return ((cpu_has_vmx_virtualize_apic_accesses()) &&
- (irqchip_in_kernel(kvm)));
+ return flexpriority_enabled &&
+ (cpu_has_vmx_virtualize_apic_accesses()) &&
+ (irqchip_in_kernel(kvm));
}
static inline int cpu_has_vmx_vpid(void)
{
- return (vmcs_config.cpu_based_2nd_exec_ctrl &
- SECONDARY_EXEC_ENABLE_VPID);
+ return vmcs_config.cpu_based_2nd_exec_ctrl &
+ SECONDARY_EXEC_ENABLE_VPID;
}
static inline int cpu_has_virtual_nmis(void)
@@ -284,6 +295,11 @@ static inline int cpu_has_virtual_nmis(void)
return vmcs_config.pin_based_exec_ctrl & PIN_BASED_VIRTUAL_NMIS;
}
+static inline bool report_flexpriority(void)
+{
+ return flexpriority_enabled;
+}
+
static int __find_msr_index(struct vcpu_vmx *vmx, u32 msr)
{
int i;
@@ -381,7 +397,7 @@ static inline void ept_sync_global(void)
static inline void ept_sync_context(u64 eptp)
{
- if (vm_need_ept()) {
+ if (enable_ept) {
if (cpu_has_vmx_invept_context())
__invept(VMX_EPT_EXTENT_CONTEXT, eptp, 0);
else
@@ -391,7 +407,7 @@ static inline void ept_sync_context(u64 eptp)
static inline void ept_sync_individual_addr(u64 eptp, gpa_t gpa)
{
- if (vm_need_ept()) {
+ if (enable_ept) {
if (cpu_has_vmx_invept_individual_addr())
__invept(VMX_EPT_EXTENT_INDIVIDUAL_ADDR,
eptp, gpa);
@@ -478,7 +494,7 @@ static void update_exception_bitmap(struct kvm_vcpu *vcpu)
{
u32 eb;
- eb = (1u << PF_VECTOR) | (1u << UD_VECTOR);
+ eb = (1u << PF_VECTOR) | (1u << UD_VECTOR) | (1u << MC_VECTOR);
if (!vcpu->fpu_active)
eb |= 1u << NM_VECTOR;
if (vcpu->guest_debug & KVM_GUESTDBG_ENABLE) {
@@ -488,9 +504,9 @@ static void update_exception_bitmap(struct kvm_vcpu *vcpu)
if (vcpu->guest_debug & KVM_GUESTDBG_USE_SW_BP)
eb |= 1u << BP_VECTOR;
}
- if (vcpu->arch.rmode.active)
+ if (vcpu->arch.rmode.vm86_active)
eb = ~0;
- if (vm_need_ept())
+ if (enable_ept)
eb &= ~(1u << PF_VECTOR); /* bypass_guest_pf = 0 */
vmcs_write32(EXCEPTION_BITMAP, eb);
}
@@ -724,29 +740,50 @@ static unsigned long vmx_get_rflags(struct kvm_vcpu *vcpu)
static void vmx_set_rflags(struct kvm_vcpu *vcpu, unsigned long rflags)
{
- if (vcpu->arch.rmode.active)
+ if (vcpu->arch.rmode.vm86_active)
rflags |= X86_EFLAGS_IOPL | X86_EFLAGS_VM;
vmcs_writel(GUEST_RFLAGS, rflags);
}
+static u32 vmx_get_interrupt_shadow(struct kvm_vcpu *vcpu, int mask)
+{
+ u32 interruptibility = vmcs_read32(GUEST_INTERRUPTIBILITY_INFO);
+ int ret = 0;
+
+ if (interruptibility & GUEST_INTR_STATE_STI)
+ ret |= X86_SHADOW_INT_STI;
+ if (interruptibility & GUEST_INTR_STATE_MOV_SS)
+ ret |= X86_SHADOW_INT_MOV_SS;
+
+ return ret & mask;
+}
+
+static void vmx_set_interrupt_shadow(struct kvm_vcpu *vcpu, int mask)
+{
+ u32 interruptibility_old = vmcs_read32(GUEST_INTERRUPTIBILITY_INFO);
+ u32 interruptibility = interruptibility_old;
+
+ interruptibility &= ~(GUEST_INTR_STATE_STI | GUEST_INTR_STATE_MOV_SS);
+
+ if (mask & X86_SHADOW_INT_MOV_SS)
+ interruptibility |= GUEST_INTR_STATE_MOV_SS;
+ if (mask & X86_SHADOW_INT_STI)
+ interruptibility |= GUEST_INTR_STATE_STI;
+
+ if ((interruptibility != interruptibility_old))
+ vmcs_write32(GUEST_INTERRUPTIBILITY_INFO, interruptibility);
+}
+
static void skip_emulated_instruction(struct kvm_vcpu *vcpu)
{
unsigned long rip;
- u32 interruptibility;
rip = kvm_rip_read(vcpu);
rip += vmcs_read32(VM_EXIT_INSTRUCTION_LEN);
kvm_rip_write(vcpu, rip);
- /*
- * We emulated an instruction, so temporary interrupt blocking
- * should be removed, if set.
- */
- interruptibility = vmcs_read32(GUEST_INTERRUPTIBILITY_INFO);
- if (interruptibility & 3)
- vmcs_write32(GUEST_INTERRUPTIBILITY_INFO,
- interruptibility & ~3);
- vcpu->arch.interrupt_window_open = 1;
+ /* skipping an emulated instruction also counts */
+ vmx_set_interrupt_shadow(vcpu, 0);
}
static void vmx_queue_exception(struct kvm_vcpu *vcpu, unsigned nr,
@@ -760,7 +797,7 @@ static void vmx_queue_exception(struct kvm_vcpu *vcpu, unsigned nr,
intr_info |= INTR_INFO_DELIVER_CODE_MASK;
}
- if (vcpu->arch.rmode.active) {
+ if (vcpu->arch.rmode.vm86_active) {
vmx->rmode.irq.pending = true;
vmx->rmode.irq.vector = nr;
vmx->rmode.irq.rip = kvm_rip_read(vcpu);
@@ -773,8 +810,9 @@ static void vmx_queue_exception(struct kvm_vcpu *vcpu, unsigned nr,
return;
}
- if (nr == BP_VECTOR || nr == OF_VECTOR) {
- vmcs_write32(VM_ENTRY_INSTRUCTION_LEN, 1);
+ if (kvm_exception_is_soft(nr)) {
+ vmcs_write32(VM_ENTRY_INSTRUCTION_LEN,
+ vmx->vcpu.arch.event_exit_inst_len);
intr_info |= INTR_TYPE_SOFT_EXCEPTION;
} else
intr_info |= INTR_TYPE_HARD_EXCEPTION;
@@ -782,11 +820,6 @@ static void vmx_queue_exception(struct kvm_vcpu *vcpu, unsigned nr,
vmcs_write32(VM_ENTRY_INTR_INFO_FIELD, intr_info);
}
-static bool vmx_exception_injected(struct kvm_vcpu *vcpu)
-{
- return false;
-}
-
/*
* Swap MSR entry in host/guest MSR entry array.
*/
@@ -812,6 +845,7 @@ static void move_msr_up(struct vcpu_vmx *vmx, int from, int to)
static void setup_msrs(struct vcpu_vmx *vmx)
{
int save_nmsrs;
+ unsigned long *msr_bitmap;
vmx_load_host_state(vmx);
save_nmsrs = 0;
@@ -847,6 +881,15 @@ static void setup_msrs(struct vcpu_vmx *vmx)
__find_msr_index(vmx, MSR_KERNEL_GS_BASE);
#endif
vmx->msr_offset_efer = __find_msr_index(vmx, MSR_EFER);
+
+ if (cpu_has_vmx_msr_bitmap()) {
+ if (is_long_mode(&vmx->vcpu))
+ msr_bitmap = vmx_msr_bitmap_longmode;
+ else
+ msr_bitmap = vmx_msr_bitmap_legacy;
+
+ vmcs_write64(MSR_BITMAP, __pa(msr_bitmap));
+ }
}
/*
@@ -1034,13 +1077,6 @@ static int set_guest_debug(struct kvm_vcpu *vcpu, struct kvm_guest_debug *dbg)
return 0;
}
-static int vmx_get_irq(struct kvm_vcpu *vcpu)
-{
- if (!vcpu->arch.interrupt.pending)
- return -1;
- return vcpu->arch.interrupt.nr;
-}
-
static __init int cpu_has_kvm_support(void)
{
return cpu_has_vmx();
@@ -1294,6 +1330,18 @@ static __init int hardware_setup(void)
if (boot_cpu_has(X86_FEATURE_NX))
kvm_enable_efer_bits(EFER_NX);
+ if (!cpu_has_vmx_vpid())
+ enable_vpid = 0;
+
+ if (!cpu_has_vmx_ept())
+ enable_ept = 0;
+
+ if (!cpu_has_vmx_flexpriority())
+ flexpriority_enabled = 0;
+
+ if (!cpu_has_vmx_tpr_shadow())
+ kvm_x86_ops->update_cr8_intercept = NULL;
+
return alloc_kvm_area();
}
@@ -1324,7 +1372,7 @@ static void enter_pmode(struct kvm_vcpu *vcpu)
struct vcpu_vmx *vmx = to_vmx(vcpu);
vmx->emulation_required = 1;
- vcpu->arch.rmode.active = 0;
+ vcpu->arch.rmode.vm86_active = 0;
vmcs_writel(GUEST_TR_BASE, vcpu->arch.rmode.tr.base);
vmcs_write32(GUEST_TR_LIMIT, vcpu->arch.rmode.tr.limit);
@@ -1386,7 +1434,7 @@ static void enter_rmode(struct kvm_vcpu *vcpu)
struct vcpu_vmx *vmx = to_vmx(vcpu);
vmx->emulation_required = 1;
- vcpu->arch.rmode.active = 1;
+ vcpu->arch.rmode.vm86_active = 1;
vcpu->arch.rmode.tr.base = vmcs_readl(GUEST_TR_BASE);
vmcs_writel(GUEST_TR_BASE, rmode_tss_base(vcpu->kvm));
@@ -1485,7 +1533,7 @@ static void exit_lmode(struct kvm_vcpu *vcpu)
static void vmx_flush_tlb(struct kvm_vcpu *vcpu)
{
vpid_sync_vcpu_all(to_vmx(vcpu));
- if (vm_need_ept())
+ if (enable_ept)
ept_sync_context(construct_eptp(vcpu->arch.mmu.root_hpa));
}
@@ -1555,10 +1603,10 @@ static void vmx_set_cr0(struct kvm_vcpu *vcpu, unsigned long cr0)
vmx_fpu_deactivate(vcpu);
- if (vcpu->arch.rmode.active && (cr0 & X86_CR0_PE))
+ if (vcpu->arch.rmode.vm86_active && (cr0 & X86_CR0_PE))
enter_pmode(vcpu);
- if (!vcpu->arch.rmode.active && !(cr0 & X86_CR0_PE))
+ if (!vcpu->arch.rmode.vm86_active && !(cr0 & X86_CR0_PE))
enter_rmode(vcpu);
#ifdef CONFIG_X86_64
@@ -1570,7 +1618,7 @@ static void vmx_set_cr0(struct kvm_vcpu *vcpu, unsigned long cr0)
}
#endif
- if (vm_need_ept())
+ if (enable_ept)
ept_update_paging_mode_cr0(&hw_cr0, cr0, vcpu);
vmcs_writel(CR0_READ_SHADOW, cr0);
@@ -1599,7 +1647,7 @@ static void vmx_set_cr3(struct kvm_vcpu *vcpu, unsigned long cr3)
u64 eptp;
guest_cr3 = cr3;
- if (vm_need_ept()) {
+ if (enable_ept) {
eptp = construct_eptp(cr3);
vmcs_write64(EPT_POINTER, eptp);
ept_sync_context(eptp);
@@ -1616,11 +1664,11 @@ static void vmx_set_cr3(struct kvm_vcpu *vcpu, unsigned long cr3)
static void vmx_set_cr4(struct kvm_vcpu *vcpu, unsigned long cr4)
{
- unsigned long hw_cr4 = cr4 | (vcpu->arch.rmode.active ?
+ unsigned long hw_cr4 = cr4 | (vcpu->arch.rmode.vm86_active ?
KVM_RMODE_VM_CR4_ALWAYS_ON : KVM_PMODE_VM_CR4_ALWAYS_ON);
vcpu->arch.cr4 = cr4;
- if (vm_need_ept())
+ if (enable_ept)
ept_update_paging_mode_cr4(&hw_cr4, vcpu);
vmcs_writel(CR4_READ_SHADOW, cr4);
@@ -1699,7 +1747,7 @@ static void vmx_set_segment(struct kvm_vcpu *vcpu,
struct kvm_vmx_segment_field *sf = &kvm_vmx_segment_fields[seg];
u32 ar;
- if (vcpu->arch.rmode.active && seg == VCPU_SREG_TR) {
+ if (vcpu->arch.rmode.vm86_active && seg == VCPU_SREG_TR) {
vcpu->arch.rmode.tr.selector = var->selector;
vcpu->arch.rmode.tr.base = var->base;
vcpu->arch.rmode.tr.limit = var->limit;
@@ -1709,7 +1757,7 @@ static void vmx_set_segment(struct kvm_vcpu *vcpu,
vmcs_writel(sf->base, var->base);
vmcs_write32(sf->limit, var->limit);
vmcs_write16(sf->selector, var->selector);
- if (vcpu->arch.rmode.active && var->s) {
+ if (vcpu->arch.rmode.vm86_active && var->s) {
/*
* Hack real-mode segments into vm86 compatibility.
*/
@@ -1982,7 +2030,7 @@ static int init_rmode_identity_map(struct kvm *kvm)
pfn_t identity_map_pfn;
u32 tmp;
- if (!vm_need_ept())
+ if (!enable_ept)
return 1;
if (unlikely(!kvm->arch.ept_identity_pagetable)) {
printk(KERN_ERR "EPT: identity-mapping pagetable "
@@ -2071,7 +2119,7 @@ static void allocate_vpid(struct vcpu_vmx *vmx)
int vpid;
vmx->vpid = 0;
- if (!enable_vpid || !cpu_has_vmx_vpid())
+ if (!enable_vpid)
return;
spin_lock(&vmx_vpid_lock);
vpid = find_first_zero_bit(vmx_vpid_bitmap, VMX_NR_VPIDS);
@@ -2082,9 +2130,9 @@ static void allocate_vpid(struct vcpu_vmx *vmx)
spin_unlock(&vmx_vpid_lock);
}
-static void vmx_disable_intercept_for_msr(struct page *msr_bitmap, u32 msr)
+static void __vmx_disable_intercept_for_msr(unsigned long *msr_bitmap, u32 msr)
{
- void *va;
+ int f = sizeof(unsigned long);
if (!cpu_has_vmx_msr_bitmap())
return;
@@ -2094,16 +2142,21 @@ static void vmx_disable_intercept_for_msr(struct page *msr_bitmap, u32 msr)
* have the write-low and read-high bitmap offsets the wrong way round.
* We can control MSRs 0x00000000-0x00001fff and 0xc0000000-0xc0001fff.
*/
- va = kmap(msr_bitmap);
if (msr <= 0x1fff) {
- __clear_bit(msr, va + 0x000); /* read-low */
- __clear_bit(msr, va + 0x800); /* write-low */
+ __clear_bit(msr, msr_bitmap + 0x000 / f); /* read-low */
+ __clear_bit(msr, msr_bitmap + 0x800 / f); /* write-low */
} else if ((msr >= 0xc0000000) && (msr <= 0xc0001fff)) {
msr &= 0x1fff;
- __clear_bit(msr, va + 0x400); /* read-high */
- __clear_bit(msr, va + 0xc00); /* write-high */
+ __clear_bit(msr, msr_bitmap + 0x400 / f); /* read-high */
+ __clear_bit(msr, msr_bitmap + 0xc00 / f); /* write-high */
}
- kunmap(msr_bitmap);
+}
+
+static void vmx_disable_intercept_for_msr(u32 msr, bool longmode_only)
+{
+ if (!longmode_only)
+ __vmx_disable_intercept_for_msr(vmx_msr_bitmap_legacy, msr);
+ __vmx_disable_intercept_for_msr(vmx_msr_bitmap_longmode, msr);
}
/*
@@ -2121,11 +2174,11 @@ static int vmx_vcpu_setup(struct vcpu_vmx *vmx)
u32 exec_control;
/* I/O */
- vmcs_write64(IO_BITMAP_A, page_to_phys(vmx_io_bitmap_a));
- vmcs_write64(IO_BITMAP_B, page_to_phys(vmx_io_bitmap_b));
+ vmcs_write64(IO_BITMAP_A, __pa(vmx_io_bitmap_a));
+ vmcs_write64(IO_BITMAP_B, __pa(vmx_io_bitmap_b));
if (cpu_has_vmx_msr_bitmap())
- vmcs_write64(MSR_BITMAP, page_to_phys(vmx_msr_bitmap));
+ vmcs_write64(MSR_BITMAP, __pa(vmx_msr_bitmap_legacy));
vmcs_write64(VMCS_LINK_POINTER, -1ull); /* 22.3.1.5 */
@@ -2141,7 +2194,7 @@ static int vmx_vcpu_setup(struct vcpu_vmx *vmx)
CPU_BASED_CR8_LOAD_EXITING;
#endif
}
- if (!vm_need_ept())
+ if (!enable_ept)
exec_control |= CPU_BASED_CR3_STORE_EXITING |
CPU_BASED_CR3_LOAD_EXITING |
CPU_BASED_INVLPG_EXITING;
@@ -2154,7 +2207,7 @@ static int vmx_vcpu_setup(struct vcpu_vmx *vmx)
~SECONDARY_EXEC_VIRTUALIZE_APIC_ACCESSES;
if (vmx->vpid == 0)
exec_control &= ~SECONDARY_EXEC_ENABLE_VPID;
- if (!vm_need_ept())
+ if (!enable_ept)
exec_control &= ~SECONDARY_EXEC_ENABLE_EPT;
vmcs_write32(SECONDARY_VM_EXEC_CONTROL, exec_control);
}
@@ -2273,7 +2326,7 @@ static int vmx_vcpu_reset(struct kvm_vcpu *vcpu)
goto out;
}
- vmx->vcpu.arch.rmode.active = 0;
+ vmx->vcpu.arch.rmode.vm86_active = 0;
vmx->soft_vnmi_blocked = 0;
@@ -2402,14 +2455,16 @@ static void enable_nmi_window(struct kvm_vcpu *vcpu)
vmcs_write32(CPU_BASED_VM_EXEC_CONTROL, cpu_based_vm_exec_control);
}
-static void vmx_inject_irq(struct kvm_vcpu *vcpu, int irq)
+static void vmx_inject_irq(struct kvm_vcpu *vcpu)
{
struct vcpu_vmx *vmx = to_vmx(vcpu);
+ uint32_t intr;
+ int irq = vcpu->arch.interrupt.nr;
KVMTRACE_1D(INJ_VIRQ, vcpu, (u32)irq, handler);
++vcpu->stat.irq_injections;
- if (vcpu->arch.rmode.active) {
+ if (vcpu->arch.rmode.vm86_active) {
vmx->rmode.irq.pending = true;
vmx->rmode.irq.vector = irq;
vmx->rmode.irq.rip = kvm_rip_read(vcpu);
@@ -2419,8 +2474,14 @@ static void vmx_inject_irq(struct kvm_vcpu *vcpu, int irq)
kvm_rip_write(vcpu, vmx->rmode.irq.rip - 1);
return;
}
- vmcs_write32(VM_ENTRY_INTR_INFO_FIELD,
- irq | INTR_TYPE_EXT_INTR | INTR_INFO_VALID_MASK);
+ intr = irq | INTR_INFO_VALID_MASK;
+ if (vcpu->arch.interrupt.soft) {
+ intr |= INTR_TYPE_SOFT_INTR;
+ vmcs_write32(VM_ENTRY_INSTRUCTION_LEN,
+ vmx->vcpu.arch.event_exit_inst_len);
+ } else
+ intr |= INTR_TYPE_EXT_INTR;
+ vmcs_write32(VM_ENTRY_INTR_INFO_FIELD, intr);
}
static void vmx_inject_nmi(struct kvm_vcpu *vcpu)
@@ -2441,7 +2502,7 @@ static void vmx_inject_nmi(struct kvm_vcpu *vcpu)
}
++vcpu->stat.nmi_injections;
- if (vcpu->arch.rmode.active) {
+ if (vcpu->arch.rmode.vm86_active) {
vmx->rmode.irq.pending = true;
vmx->rmode.irq.vector = NMI_VECTOR;
vmx->rmode.irq.rip = kvm_rip_read(vcpu);
@@ -2456,76 +2517,21 @@ static void vmx_inject_nmi(struct kvm_vcpu *vcpu)
INTR_TYPE_NMI_INTR | INTR_INFO_VALID_MASK | NMI_VECTOR);
}
-static void vmx_update_window_states(struct kvm_vcpu *vcpu)
+static int vmx_nmi_allowed(struct kvm_vcpu *vcpu)
{
- u32 guest_intr = vmcs_read32(GUEST_INTERRUPTIBILITY_INFO);
-
- vcpu->arch.nmi_window_open =
- !(guest_intr & (GUEST_INTR_STATE_STI |
- GUEST_INTR_STATE_MOV_SS |
- GUEST_INTR_STATE_NMI));
if (!cpu_has_virtual_nmis() && to_vmx(vcpu)->soft_vnmi_blocked)
- vcpu->arch.nmi_window_open = 0;
-
- vcpu->arch.interrupt_window_open =
- ((vmcs_readl(GUEST_RFLAGS) & X86_EFLAGS_IF) &&
- !(guest_intr & (GUEST_INTR_STATE_STI |
- GUEST_INTR_STATE_MOV_SS)));
-}
-
-static void kvm_do_inject_irq(struct kvm_vcpu *vcpu)
-{
- int word_index = __ffs(vcpu->arch.irq_summary);
- int bit_index = __ffs(vcpu->arch.irq_pending[word_index]);
- int irq = word_index * BITS_PER_LONG + bit_index;
+ return 0;
- clear_bit(bit_index, &vcpu->arch.irq_pending[word_index]);
- if (!vcpu->arch.irq_pending[word_index])
- clear_bit(word_index, &vcpu->arch.irq_summary);
- kvm_queue_interrupt(vcpu, irq);
+ return !(vmcs_read32(GUEST_INTERRUPTIBILITY_INFO) &
+ (GUEST_INTR_STATE_STI | GUEST_INTR_STATE_MOV_SS |
+ GUEST_INTR_STATE_NMI));
}
-static void do_interrupt_requests(struct kvm_vcpu *vcpu,
- struct kvm_run *kvm_run)
+static int vmx_interrupt_allowed(struct kvm_vcpu *vcpu)
{
- vmx_update_window_states(vcpu);
-
- if (vcpu->guest_debug & KVM_GUESTDBG_SINGLESTEP)
- vmcs_clear_bits(GUEST_INTERRUPTIBILITY_INFO,
- GUEST_INTR_STATE_STI |
- GUEST_INTR_STATE_MOV_SS);
-
- if (vcpu->arch.nmi_pending && !vcpu->arch.nmi_injected) {
- if (vcpu->arch.interrupt.pending) {
- enable_nmi_window(vcpu);
- } else if (vcpu->arch.nmi_window_open) {
- vcpu->arch.nmi_pending = false;
- vcpu->arch.nmi_injected = true;
- } else {
- enable_nmi_window(vcpu);
- return;
- }
- }
- if (vcpu->arch.nmi_injected) {
- vmx_inject_nmi(vcpu);
- if (vcpu->arch.nmi_pending)
- enable_nmi_window(vcpu);
- else if (vcpu->arch.irq_summary
- || kvm_run->request_interrupt_window)
- enable_irq_window(vcpu);
- return;
- }
-
- if (vcpu->arch.interrupt_window_open) {
- if (vcpu->arch.irq_summary && !vcpu->arch.interrupt.pending)
- kvm_do_inject_irq(vcpu);
-
- if (vcpu->arch.interrupt.pending)
- vmx_inject_irq(vcpu, vcpu->arch.interrupt.nr);
- }
- if (!vcpu->arch.interrupt_window_open &&
- (vcpu->arch.irq_summary || kvm_run->request_interrupt_window))
- enable_irq_window(vcpu);
+ return (vmcs_readl(GUEST_RFLAGS) & X86_EFLAGS_IF) &&
+ !(vmcs_read32(GUEST_INTERRUPTIBILITY_INFO) &
+ (GUEST_INTR_STATE_STI | GUEST_INTR_STATE_MOV_SS));
}
static int vmx_set_tss_addr(struct kvm *kvm, unsigned int addr)
@@ -2585,6 +2591,31 @@ static int handle_rmode_exception(struct kvm_vcpu *vcpu,
return 0;
}
+/*
+ * Trigger machine check on the host. We assume all the MSRs are already set up
+ * by the CPU and that we still run on the same CPU as the MCE occurred on.
+ * We pass a fake environment to the machine check handler because we want
+ * the guest to be always treated like user space, no matter what context
+ * it used internally.
+ */
+static void kvm_machine_check(void)
+{
+#if defined(CONFIG_X86_MCE) && defined(CONFIG_X86_64)
+ struct pt_regs regs = {
+ .cs = 3, /* Fake ring 3 no matter what the guest ran on */
+ .flags = X86_EFLAGS_IF,
+ };
+
+ do_machine_check(&regs, 0);
+#endif
+}
+
+static int handle_machine_check(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run)
+{
+ /* already handled by vcpu_run */
+ return 1;
+}
+
static int handle_exception(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run)
{
struct vcpu_vmx *vmx = to_vmx(vcpu);
@@ -2596,17 +2627,14 @@ static int handle_exception(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run)
vect_info = vmx->idt_vectoring_info;
intr_info = vmcs_read32(VM_EXIT_INTR_INFO);
+ if (is_machine_check(intr_info))
+ return handle_machine_check(vcpu, kvm_run);
+
if ((vect_info & VECTORING_INFO_VALID_MASK) &&
!is_page_fault(intr_info))
printk(KERN_ERR "%s: unexpected, vectoring info 0x%x "
"intr info 0x%x\n", __func__, vect_info, intr_info);
- if (!irqchip_in_kernel(vcpu->kvm) && is_external_interrupt(vect_info)) {
- int irq = vect_info & VECTORING_INFO_VECTOR_MASK;
- set_bit(irq, vcpu->arch.irq_pending);
- set_bit(irq / BITS_PER_LONG, &vcpu->arch.irq_summary);
- }
-
if ((intr_info & INTR_INFO_INTR_TYPE_MASK) == INTR_TYPE_NMI_INTR)
return 1; /* already handled by vmx_vcpu_run() */
@@ -2628,17 +2656,17 @@ static int handle_exception(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run)
error_code = vmcs_read32(VM_EXIT_INTR_ERROR_CODE);
if (is_page_fault(intr_info)) {
/* EPT won't cause page fault directly */
- if (vm_need_ept())
+ if (enable_ept)
BUG();
cr2 = vmcs_readl(EXIT_QUALIFICATION);
KVMTRACE_3D(PAGE_FAULT, vcpu, error_code, (u32)cr2,
(u32)((u64)cr2 >> 32), handler);
- if (vcpu->arch.interrupt.pending || vcpu->arch.exception.pending)
+ if (kvm_event_needs_reinjection(vcpu))
kvm_mmu_unprotect_page_virt(vcpu, cr2);
return kvm_mmu_page_fault(vcpu, cr2, error_code);
}
- if (vcpu->arch.rmode.active &&
+ if (vcpu->arch.rmode.vm86_active &&
handle_rmode_exception(vcpu, intr_info & INTR_INFO_VECTOR_MASK,
error_code)) {
if (vcpu->arch.halt_request) {
@@ -2753,13 +2781,18 @@ static int handle_cr(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run)
kvm_set_cr4(vcpu, kvm_register_read(vcpu, reg));
skip_emulated_instruction(vcpu);
return 1;
- case 8:
- kvm_set_cr8(vcpu, kvm_register_read(vcpu, reg));
- skip_emulated_instruction(vcpu);
- if (irqchip_in_kernel(vcpu->kvm))
- return 1;
- kvm_run->exit_reason = KVM_EXIT_SET_TPR;
- return 0;
+ case 8: {
+ u8 cr8_prev = kvm_get_cr8(vcpu);
+ u8 cr8 = kvm_register_read(vcpu, reg);
+ kvm_set_cr8(vcpu, cr8);
+ skip_emulated_instruction(vcpu);
+ if (irqchip_in_kernel(vcpu->kvm))
+ return 1;
+ if (cr8_prev <= cr8)
+ return 1;
+ kvm_run->exit_reason = KVM_EXIT_SET_TPR;
+ return 0;
+ }
};
break;
case 2: /* clts */
@@ -2957,8 +2990,9 @@ static int handle_interrupt_window(struct kvm_vcpu *vcpu,
* If the user space waits to inject interrupts, exit as soon as
* possible
*/
- if (kvm_run->request_interrupt_window &&
- !vcpu->arch.irq_summary) {
+ if (!irqchip_in_kernel(vcpu->kvm) &&
+ kvm_run->request_interrupt_window &&
+ !kvm_cpu_has_interrupt(vcpu)) {
kvm_run->exit_reason = KVM_EXIT_IRQ_WINDOW_OPEN;
return 0;
}
@@ -2980,7 +3014,7 @@ static int handle_vmcall(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run)
static int handle_invlpg(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run)
{
- u64 exit_qualification = vmcs_read64(EXIT_QUALIFICATION);
+ unsigned long exit_qualification = vmcs_readl(EXIT_QUALIFICATION);
kvm_mmu_invlpg(vcpu, exit_qualification);
skip_emulated_instruction(vcpu);
@@ -2996,11 +3030,11 @@ static int handle_wbinvd(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run)
static int handle_apic_access(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run)
{
- u64 exit_qualification;
+ unsigned long exit_qualification;
enum emulation_result er;
unsigned long offset;
- exit_qualification = vmcs_read64(EXIT_QUALIFICATION);
+ exit_qualification = vmcs_readl(EXIT_QUALIFICATION);
offset = exit_qualification & 0xffful;
er = emulate_instruction(vcpu, kvm_run, 0, 0, 0);
@@ -3019,22 +3053,41 @@ static int handle_task_switch(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run)
struct vcpu_vmx *vmx = to_vmx(vcpu);
unsigned long exit_qualification;
u16 tss_selector;
- int reason;
+ int reason, type, idt_v;
+
+ idt_v = (vmx->idt_vectoring_info & VECTORING_INFO_VALID_MASK);
+ type = (vmx->idt_vectoring_info & VECTORING_INFO_TYPE_MASK);
exit_qualification = vmcs_readl(EXIT_QUALIFICATION);
reason = (u32)exit_qualification >> 30;
- if (reason == TASK_SWITCH_GATE && vmx->vcpu.arch.nmi_injected &&
- (vmx->idt_vectoring_info & VECTORING_INFO_VALID_MASK) &&
- (vmx->idt_vectoring_info & VECTORING_INFO_TYPE_MASK)
- == INTR_TYPE_NMI_INTR) {
- vcpu->arch.nmi_injected = false;
- if (cpu_has_virtual_nmis())
- vmcs_set_bits(GUEST_INTERRUPTIBILITY_INFO,
- GUEST_INTR_STATE_NMI);
+ if (reason == TASK_SWITCH_GATE && idt_v) {
+ switch (type) {
+ case INTR_TYPE_NMI_INTR:
+ vcpu->arch.nmi_injected = false;
+ if (cpu_has_virtual_nmis())
+ vmcs_set_bits(GUEST_INTERRUPTIBILITY_INFO,
+ GUEST_INTR_STATE_NMI);
+ break;
+ case INTR_TYPE_EXT_INTR:
+ case INTR_TYPE_SOFT_INTR:
+ kvm_clear_interrupt_queue(vcpu);
+ break;
+ case INTR_TYPE_HARD_EXCEPTION:
+ case INTR_TYPE_SOFT_EXCEPTION:
+ kvm_clear_exception_queue(vcpu);
+ break;
+ default:
+ break;
+ }
}
tss_selector = exit_qualification;
+ if (!idt_v || (type != INTR_TYPE_HARD_EXCEPTION &&
+ type != INTR_TYPE_EXT_INTR &&
+ type != INTR_TYPE_NMI_INTR))
+ skip_emulated_instruction(vcpu);
+
if (!kvm_task_switch(vcpu, tss_selector, reason))
return 0;
@@ -3051,11 +3104,11 @@ static int handle_task_switch(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run)
static int handle_ept_violation(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run)
{
- u64 exit_qualification;
+ unsigned long exit_qualification;
gpa_t gpa;
int gla_validity;
- exit_qualification = vmcs_read64(EXIT_QUALIFICATION);
+ exit_qualification = vmcs_readl(EXIT_QUALIFICATION);
if (exit_qualification & (1 << 6)) {
printk(KERN_ERR "EPT: GPA exceeds GAW!\n");
@@ -3067,7 +3120,7 @@ static int handle_ept_violation(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run)
printk(KERN_ERR "EPT: Handling EPT violation failed!\n");
printk(KERN_ERR "EPT: GPA: 0x%lx, GVA: 0x%lx\n",
(long unsigned int)vmcs_read64(GUEST_PHYSICAL_ADDRESS),
- (long unsigned int)vmcs_read64(GUEST_LINEAR_ADDRESS));
+ vmcs_readl(GUEST_LINEAR_ADDRESS));
printk(KERN_ERR "EPT: Exit qualification is 0x%lx\n",
(long unsigned int)exit_qualification);
kvm_run->exit_reason = KVM_EXIT_UNKNOWN;
@@ -3150,6 +3203,7 @@ static int (*kvm_vmx_exit_handlers[])(struct kvm_vcpu *vcpu,
[EXIT_REASON_WBINVD] = handle_wbinvd,
[EXIT_REASON_TASK_SWITCH] = handle_task_switch,
[EXIT_REASON_EPT_VIOLATION] = handle_ept_violation,
+ [EXIT_REASON_MCE_DURING_VMENTRY] = handle_machine_check,
};
static const int kvm_vmx_max_exit_handlers =
@@ -3159,10 +3213,10 @@ static const int kvm_vmx_max_exit_handlers =
* The guest has exited. See if we can fix it or if we need userspace
* assistance.
*/
-static int kvm_handle_exit(struct kvm_run *kvm_run, struct kvm_vcpu *vcpu)
+static int vmx_handle_exit(struct kvm_run *kvm_run, struct kvm_vcpu *vcpu)
{
- u32 exit_reason = vmcs_read32(VM_EXIT_REASON);
struct vcpu_vmx *vmx = to_vmx(vcpu);
+ u32 exit_reason = vmx->exit_reason;
u32 vectoring_info = vmx->idt_vectoring_info;
KVMTRACE_3D(VMEXIT, vcpu, exit_reason, (u32)kvm_rip_read(vcpu),
@@ -3178,7 +3232,7 @@ static int kvm_handle_exit(struct kvm_run *kvm_run, struct kvm_vcpu *vcpu)
/* Access CR3 don't cause VMExit in paging mode, so we need
* to sync with guest real CR3. */
- if (vm_need_ept() && is_paging(vcpu)) {
+ if (enable_ept && is_paging(vcpu)) {
vcpu->arch.cr3 = vmcs_readl(GUEST_CR3);
ept_load_pdptrs(vcpu);
}
@@ -3199,9 +3253,8 @@ static int kvm_handle_exit(struct kvm_run *kvm_run, struct kvm_vcpu *vcpu)
__func__, vectoring_info, exit_reason);
if (unlikely(!cpu_has_virtual_nmis() && vmx->soft_vnmi_blocked)) {
- if (vcpu->arch.interrupt_window_open) {
+ if (vmx_interrupt_allowed(vcpu)) {
vmx->soft_vnmi_blocked = 0;
- vcpu->arch.nmi_window_open = 1;
} else if (vmx->vnmi_blocked_time > 1000000000LL &&
vcpu->arch.nmi_pending) {
/*
@@ -3214,7 +3267,6 @@ static int kvm_handle_exit(struct kvm_run *kvm_run, struct kvm_vcpu *vcpu)
"state on VCPU %d after 1 s timeout\n",
__func__, vcpu->vcpu_id);
vmx->soft_vnmi_blocked = 0;
- vmx->vcpu.arch.nmi_window_open = 1;
}
}
@@ -3228,122 +3280,107 @@ static int kvm_handle_exit(struct kvm_run *kvm_run, struct kvm_vcpu *vcpu)
return 0;
}
-static void update_tpr_threshold(struct kvm_vcpu *vcpu)
+static void update_cr8_intercept(struct kvm_vcpu *vcpu, int tpr, int irr)
{
- int max_irr, tpr;
-
- if (!vm_need_tpr_shadow(vcpu->kvm))
- return;
-
- if (!kvm_lapic_enabled(vcpu) ||
- ((max_irr = kvm_lapic_find_highest_irr(vcpu)) == -1)) {
+ if (irr == -1 || tpr < irr) {
vmcs_write32(TPR_THRESHOLD, 0);
return;
}
- tpr = (kvm_lapic_get_cr8(vcpu) & 0x0f) << 4;
- vmcs_write32(TPR_THRESHOLD, (max_irr > tpr) ? tpr >> 4 : max_irr >> 4);
+ vmcs_write32(TPR_THRESHOLD, irr);
}
static void vmx_complete_interrupts(struct vcpu_vmx *vmx)
{
u32 exit_intr_info;
- u32 idt_vectoring_info;
+ u32 idt_vectoring_info = vmx->idt_vectoring_info;
bool unblock_nmi;
u8 vector;
int type;
bool idtv_info_valid;
- u32 error;
exit_intr_info = vmcs_read32(VM_EXIT_INTR_INFO);
+
+ vmx->exit_reason = vmcs_read32(VM_EXIT_REASON);
+
+ /* Handle machine checks before interrupts are enabled */
+ if ((vmx->exit_reason == EXIT_REASON_MCE_DURING_VMENTRY)
+ || (vmx->exit_reason == EXIT_REASON_EXCEPTION_NMI
+ && is_machine_check(exit_intr_info)))
+ kvm_machine_check();
+
+ /* We need to handle NMIs before interrupts are enabled */
+ if ((exit_intr_info & INTR_INFO_INTR_TYPE_MASK) == INTR_TYPE_NMI_INTR &&
+ (exit_intr_info & INTR_INFO_VALID_MASK)) {
+ KVMTRACE_0D(NMI, &vmx->vcpu, handler);
+ asm("int $2");
+ }
+
+ idtv_info_valid = idt_vectoring_info & VECTORING_INFO_VALID_MASK;
+
if (cpu_has_virtual_nmis()) {
unblock_nmi = (exit_intr_info & INTR_INFO_UNBLOCK_NMI) != 0;
vector = exit_intr_info & INTR_INFO_VECTOR_MASK;
/*
- * SDM 3: 25.7.1.2
+ * SDM 3: 27.7.1.2 (September 2008)
* Re-set bit "block by NMI" before VM entry if vmexit caused by
* a guest IRET fault.
+ * SDM 3: 23.2.2 (September 2008)
+ * Bit 12 is undefined in any of the following cases:
+ * If the VM exit sets the valid bit in the IDT-vectoring
+ * information field.
+ * If the VM exit is due to a double fault.
*/
- if (unblock_nmi && vector != DF_VECTOR)
+ if ((exit_intr_info & INTR_INFO_VALID_MASK) && unblock_nmi &&
+ vector != DF_VECTOR && !idtv_info_valid)
vmcs_set_bits(GUEST_INTERRUPTIBILITY_INFO,
GUEST_INTR_STATE_NMI);
} else if (unlikely(vmx->soft_vnmi_blocked))
vmx->vnmi_blocked_time +=
ktime_to_ns(ktime_sub(ktime_get(), vmx->entry_time));
- idt_vectoring_info = vmx->idt_vectoring_info;
- idtv_info_valid = idt_vectoring_info & VECTORING_INFO_VALID_MASK;
+ vmx->vcpu.arch.nmi_injected = false;
+ kvm_clear_exception_queue(&vmx->vcpu);
+ kvm_clear_interrupt_queue(&vmx->vcpu);
+
+ if (!idtv_info_valid)
+ return;
+
vector = idt_vectoring_info & VECTORING_INFO_VECTOR_MASK;
type = idt_vectoring_info & VECTORING_INFO_TYPE_MASK;
- if (vmx->vcpu.arch.nmi_injected) {
+
+ switch (type) {
+ case INTR_TYPE_NMI_INTR:
+ vmx->vcpu.arch.nmi_injected = true;
/*
- * SDM 3: 25.7.1.2
- * Clear bit "block by NMI" before VM entry if a NMI delivery
- * faulted.
+ * SDM 3: 27.7.1.2 (September 2008)
+ * Clear bit "block by NMI" before VM entry if a NMI
+ * delivery faulted.
*/
- if (idtv_info_valid && type == INTR_TYPE_NMI_INTR)
- vmcs_clear_bits(GUEST_INTERRUPTIBILITY_INFO,
- GUEST_INTR_STATE_NMI);
- else
- vmx->vcpu.arch.nmi_injected = false;
- }
- kvm_clear_exception_queue(&vmx->vcpu);
- if (idtv_info_valid && (type == INTR_TYPE_HARD_EXCEPTION ||
- type == INTR_TYPE_SOFT_EXCEPTION)) {
+ vmcs_clear_bits(GUEST_INTERRUPTIBILITY_INFO,
+ GUEST_INTR_STATE_NMI);
+ break;
+ case INTR_TYPE_SOFT_EXCEPTION:
+ vmx->vcpu.arch.event_exit_inst_len =
+ vmcs_read32(VM_EXIT_INSTRUCTION_LEN);
+ /* fall through */
+ case INTR_TYPE_HARD_EXCEPTION:
if (idt_vectoring_info & VECTORING_INFO_DELIVER_CODE_MASK) {
- error = vmcs_read32(IDT_VECTORING_ERROR_CODE);
- kvm_queue_exception_e(&vmx->vcpu, vector, error);
+ u32 err = vmcs_read32(IDT_VECTORING_ERROR_CODE);
+ kvm_queue_exception_e(&vmx->vcpu, vector, err);
} else
kvm_queue_exception(&vmx->vcpu, vector);
- vmx->idt_vectoring_info = 0;
- }
- kvm_clear_interrupt_queue(&vmx->vcpu);
- if (idtv_info_valid && type == INTR_TYPE_EXT_INTR) {
- kvm_queue_interrupt(&vmx->vcpu, vector);
- vmx->idt_vectoring_info = 0;
- }
-}
-
-static void vmx_intr_assist(struct kvm_vcpu *vcpu)
-{
- update_tpr_threshold(vcpu);
-
- vmx_update_window_states(vcpu);
-
- if (vcpu->guest_debug & KVM_GUESTDBG_SINGLESTEP)
- vmcs_clear_bits(GUEST_INTERRUPTIBILITY_INFO,
- GUEST_INTR_STATE_STI |
- GUEST_INTR_STATE_MOV_SS);
-
- if (vcpu->arch.nmi_pending && !vcpu->arch.nmi_injected) {
- if (vcpu->arch.interrupt.pending) {
- enable_nmi_window(vcpu);
- } else if (vcpu->arch.nmi_window_open) {
- vcpu->arch.nmi_pending = false;
- vcpu->arch.nmi_injected = true;
- } else {
- enable_nmi_window(vcpu);
- return;
- }
- }
- if (vcpu->arch.nmi_injected) {
- vmx_inject_nmi(vcpu);
- if (vcpu->arch.nmi_pending)
- enable_nmi_window(vcpu);
- else if (kvm_cpu_has_interrupt(vcpu))
- enable_irq_window(vcpu);
- return;
- }
- if (!vcpu->arch.interrupt.pending && kvm_cpu_has_interrupt(vcpu)) {
- if (vcpu->arch.interrupt_window_open)
- kvm_queue_interrupt(vcpu, kvm_cpu_get_interrupt(vcpu));
- else
- enable_irq_window(vcpu);
- }
- if (vcpu->arch.interrupt.pending) {
- vmx_inject_irq(vcpu, vcpu->arch.interrupt.nr);
- if (kvm_cpu_has_interrupt(vcpu))
- enable_irq_window(vcpu);
+ break;
+ case INTR_TYPE_SOFT_INTR:
+ vmx->vcpu.arch.event_exit_inst_len =
+ vmcs_read32(VM_EXIT_INSTRUCTION_LEN);
+ /* fall through */
+ case INTR_TYPE_EXT_INTR:
+ kvm_queue_interrupt(&vmx->vcpu, vector,
+ type == INTR_TYPE_SOFT_INTR);
+ break;
+ default:
+ break;
}
}
@@ -3381,7 +3418,6 @@ static void fixup_rmode_irq(struct vcpu_vmx *vmx)
static void vmx_vcpu_run(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run)
{
struct vcpu_vmx *vmx = to_vmx(vcpu);
- u32 intr_info;
/* Record the guest's net vcpu time for enforced NMI injections. */
if (unlikely(!cpu_has_virtual_nmis() && vmx->soft_vnmi_blocked))
@@ -3505,20 +3541,9 @@ static void vmx_vcpu_run(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run)
if (vmx->rmode.irq.pending)
fixup_rmode_irq(vmx);
- vmx_update_window_states(vcpu);
-
asm("mov %0, %%ds; mov %0, %%es" : : "r"(__USER_DS));
vmx->launched = 1;
- intr_info = vmcs_read32(VM_EXIT_INTR_INFO);
-
- /* We need to handle NMIs before interrupts are enabled */
- if ((intr_info & INTR_INFO_INTR_TYPE_MASK) == INTR_TYPE_NMI_INTR &&
- (intr_info & INTR_INFO_VALID_MASK)) {
- KVMTRACE_0D(NMI, vcpu, handler);
- asm("int $2");
- }
-
vmx_complete_interrupts(vmx);
}
@@ -3593,7 +3618,7 @@ static struct kvm_vcpu *vmx_create_vcpu(struct kvm *kvm, unsigned int id)
if (alloc_apic_access_page(kvm) != 0)
goto free_vmcs;
- if (vm_need_ept())
+ if (enable_ept)
if (alloc_identity_pagetable(kvm) != 0)
goto free_vmcs;
@@ -3631,9 +3656,32 @@ static int get_ept_level(void)
return VMX_EPT_DEFAULT_GAW + 1;
}
-static int vmx_get_mt_mask_shift(void)
+static u64 vmx_get_mt_mask(struct kvm_vcpu *vcpu, gfn_t gfn, bool is_mmio)
{
- return VMX_EPT_MT_EPTE_SHIFT;
+ u64 ret;
+
+ /* For VT-d and EPT combination
+ * 1. MMIO: always map as UC
+ * 2. EPT with VT-d:
+ * a. VT-d without snooping control feature: can't guarantee the
+ * result, try to trust guest.
+ * b. VT-d with snooping control feature: snooping control feature of
+ * VT-d engine can guarantee the cache correctness. Just set it
+ * to WB to keep consistent with host. So the same as item 3.
+ * 3. EPT without VT-d: always map as WB and set IGMT=1 to keep
+ * consistent with host MTRR
+ */
+ if (is_mmio)
+ ret = MTRR_TYPE_UNCACHABLE << VMX_EPT_MT_EPTE_SHIFT;
+ else if (vcpu->kvm->arch.iommu_domain &&
+ !(vcpu->kvm->arch.iommu_flags & KVM_IOMMU_CACHE_COHERENCY))
+ ret = kvm_get_guest_memory_type(vcpu, gfn) <<
+ VMX_EPT_MT_EPTE_SHIFT;
+ else
+ ret = (MTRR_TYPE_WRBACK << VMX_EPT_MT_EPTE_SHIFT)
+ | VMX_EPT_IGMT_BIT;
+
+ return ret;
}
static struct kvm_x86_ops vmx_x86_ops = {
@@ -3644,7 +3692,7 @@ static struct kvm_x86_ops vmx_x86_ops = {
.check_processor_compatibility = vmx_check_processor_compat,
.hardware_enable = hardware_enable,
.hardware_disable = hardware_disable,
- .cpu_has_accelerated_tpr = cpu_has_vmx_virtualize_apic_accesses,
+ .cpu_has_accelerated_tpr = report_flexpriority,
.vcpu_create = vmx_create_vcpu,
.vcpu_free = vmx_free_vcpu,
@@ -3678,78 +3726,82 @@ static struct kvm_x86_ops vmx_x86_ops = {
.tlb_flush = vmx_flush_tlb,
.run = vmx_vcpu_run,
- .handle_exit = kvm_handle_exit,
+ .handle_exit = vmx_handle_exit,
.skip_emulated_instruction = skip_emulated_instruction,
+ .set_interrupt_shadow = vmx_set_interrupt_shadow,
+ .get_interrupt_shadow = vmx_get_interrupt_shadow,
.patch_hypercall = vmx_patch_hypercall,
- .get_irq = vmx_get_irq,
.set_irq = vmx_inject_irq,
+ .set_nmi = vmx_inject_nmi,
.queue_exception = vmx_queue_exception,
- .exception_injected = vmx_exception_injected,
- .inject_pending_irq = vmx_intr_assist,
- .inject_pending_vectors = do_interrupt_requests,
+ .interrupt_allowed = vmx_interrupt_allowed,
+ .nmi_allowed = vmx_nmi_allowed,
+ .enable_nmi_window = enable_nmi_window,
+ .enable_irq_window = enable_irq_window,
+ .update_cr8_intercept = update_cr8_intercept,
.set_tss_addr = vmx_set_tss_addr,
.get_tdp_level = get_ept_level,
- .get_mt_mask_shift = vmx_get_mt_mask_shift,
+ .get_mt_mask = vmx_get_mt_mask,
};
static int __init vmx_init(void)
{
- void *va;
int r;
- vmx_io_bitmap_a = alloc_page(GFP_KERNEL | __GFP_HIGHMEM);
+ vmx_io_bitmap_a = (unsigned long *)__get_free_page(GFP_KERNEL);
if (!vmx_io_bitmap_a)
return -ENOMEM;
- vmx_io_bitmap_b = alloc_page(GFP_KERNEL | __GFP_HIGHMEM);
+ vmx_io_bitmap_b = (unsigned long *)__get_free_page(GFP_KERNEL);
if (!vmx_io_bitmap_b) {
r = -ENOMEM;
goto out;
}
- vmx_msr_bitmap = alloc_page(GFP_KERNEL | __GFP_HIGHMEM);
- if (!vmx_msr_bitmap) {
+ vmx_msr_bitmap_legacy = (unsigned long *)__get_free_page(GFP_KERNEL);
+ if (!vmx_msr_bitmap_legacy) {
r = -ENOMEM;
goto out1;
}
+ vmx_msr_bitmap_longmode = (unsigned long *)__get_free_page(GFP_KERNEL);
+ if (!vmx_msr_bitmap_longmode) {
+ r = -ENOMEM;
+ goto out2;
+ }
+
/*
* Allow direct access to the PC debug port (it is often used for I/O
* delays, but the vmexits simply slow things down).
*/
- va = kmap(vmx_io_bitmap_a);
- memset(va, 0xff, PAGE_SIZE);
- clear_bit(0x80, va);
- kunmap(vmx_io_bitmap_a);
+ memset(vmx_io_bitmap_a, 0xff, PAGE_SIZE);
+ clear_bit(0x80, vmx_io_bitmap_a);
- va = kmap(vmx_io_bitmap_b);
- memset(va, 0xff, PAGE_SIZE);
- kunmap(vmx_io_bitmap_b);
+ memset(vmx_io_bitmap_b, 0xff, PAGE_SIZE);
- va = kmap(vmx_msr_bitmap);
- memset(va, 0xff, PAGE_SIZE);
- kunmap(vmx_msr_bitmap);
+ memset(vmx_msr_bitmap_legacy, 0xff, PAGE_SIZE);
+ memset(vmx_msr_bitmap_longmode, 0xff, PAGE_SIZE);
set_bit(0, vmx_vpid_bitmap); /* 0 is reserved for host */
r = kvm_init(&vmx_x86_ops, sizeof(struct vcpu_vmx), THIS_MODULE);
if (r)
- goto out2;
+ goto out3;
- vmx_disable_intercept_for_msr(vmx_msr_bitmap, MSR_FS_BASE);
- vmx_disable_intercept_for_msr(vmx_msr_bitmap, MSR_GS_BASE);
- vmx_disable_intercept_for_msr(vmx_msr_bitmap, MSR_IA32_SYSENTER_CS);
- vmx_disable_intercept_for_msr(vmx_msr_bitmap, MSR_IA32_SYSENTER_ESP);
- vmx_disable_intercept_for_msr(vmx_msr_bitmap, MSR_IA32_SYSENTER_EIP);
+ vmx_disable_intercept_for_msr(MSR_FS_BASE, false);
+ vmx_disable_intercept_for_msr(MSR_GS_BASE, false);
+ vmx_disable_intercept_for_msr(MSR_KERNEL_GS_BASE, true);
+ vmx_disable_intercept_for_msr(MSR_IA32_SYSENTER_CS, false);
+ vmx_disable_intercept_for_msr(MSR_IA32_SYSENTER_ESP, false);
+ vmx_disable_intercept_for_msr(MSR_IA32_SYSENTER_EIP, false);
- if (vm_need_ept()) {
+ if (enable_ept) {
bypass_guest_pf = 0;
kvm_mmu_set_base_ptes(VMX_EPT_READABLE_MASK |
VMX_EPT_WRITABLE_MASK);
kvm_mmu_set_mask_ptes(0ull, 0ull, 0ull, 0ull,
- VMX_EPT_EXECUTABLE_MASK,
- VMX_EPT_DEFAULT_MT << VMX_EPT_MT_EPTE_SHIFT);
+ VMX_EPT_EXECUTABLE_MASK);
kvm_enable_tdp();
} else
kvm_disable_tdp();
@@ -3761,20 +3813,23 @@ static int __init vmx_init(void)
return 0;
+out3:
+ free_page((unsigned long)vmx_msr_bitmap_longmode);
out2:
- __free_page(vmx_msr_bitmap);
+ free_page((unsigned long)vmx_msr_bitmap_legacy);
out1:
- __free_page(vmx_io_bitmap_b);
+ free_page((unsigned long)vmx_io_bitmap_b);
out:
- __free_page(vmx_io_bitmap_a);
+ free_page((unsigned long)vmx_io_bitmap_a);
return r;
}
static void __exit vmx_exit(void)
{
- __free_page(vmx_msr_bitmap);
- __free_page(vmx_io_bitmap_b);
- __free_page(vmx_io_bitmap_a);
+ free_page((unsigned long)vmx_msr_bitmap_legacy);
+ free_page((unsigned long)vmx_msr_bitmap_longmode);
+ free_page((unsigned long)vmx_io_bitmap_b);
+ free_page((unsigned long)vmx_io_bitmap_a);
kvm_exit();
}
diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c
index 3944e91..249540f 100644
--- a/arch/x86/kvm/x86.c
+++ b/arch/x86/kvm/x86.c
@@ -91,7 +91,6 @@ struct kvm_stats_debugfs_item debugfs_entries[] = {
{ "halt_wakeup", VCPU_STAT(halt_wakeup) },
{ "hypercalls", VCPU_STAT(hypercalls) },
{ "request_irq", VCPU_STAT(request_irq_exits) },
- { "request_nmi", VCPU_STAT(request_nmi_exits) },
{ "irq_exits", VCPU_STAT(irq_exits) },
{ "host_state_reload", VCPU_STAT(host_state_reload) },
{ "efer_reload", VCPU_STAT(efer_reload) },
@@ -108,7 +107,6 @@ struct kvm_stats_debugfs_item debugfs_entries[] = {
{ "mmu_recycled", VM_STAT(mmu_recycled) },
{ "mmu_cache_miss", VM_STAT(mmu_cache_miss) },
{ "mmu_unsync", VM_STAT(mmu_unsync) },
- { "mmu_unsync_global", VM_STAT(mmu_unsync_global) },
{ "remote_tlb_flush", VM_STAT(remote_tlb_flush) },
{ "largepages", VM_STAT(lpages) },
{ NULL }
@@ -234,7 +232,8 @@ int load_pdptrs(struct kvm_vcpu *vcpu, unsigned long cr3)
goto out;
}
for (i = 0; i < ARRAY_SIZE(pdpte); ++i) {
- if ((pdpte[i] & 1) && (pdpte[i] & 0xfffffff0000001e6ull)) {
+ if (is_present_pte(pdpte[i]) &&
+ (pdpte[i] & vcpu->arch.mmu.rsvd_bits_mask[0][2])) {
ret = 0;
goto out;
}
@@ -321,7 +320,6 @@ void kvm_set_cr0(struct kvm_vcpu *vcpu, unsigned long cr0)
kvm_x86_ops->set_cr0(vcpu, cr0);
vcpu->arch.cr0 = cr0;
- kvm_mmu_sync_global(vcpu);
kvm_mmu_reset_context(vcpu);
return;
}
@@ -370,7 +368,6 @@ void kvm_set_cr4(struct kvm_vcpu *vcpu, unsigned long cr4)
kvm_x86_ops->set_cr4(vcpu, cr4);
vcpu->arch.cr4 = cr4;
vcpu->arch.mmu.base_role.cr4_pge = (cr4 & X86_CR4_PGE) && !tdp_enabled;
- kvm_mmu_sync_global(vcpu);
kvm_mmu_reset_context(vcpu);
}
EXPORT_SYMBOL_GPL(kvm_set_cr4);
@@ -523,6 +520,9 @@ static void set_efer(struct kvm_vcpu *vcpu, u64 efer)
efer |= vcpu->arch.shadow_efer & EFER_LMA;
vcpu->arch.shadow_efer = efer;
+
+ vcpu->arch.mmu.base_role.nxe = (efer & EFER_NX) && !tdp_enabled;
+ kvm_mmu_reset_context(vcpu);
}
void kvm_enable_efer_bits(u64 mask)
@@ -630,14 +630,17 @@ static void kvm_write_guest_time(struct kvm_vcpu *v)
unsigned long flags;
struct kvm_vcpu_arch *vcpu = &v->arch;
void *shared_kaddr;
+ unsigned long this_tsc_khz;
if ((!vcpu->time_page))
return;
- if (unlikely(vcpu->hv_clock_tsc_khz != __get_cpu_var(cpu_tsc_khz))) {
- kvm_set_time_scale(__get_cpu_var(cpu_tsc_khz), &vcpu->hv_clock);
- vcpu->hv_clock_tsc_khz = __get_cpu_var(cpu_tsc_khz);
+ this_tsc_khz = get_cpu_var(cpu_tsc_khz);
+ if (unlikely(vcpu->hv_clock_tsc_khz != this_tsc_khz)) {
+ kvm_set_time_scale(this_tsc_khz, &vcpu->hv_clock);
+ vcpu->hv_clock_tsc_khz = this_tsc_khz;
}
+ put_cpu_var(cpu_tsc_khz);
/* Keep irq disabled to prevent changes to the clock */
local_irq_save(flags);
@@ -893,6 +896,8 @@ int kvm_get_msr_common(struct kvm_vcpu *vcpu, u32 msr, u64 *pdata)
case MSR_IA32_LASTINTFROMIP:
case MSR_IA32_LASTINTTOIP:
case MSR_VM_HSAVE_PA:
+ case MSR_P6_EVNTSEL0:
+ case MSR_P6_EVNTSEL1:
data = 0;
break;
case MSR_MTRRcap:
@@ -1024,6 +1029,7 @@ int kvm_dev_ioctl_check_extension(long ext)
case KVM_CAP_SYNC_MMU:
case KVM_CAP_REINJECT_CONTROL:
case KVM_CAP_IRQ_INJECT_STATUS:
+ case KVM_CAP_ASSIGN_DEV_IRQ:
r = 1;
break;
case KVM_CAP_COALESCED_MMIO:
@@ -1241,41 +1247,53 @@ static void do_cpuid_1_ent(struct kvm_cpuid_entry2 *entry, u32 function,
entry->flags = 0;
}
+#define F(x) bit(X86_FEATURE_##x)
+
static void do_cpuid_ent(struct kvm_cpuid_entry2 *entry, u32 function,
u32 index, int *nent, int maxnent)
{
- const u32 kvm_supported_word0_x86_features = bit(X86_FEATURE_FPU) |
- bit(X86_FEATURE_VME) | bit(X86_FEATURE_DE) |
- bit(X86_FEATURE_PSE) | bit(X86_FEATURE_TSC) |
- bit(X86_FEATURE_MSR) | bit(X86_FEATURE_PAE) |
- bit(X86_FEATURE_CX8) | bit(X86_FEATURE_APIC) |
- bit(X86_FEATURE_SEP) | bit(X86_FEATURE_PGE) |
- bit(X86_FEATURE_CMOV) | bit(X86_FEATURE_PSE36) |
- bit(X86_FEATURE_CLFLSH) | bit(X86_FEATURE_MMX) |
- bit(X86_FEATURE_FXSR) | bit(X86_FEATURE_XMM) |
- bit(X86_FEATURE_XMM2) | bit(X86_FEATURE_SELFSNOOP);
- const u32 kvm_supported_word1_x86_features = bit(X86_FEATURE_FPU) |
- bit(X86_FEATURE_VME) | bit(X86_FEATURE_DE) |
- bit(X86_FEATURE_PSE) | bit(X86_FEATURE_TSC) |
- bit(X86_FEATURE_MSR) | bit(X86_FEATURE_PAE) |
- bit(X86_FEATURE_CX8) | bit(X86_FEATURE_APIC) |
- bit(X86_FEATURE_PGE) |
- bit(X86_FEATURE_CMOV) | bit(X86_FEATURE_PSE36) |
- bit(X86_FEATURE_MMX) | bit(X86_FEATURE_FXSR) |
- bit(X86_FEATURE_SYSCALL) |
- (is_efer_nx() ? bit(X86_FEATURE_NX) : 0) |
+ unsigned f_nx = is_efer_nx() ? F(NX) : 0;
#ifdef CONFIG_X86_64
- bit(X86_FEATURE_LM) |
+ unsigned f_lm = F(LM);
+#else
+ unsigned f_lm = 0;
#endif
- bit(X86_FEATURE_FXSR_OPT) |
- bit(X86_FEATURE_MMXEXT) |
- bit(X86_FEATURE_3DNOWEXT) |
- bit(X86_FEATURE_3DNOW);
- const u32 kvm_supported_word3_x86_features =
- bit(X86_FEATURE_XMM3) | bit(X86_FEATURE_CX16);
+
+ /* cpuid 1.edx */
+ const u32 kvm_supported_word0_x86_features =
+ F(FPU) | F(VME) | F(DE) | F(PSE) |
+ F(TSC) | F(MSR) | F(PAE) | F(MCE) |
+ F(CX8) | F(APIC) | 0 /* Reserved */ | F(SEP) |
+ F(MTRR) | F(PGE) | F(MCA) | F(CMOV) |
+ F(PAT) | F(PSE36) | 0 /* PSN */ | F(CLFLSH) |
+ 0 /* Reserved, DS, ACPI */ | F(MMX) |
+ F(FXSR) | F(XMM) | F(XMM2) | F(SELFSNOOP) |
+ 0 /* HTT, TM, Reserved, PBE */;
+ /* cpuid 0x80000001.edx */
+ const u32 kvm_supported_word1_x86_features =
+ F(FPU) | F(VME) | F(DE) | F(PSE) |
+ F(TSC) | F(MSR) | F(PAE) | F(MCE) |
+ F(CX8) | F(APIC) | 0 /* Reserved */ | F(SYSCALL) |
+ F(MTRR) | F(PGE) | F(MCA) | F(CMOV) |
+ F(PAT) | F(PSE36) | 0 /* Reserved */ |
+ f_nx | 0 /* Reserved */ | F(MMXEXT) | F(MMX) |
+ F(FXSR) | F(FXSR_OPT) | 0 /* GBPAGES */ | 0 /* RDTSCP */ |
+ 0 /* Reserved */ | f_lm | F(3DNOWEXT) | F(3DNOW);
+ /* cpuid 1.ecx */
+ const u32 kvm_supported_word4_x86_features =
+ F(XMM3) | 0 /* Reserved, DTES64, MONITOR */ |
+ 0 /* DS-CPL, VMX, SMX, EST */ |
+ 0 /* TM2 */ | F(SSSE3) | 0 /* CNXT-ID */ | 0 /* Reserved */ |
+ 0 /* Reserved */ | F(CX16) | 0 /* xTPR Update, PDCM */ |
+ 0 /* Reserved, DCA */ | F(XMM4_1) |
+ F(XMM4_2) | 0 /* x2APIC */ | F(MOVBE) | F(POPCNT) |
+ 0 /* Reserved, XSAVE, OSXSAVE */;
+ /* cpuid 0x80000001.ecx */
const u32 kvm_supported_word6_x86_features =
- bit(X86_FEATURE_LAHF_LM) | bit(X86_FEATURE_CMP_LEGACY) |
- bit(X86_FEATURE_SVM);
+ F(LAHF_LM) | F(CMP_LEGACY) | F(SVM) | 0 /* ExtApicSpace */ |
+ F(CR8_LEGACY) | F(ABM) | F(SSE4A) | F(MISALIGNSSE) |
+ F(3DNOWPREFETCH) | 0 /* OSVW */ | 0 /* IBS */ | F(SSE5) |
+ 0 /* SKINIT */ | 0 /* WDT */;
/* all calls to cpuid_count() should be made on the same cpu */
get_cpu();
@@ -1288,7 +1306,7 @@ static void do_cpuid_ent(struct kvm_cpuid_entry2 *entry, u32 function,
break;
case 1:
entry->edx &= kvm_supported_word0_x86_features;
- entry->ecx &= kvm_supported_word3_x86_features;
+ entry->ecx &= kvm_supported_word4_x86_features;
break;
/* function 2 entries are STATEFUL. That is, repeated cpuid commands
* may return different values. This forces us to get_cpu() before
@@ -1350,6 +1368,8 @@ static void do_cpuid_ent(struct kvm_cpuid_entry2 *entry, u32 function,
put_cpu();
}
+#undef F
+
static int kvm_dev_ioctl_get_supported_cpuid(struct kvm_cpuid2 *cpuid,
struct kvm_cpuid_entry2 __user *entries)
{
@@ -1421,8 +1441,7 @@ static int kvm_vcpu_ioctl_interrupt(struct kvm_vcpu *vcpu,
return -ENXIO;
vcpu_load(vcpu);
- set_bit(irq->irq, vcpu->arch.irq_pending);
- set_bit(irq->irq / BITS_PER_LONG, &vcpu->arch.irq_summary);
+ kvm_queue_interrupt(vcpu, irq->irq, false);
vcpu_put(vcpu);
@@ -1584,8 +1603,7 @@ long kvm_arch_vcpu_ioctl(struct file *filp,
r = -EINVAL;
}
out:
- if (lapic)
- kfree(lapic);
+ kfree(lapic);
return r;
}
@@ -1606,10 +1624,12 @@ static int kvm_vm_ioctl_set_nr_mmu_pages(struct kvm *kvm,
return -EINVAL;
down_write(&kvm->slots_lock);
+ spin_lock(&kvm->mmu_lock);
kvm_mmu_change_mmu_pages(kvm, kvm_nr_mmu_pages);
kvm->arch.n_requested_mmu_pages = kvm_nr_mmu_pages;
+ spin_unlock(&kvm->mmu_lock);
up_write(&kvm->slots_lock);
return 0;
}
@@ -1785,7 +1805,9 @@ int kvm_vm_ioctl_get_dirty_log(struct kvm *kvm,
/* If nothing is dirty, don't bother messing with page tables. */
if (is_dirty) {
+ spin_lock(&kvm->mmu_lock);
kvm_mmu_slot_remove_write_access(kvm, log->slot);
+ spin_unlock(&kvm->mmu_lock);
kvm_flush_remote_tlbs(kvm);
memslot = &kvm->memslots[log->slot];
n = ALIGN(memslot->npages, BITS_PER_LONG) / 8;
@@ -2360,7 +2382,7 @@ int emulate_instruction(struct kvm_vcpu *vcpu,
u16 error_code,
int emulation_type)
{
- int r;
+ int r, shadow_mask;
struct decode_cache *c;
kvm_clear_exception_queue(vcpu);
@@ -2408,7 +2430,16 @@ int emulate_instruction(struct kvm_vcpu *vcpu,
}
}
+ if (emulation_type & EMULTYPE_SKIP) {
+ kvm_rip_write(vcpu, vcpu->arch.emulate_ctxt.decode.eip);
+ return EMULATE_DONE;
+ }
+
r = x86_emulate_insn(&vcpu->arch.emulate_ctxt, &emulate_ops);
+ shadow_mask = vcpu->arch.emulate_ctxt.interruptibility;
+
+ if (r == 0)
+ kvm_x86_ops->set_interrupt_shadow(vcpu, shadow_mask);
if (vcpu->arch.pio.string)
return EMULATE_DO_MMIO;
@@ -2761,7 +2792,7 @@ int kvm_arch_init(void *opaque)
kvm_mmu_set_nonpresent_ptes(0ull, 0ull);
kvm_mmu_set_base_ptes(PT_PRESENT_MASK);
kvm_mmu_set_mask_ptes(PT_USER_MASK, PT_ACCESSED_MASK,
- PT_DIRTY_MASK, PT64_NX_MASK, 0, 0);
+ PT_DIRTY_MASK, PT64_NX_MASK, 0);
for_each_possible_cpu(cpu)
per_cpu(cpu_tsc_khz, cpu) = tsc_khz;
@@ -3012,6 +3043,16 @@ struct kvm_cpuid_entry2 *kvm_find_cpuid_entry(struct kvm_vcpu *vcpu,
return best;
}
+int cpuid_maxphyaddr(struct kvm_vcpu *vcpu)
+{
+ struct kvm_cpuid_entry2 *best;
+
+ best = kvm_find_cpuid_entry(vcpu, 0x80000008, 0);
+ if (best)
+ return best->eax & 0xff;
+ return 36;
+}
+
void kvm_emulate_cpuid(struct kvm_vcpu *vcpu)
{
u32 function, index;
@@ -3048,10 +3089,9 @@ EXPORT_SYMBOL_GPL(kvm_emulate_cpuid);
static int dm_request_for_irq_injection(struct kvm_vcpu *vcpu,
struct kvm_run *kvm_run)
{
- return (!vcpu->arch.irq_summary &&
+ return (!irqchip_in_kernel(vcpu->kvm) && !kvm_cpu_has_interrupt(vcpu) &&
kvm_run->request_interrupt_window &&
- vcpu->arch.interrupt_window_open &&
- (kvm_x86_ops->get_rflags(vcpu) & X86_EFLAGS_IF));
+ kvm_arch_interrupt_allowed(vcpu));
}
static void post_kvm_run_save(struct kvm_vcpu *vcpu,
@@ -3064,8 +3104,9 @@ static void post_kvm_run_save(struct kvm_vcpu *vcpu,
kvm_run->ready_for_interrupt_injection = 1;
else
kvm_run->ready_for_interrupt_injection =
- (vcpu->arch.interrupt_window_open &&
- vcpu->arch.irq_summary == 0);
+ kvm_arch_interrupt_allowed(vcpu) &&
+ !kvm_cpu_has_interrupt(vcpu) &&
+ !kvm_event_needs_reinjection(vcpu);
}
static void vapic_enter(struct kvm_vcpu *vcpu)
@@ -3094,9 +3135,63 @@ static void vapic_exit(struct kvm_vcpu *vcpu)
up_read(&vcpu->kvm->slots_lock);
}
+static void update_cr8_intercept(struct kvm_vcpu *vcpu)
+{
+ int max_irr, tpr;
+
+ if (!kvm_x86_ops->update_cr8_intercept)
+ return;
+
+ if (!vcpu->arch.apic->vapic_addr)
+ max_irr = kvm_lapic_find_highest_irr(vcpu);
+ else
+ max_irr = -1;
+
+ if (max_irr != -1)
+ max_irr >>= 4;
+
+ tpr = kvm_lapic_get_cr8(vcpu);
+
+ kvm_x86_ops->update_cr8_intercept(vcpu, tpr, max_irr);
+}
+
+static void inject_pending_irq(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run)
+{
+ if (vcpu->guest_debug & KVM_GUESTDBG_SINGLESTEP)
+ kvm_x86_ops->set_interrupt_shadow(vcpu, 0);
+
+ /* try to reinject previous events if any */
+ if (vcpu->arch.nmi_injected) {
+ kvm_x86_ops->set_nmi(vcpu);
+ return;
+ }
+
+ if (vcpu->arch.interrupt.pending) {
+ kvm_x86_ops->set_irq(vcpu);
+ return;
+ }
+
+ /* try to inject new event if pending */
+ if (vcpu->arch.nmi_pending) {
+ if (kvm_x86_ops->nmi_allowed(vcpu)) {
+ vcpu->arch.nmi_pending = false;
+ vcpu->arch.nmi_injected = true;
+ kvm_x86_ops->set_nmi(vcpu);
+ }
+ } else if (kvm_cpu_has_interrupt(vcpu)) {
+ if (kvm_x86_ops->interrupt_allowed(vcpu)) {
+ kvm_queue_interrupt(vcpu, kvm_cpu_get_interrupt(vcpu),
+ false);
+ kvm_x86_ops->set_irq(vcpu);
+ }
+ }
+}
+
static int vcpu_enter_guest(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run)
{
int r;
+ bool req_int_win = !irqchip_in_kernel(vcpu->kvm) &&
+ kvm_run->request_interrupt_window;
if (vcpu->requests)
if (test_and_clear_bit(KVM_REQ_MMU_RELOAD, &vcpu->requests))
@@ -3128,9 +3223,6 @@ static int vcpu_enter_guest(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run)
}
}
- clear_bit(KVM_REQ_PENDING_TIMER, &vcpu->requests);
- kvm_inject_pending_timer_irqs(vcpu);
-
preempt_disable();
kvm_x86_ops->prepare_guest_switch(vcpu);
@@ -3138,6 +3230,9 @@ static int vcpu_enter_guest(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run)
local_irq_disable();
+ clear_bit(KVM_REQ_KICK, &vcpu->requests);
+ smp_mb__after_clear_bit();
+
if (vcpu->requests || need_resched() || signal_pending(current)) {
local_irq_enable();
preempt_enable();
@@ -3145,21 +3240,21 @@ static int vcpu_enter_guest(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run)
goto out;
}
- vcpu->guest_mode = 1;
- /*
- * Make sure that guest_mode assignment won't happen after
- * testing the pending IRQ vector bitmap.
- */
- smp_wmb();
-
if (vcpu->arch.exception.pending)
__queue_exception(vcpu);
- else if (irqchip_in_kernel(vcpu->kvm))
- kvm_x86_ops->inject_pending_irq(vcpu);
else
- kvm_x86_ops->inject_pending_vectors(vcpu, kvm_run);
+ inject_pending_irq(vcpu, kvm_run);
- kvm_lapic_sync_to_vapic(vcpu);
+ /* enable NMI/IRQ window open exits if needed */
+ if (vcpu->arch.nmi_pending)
+ kvm_x86_ops->enable_nmi_window(vcpu);
+ else if (kvm_cpu_has_interrupt(vcpu) || req_int_win)
+ kvm_x86_ops->enable_irq_window(vcpu);
+
+ if (kvm_lapic_enabled(vcpu)) {
+ update_cr8_intercept(vcpu);
+ kvm_lapic_sync_to_vapic(vcpu);
+ }
up_read(&vcpu->kvm->slots_lock);
@@ -3193,7 +3288,7 @@ static int vcpu_enter_guest(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run)
set_debugreg(vcpu->arch.host_dr6, 6);
set_debugreg(vcpu->arch.host_dr7, 7);
- vcpu->guest_mode = 0;
+ set_bit(KVM_REQ_KICK, &vcpu->requests);
local_irq_enable();
++vcpu->stat.exits;
@@ -3220,8 +3315,6 @@ static int vcpu_enter_guest(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run)
profile_hit(KVM_PROFILING, (void *)rip);
}
- if (vcpu->arch.exception.pending && kvm_x86_ops->exception_injected(vcpu))
- vcpu->arch.exception.pending = false;
kvm_lapic_sync_from_vapic(vcpu);
@@ -3230,6 +3323,7 @@ out:
return r;
}
+
static int __vcpu_run(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run)
{
int r;
@@ -3256,29 +3350,42 @@ static int __vcpu_run(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run)
kvm_vcpu_block(vcpu);
down_read(&vcpu->kvm->slots_lock);
if (test_and_clear_bit(KVM_REQ_UNHALT, &vcpu->requests))
- if (vcpu->arch.mp_state == KVM_MP_STATE_HALTED)
+ {
+ switch(vcpu->arch.mp_state) {
+ case KVM_MP_STATE_HALTED:
vcpu->arch.mp_state =
- KVM_MP_STATE_RUNNABLE;
- if (vcpu->arch.mp_state != KVM_MP_STATE_RUNNABLE)
- r = -EINTR;
+ KVM_MP_STATE_RUNNABLE;
+ case KVM_MP_STATE_RUNNABLE:
+ break;
+ case KVM_MP_STATE_SIPI_RECEIVED:
+ default:
+ r = -EINTR;
+ break;
+ }
+ }
}
- if (r > 0) {
- if (dm_request_for_irq_injection(vcpu, kvm_run)) {
- r = -EINTR;
- kvm_run->exit_reason = KVM_EXIT_INTR;
- ++vcpu->stat.request_irq_exits;
- }
- if (signal_pending(current)) {
- r = -EINTR;
- kvm_run->exit_reason = KVM_EXIT_INTR;
- ++vcpu->stat.signal_exits;
- }
- if (need_resched()) {
- up_read(&vcpu->kvm->slots_lock);
- kvm_resched(vcpu);
- down_read(&vcpu->kvm->slots_lock);
- }
+ if (r <= 0)
+ break;
+
+ clear_bit(KVM_REQ_PENDING_TIMER, &vcpu->requests);
+ if (kvm_cpu_has_pending_timer(vcpu))
+ kvm_inject_pending_timer_irqs(vcpu);
+
+ if (dm_request_for_irq_injection(vcpu, kvm_run)) {
+ r = -EINTR;
+ kvm_run->exit_reason = KVM_EXIT_INTR;
+ ++vcpu->stat.request_irq_exits;
+ }
+ if (signal_pending(current)) {
+ r = -EINTR;
+ kvm_run->exit_reason = KVM_EXIT_INTR;
+ ++vcpu->stat.signal_exits;
+ }
+ if (need_resched()) {
+ up_read(&vcpu->kvm->slots_lock);
+ kvm_resched(vcpu);
+ down_read(&vcpu->kvm->slots_lock);
}
}
@@ -3442,7 +3549,6 @@ int kvm_arch_vcpu_ioctl_get_sregs(struct kvm_vcpu *vcpu,
struct kvm_sregs *sregs)
{
struct descriptor_table dt;
- int pending_vec;
vcpu_load(vcpu);
@@ -3472,16 +3578,11 @@ int kvm_arch_vcpu_ioctl_get_sregs(struct kvm_vcpu *vcpu,
sregs->efer = vcpu->arch.shadow_efer;
sregs->apic_base = kvm_get_apic_base(vcpu);
- if (irqchip_in_kernel(vcpu->kvm)) {
- memset(sregs->interrupt_bitmap, 0,
- sizeof sregs->interrupt_bitmap);
- pending_vec = kvm_x86_ops->get_irq(vcpu);
- if (pending_vec >= 0)
- set_bit(pending_vec,
- (unsigned long *)sregs->interrupt_bitmap);
- } else
- memcpy(sregs->interrupt_bitmap, vcpu->arch.irq_pending,
- sizeof sregs->interrupt_bitmap);
+ memset(sregs->interrupt_bitmap, 0, sizeof sregs->interrupt_bitmap);
+
+ if (vcpu->arch.interrupt.pending && !vcpu->arch.interrupt.soft)
+ set_bit(vcpu->arch.interrupt.nr,
+ (unsigned long *)sregs->interrupt_bitmap);
vcpu_put(vcpu);
@@ -3688,7 +3789,6 @@ static void save_state_to_tss32(struct kvm_vcpu *vcpu,
tss->fs = get_segment_selector(vcpu, VCPU_SREG_FS);
tss->gs = get_segment_selector(vcpu, VCPU_SREG_GS);
tss->ldt_selector = get_segment_selector(vcpu, VCPU_SREG_LDTR);
- tss->prev_task_link = get_segment_selector(vcpu, VCPU_SREG_TR);
}
static int load_state_from_tss32(struct kvm_vcpu *vcpu,
@@ -3785,8 +3885,8 @@ static int load_state_from_tss16(struct kvm_vcpu *vcpu,
}
static int kvm_task_switch_16(struct kvm_vcpu *vcpu, u16 tss_selector,
- u32 old_tss_base,
- struct desc_struct *nseg_desc)
+ u16 old_tss_sel, u32 old_tss_base,
+ struct desc_struct *nseg_desc)
{
struct tss_segment_16 tss_segment_16;
int ret = 0;
@@ -3805,6 +3905,16 @@ static int kvm_task_switch_16(struct kvm_vcpu *vcpu, u16 tss_selector,
&tss_segment_16, sizeof tss_segment_16))
goto out;
+ if (old_tss_sel != 0xffff) {
+ tss_segment_16.prev_task_link = old_tss_sel;
+
+ if (kvm_write_guest(vcpu->kvm,
+ get_tss_base_addr(vcpu, nseg_desc),
+ &tss_segment_16.prev_task_link,
+ sizeof tss_segment_16.prev_task_link))
+ goto out;
+ }
+
if (load_state_from_tss16(vcpu, &tss_segment_16))
goto out;
@@ -3814,7 +3924,7 @@ out:
}
static int kvm_task_switch_32(struct kvm_vcpu *vcpu, u16 tss_selector,
- u32 old_tss_base,
+ u16 old_tss_sel, u32 old_tss_base,
struct desc_struct *nseg_desc)
{
struct tss_segment_32 tss_segment_32;
@@ -3834,6 +3944,16 @@ static int kvm_task_switch_32(struct kvm_vcpu *vcpu, u16 tss_selector,
&tss_segment_32, sizeof tss_segment_32))
goto out;
+ if (old_tss_sel != 0xffff) {
+ tss_segment_32.prev_task_link = old_tss_sel;
+
+ if (kvm_write_guest(vcpu->kvm,
+ get_tss_base_addr(vcpu, nseg_desc),
+ &tss_segment_32.prev_task_link,
+ sizeof tss_segment_32.prev_task_link))
+ goto out;
+ }
+
if (load_state_from_tss32(vcpu, &tss_segment_32))
goto out;
@@ -3887,14 +4007,22 @@ int kvm_task_switch(struct kvm_vcpu *vcpu, u16 tss_selector, int reason)
kvm_x86_ops->set_rflags(vcpu, eflags & ~X86_EFLAGS_NT);
}
- kvm_x86_ops->skip_emulated_instruction(vcpu);
+ /* set back link to prev task only if NT bit is set in eflags
+ note that old_tss_sel is not used afetr this point */
+ if (reason != TASK_SWITCH_CALL && reason != TASK_SWITCH_GATE)
+ old_tss_sel = 0xffff;
+
+ /* set back link to prev task only if NT bit is set in eflags
+ note that old_tss_sel is not used afetr this point */
+ if (reason != TASK_SWITCH_CALL && reason != TASK_SWITCH_GATE)
+ old_tss_sel = 0xffff;
if (nseg_desc.type & 8)
- ret = kvm_task_switch_32(vcpu, tss_selector, old_tss_base,
- &nseg_desc);
+ ret = kvm_task_switch_32(vcpu, tss_selector, old_tss_sel,
+ old_tss_base, &nseg_desc);
else
- ret = kvm_task_switch_16(vcpu, tss_selector, old_tss_base,
- &nseg_desc);
+ ret = kvm_task_switch_16(vcpu, tss_selector, old_tss_sel,
+ old_tss_base, &nseg_desc);
if (reason == TASK_SWITCH_CALL || reason == TASK_SWITCH_GATE) {
u32 eflags = kvm_x86_ops->get_rflags(vcpu);
@@ -3920,7 +4048,7 @@ int kvm_arch_vcpu_ioctl_set_sregs(struct kvm_vcpu *vcpu,
struct kvm_sregs *sregs)
{
int mmu_reset_needed = 0;
- int i, pending_vec, max_bits;
+ int pending_vec, max_bits;
struct descriptor_table dt;
vcpu_load(vcpu);
@@ -3934,7 +4062,13 @@ int kvm_arch_vcpu_ioctl_set_sregs(struct kvm_vcpu *vcpu,
vcpu->arch.cr2 = sregs->cr2;
mmu_reset_needed |= vcpu->arch.cr3 != sregs->cr3;
- vcpu->arch.cr3 = sregs->cr3;
+
+ down_read(&vcpu->kvm->slots_lock);
+ if (gfn_to_memslot(vcpu->kvm, sregs->cr3 >> PAGE_SHIFT))
+ vcpu->arch.cr3 = sregs->cr3;
+ else
+ set_bit(KVM_REQ_TRIPLE_FAULT, &vcpu->requests);
+ up_read(&vcpu->kvm->slots_lock);
kvm_set_cr8(vcpu, sregs->cr8);
@@ -3956,25 +4090,14 @@ int kvm_arch_vcpu_ioctl_set_sregs(struct kvm_vcpu *vcpu,
if (mmu_reset_needed)
kvm_mmu_reset_context(vcpu);
- if (!irqchip_in_kernel(vcpu->kvm)) {
- memcpy(vcpu->arch.irq_pending, sregs->interrupt_bitmap,
- sizeof vcpu->arch.irq_pending);
- vcpu->arch.irq_summary = 0;
- for (i = 0; i < ARRAY_SIZE(vcpu->arch.irq_pending); ++i)
- if (vcpu->arch.irq_pending[i])
- __set_bit(i, &vcpu->arch.irq_summary);
- } else {
- max_bits = (sizeof sregs->interrupt_bitmap) << 3;
- pending_vec = find_first_bit(
- (const unsigned long *)sregs->interrupt_bitmap,
- max_bits);
- /* Only pending external irq is handled here */
- if (pending_vec < max_bits) {
- kvm_x86_ops->set_irq(vcpu, pending_vec);
- pr_debug("Set back pending irq %d\n",
- pending_vec);
- }
- kvm_pic_clear_isr_ack(vcpu->kvm);
+ max_bits = (sizeof sregs->interrupt_bitmap) << 3;
+ pending_vec = find_first_bit(
+ (const unsigned long *)sregs->interrupt_bitmap, max_bits);
+ if (pending_vec < max_bits) {
+ kvm_queue_interrupt(vcpu, pending_vec, false);
+ pr_debug("Set back pending irq %d\n", pending_vec);
+ if (irqchip_in_kernel(vcpu->kvm))
+ kvm_pic_clear_isr_ack(vcpu->kvm);
}
kvm_set_segment(vcpu, &sregs->cs, VCPU_SREG_CS);
@@ -4308,7 +4431,6 @@ struct kvm *kvm_arch_create_vm(void)
return ERR_PTR(-ENOMEM);
INIT_LIST_HEAD(&kvm->arch.active_mmu_pages);
- INIT_LIST_HEAD(&kvm->arch.oos_global_pages);
INIT_LIST_HEAD(&kvm->arch.assigned_dev_head);
/* Reserve bit 0 of irq_sources_bitmap for userspace irq source */
@@ -4411,12 +4533,14 @@ int kvm_arch_set_memory_region(struct kvm *kvm,
}
}
+ spin_lock(&kvm->mmu_lock);
if (!kvm->arch.n_requested_mmu_pages) {
unsigned int nr_mmu_pages = kvm_mmu_calculate_mmu_pages(kvm);
kvm_mmu_change_mmu_pages(kvm, nr_mmu_pages);
}
kvm_mmu_slot_remove_write_access(kvm, mem->slot);
+ spin_unlock(&kvm->mmu_lock);
kvm_flush_remote_tlbs(kvm);
return 0;
@@ -4425,6 +4549,7 @@ int kvm_arch_set_memory_region(struct kvm *kvm,
void kvm_arch_flush_shadow(struct kvm *kvm)
{
kvm_mmu_zap_all(kvm);
+ kvm_reload_remote_mmus(kvm);
}
int kvm_arch_vcpu_runnable(struct kvm_vcpu *vcpu)
@@ -4434,28 +4559,24 @@ int kvm_arch_vcpu_runnable(struct kvm_vcpu *vcpu)
|| vcpu->arch.nmi_pending;
}
-static void vcpu_kick_intr(void *info)
-{
-#ifdef DEBUG
- struct kvm_vcpu *vcpu = (struct kvm_vcpu *)info;
- printk(KERN_DEBUG "vcpu_kick_intr %p \n", vcpu);
-#endif
-}
-
void kvm_vcpu_kick(struct kvm_vcpu *vcpu)
{
- int ipi_pcpu = vcpu->cpu;
- int cpu = get_cpu();
+ int me;
+ int cpu = vcpu->cpu;
if (waitqueue_active(&vcpu->wq)) {
wake_up_interruptible(&vcpu->wq);
++vcpu->stat.halt_wakeup;
}
- /*
- * We may be called synchronously with irqs disabled in guest mode,
- * So need not to call smp_call_function_single() in that case.
- */
- if (vcpu->guest_mode && vcpu->cpu != cpu)
- smp_call_function_single(ipi_pcpu, vcpu_kick_intr, vcpu, 0);
+
+ me = get_cpu();
+ if (cpu != me && (unsigned)cpu < nr_cpu_ids && cpu_online(cpu))
+ if (!test_and_set_bit(KVM_REQ_KICK, &vcpu->requests))
+ smp_send_reschedule(cpu);
put_cpu();
}
+
+int kvm_arch_interrupt_allowed(struct kvm_vcpu *vcpu)
+{
+ return kvm_x86_ops->interrupt_allowed(vcpu);
+}
diff --git a/arch/x86/kvm/x86.h b/arch/x86/kvm/x86.h
index 6a4be78..4c8e10a 100644
--- a/arch/x86/kvm/x86.h
+++ b/arch/x86/kvm/x86.h
@@ -8,9 +8,11 @@ static inline void kvm_clear_exception_queue(struct kvm_vcpu *vcpu)
vcpu->arch.exception.pending = false;
}
-static inline void kvm_queue_interrupt(struct kvm_vcpu *vcpu, u8 vector)
+static inline void kvm_queue_interrupt(struct kvm_vcpu *vcpu, u8 vector,
+ bool soft)
{
vcpu->arch.interrupt.pending = true;
+ vcpu->arch.interrupt.soft = soft;
vcpu->arch.interrupt.nr = vector;
}
@@ -19,4 +21,14 @@ static inline void kvm_clear_interrupt_queue(struct kvm_vcpu *vcpu)
vcpu->arch.interrupt.pending = false;
}
+static inline bool kvm_event_needs_reinjection(struct kvm_vcpu *vcpu)
+{
+ return vcpu->arch.exception.pending || vcpu->arch.interrupt.pending ||
+ vcpu->arch.nmi_injected;
+}
+
+static inline bool kvm_exception_is_soft(unsigned int nr)
+{
+ return (nr == BP_VECTOR) || (nr == OF_VECTOR);
+}
#endif
diff --git a/arch/x86/kvm/x86_emulate.c b/arch/x86/kvm/x86_emulate.c
index ca91749..c1b6c23 100644
--- a/arch/x86/kvm/x86_emulate.c
+++ b/arch/x86/kvm/x86_emulate.c
@@ -59,13 +59,14 @@
#define SrcImm (5<<4) /* Immediate operand. */
#define SrcImmByte (6<<4) /* 8-bit sign-extended immediate operand. */
#define SrcOne (7<<4) /* Implied '1' */
-#define SrcMask (7<<4)
+#define SrcImmUByte (8<<4) /* 8-bit unsigned immediate operand. */
+#define SrcMask (0xf<<4)
/* Generic ModRM decode. */
-#define ModRM (1<<7)
+#define ModRM (1<<8)
/* Destination is only written; never read. */
-#define Mov (1<<8)
-#define BitOp (1<<9)
-#define MemAbs (1<<10) /* Memory operand is absolute displacement */
+#define Mov (1<<9)
+#define BitOp (1<<10)
+#define MemAbs (1<<11) /* Memory operand is absolute displacement */
#define String (1<<12) /* String instruction (rep capable) */
#define Stack (1<<13) /* Stack instruction (push/pop) */
#define Group (1<<14) /* Bits 3:5 of modrm byte extend opcode */
@@ -76,6 +77,7 @@
#define Src2CL (1<<29)
#define Src2ImmByte (2<<29)
#define Src2One (3<<29)
+#define Src2Imm16 (4<<29)
#define Src2Mask (7<<29)
enum {
@@ -135,11 +137,11 @@ static u32 opcode_table[256] = {
SrcNone | ByteOp | ImplicitOps, SrcNone | ImplicitOps, /* insb, insw/insd */
SrcNone | ByteOp | ImplicitOps, SrcNone | ImplicitOps, /* outsb, outsw/outsd */
/* 0x70 - 0x77 */
- ImplicitOps, ImplicitOps, ImplicitOps, ImplicitOps,
- ImplicitOps, ImplicitOps, ImplicitOps, ImplicitOps,
+ SrcImmByte, SrcImmByte, SrcImmByte, SrcImmByte,
+ SrcImmByte, SrcImmByte, SrcImmByte, SrcImmByte,
/* 0x78 - 0x7F */
- ImplicitOps, ImplicitOps, ImplicitOps, ImplicitOps,
- ImplicitOps, ImplicitOps, ImplicitOps, ImplicitOps,
+ SrcImmByte, SrcImmByte, SrcImmByte, SrcImmByte,
+ SrcImmByte, SrcImmByte, SrcImmByte, SrcImmByte,
/* 0x80 - 0x87 */
Group | Group1_80, Group | Group1_81,
Group | Group1_82, Group | Group1_83,
@@ -153,7 +155,8 @@ static u32 opcode_table[256] = {
/* 0x90 - 0x97 */
DstReg, DstReg, DstReg, DstReg, DstReg, DstReg, DstReg, DstReg,
/* 0x98 - 0x9F */
- 0, 0, 0, 0, ImplicitOps | Stack, ImplicitOps | Stack, 0, 0,
+ 0, 0, SrcImm | Src2Imm16, 0,
+ ImplicitOps | Stack, ImplicitOps | Stack, 0, 0,
/* 0xA0 - 0xA7 */
ByteOp | DstReg | SrcMem | Mov | MemAbs, DstReg | SrcMem | Mov | MemAbs,
ByteOp | DstMem | SrcReg | Mov | MemAbs, DstMem | SrcReg | Mov | MemAbs,
@@ -178,7 +181,8 @@ static u32 opcode_table[256] = {
0, ImplicitOps | Stack, 0, 0,
ByteOp | DstMem | SrcImm | ModRM | Mov, DstMem | SrcImm | ModRM | Mov,
/* 0xC8 - 0xCF */
- 0, 0, 0, ImplicitOps | Stack, 0, 0, 0, 0,
+ 0, 0, 0, ImplicitOps | Stack,
+ ImplicitOps, SrcImmByte, ImplicitOps, ImplicitOps,
/* 0xD0 - 0xD7 */
ByteOp | DstMem | SrcImplicit | ModRM, DstMem | SrcImplicit | ModRM,
ByteOp | DstMem | SrcImplicit | ModRM, DstMem | SrcImplicit | ModRM,
@@ -187,11 +191,11 @@ static u32 opcode_table[256] = {
0, 0, 0, 0, 0, 0, 0, 0,
/* 0xE0 - 0xE7 */
0, 0, 0, 0,
- SrcNone | ByteOp | ImplicitOps, SrcNone | ImplicitOps,
- SrcNone | ByteOp | ImplicitOps, SrcNone | ImplicitOps,
+ ByteOp | SrcImmUByte, SrcImmUByte,
+ ByteOp | SrcImmUByte, SrcImmUByte,
/* 0xE8 - 0xEF */
- ImplicitOps | Stack, SrcImm | ImplicitOps,
- ImplicitOps, SrcImmByte | ImplicitOps,
+ SrcImm | Stack, SrcImm | ImplicitOps,
+ SrcImm | Src2Imm16, SrcImmByte | ImplicitOps,
SrcNone | ByteOp | ImplicitOps, SrcNone | ImplicitOps,
SrcNone | ByteOp | ImplicitOps, SrcNone | ImplicitOps,
/* 0xF0 - 0xF7 */
@@ -230,10 +234,8 @@ static u32 twobyte_table[256] = {
/* 0x70 - 0x7F */
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
/* 0x80 - 0x8F */
- ImplicitOps, ImplicitOps, ImplicitOps, ImplicitOps,
- ImplicitOps, ImplicitOps, ImplicitOps, ImplicitOps,
- ImplicitOps, ImplicitOps, ImplicitOps, ImplicitOps,
- ImplicitOps, ImplicitOps, ImplicitOps, ImplicitOps,
+ SrcImm, SrcImm, SrcImm, SrcImm, SrcImm, SrcImm, SrcImm, SrcImm,
+ SrcImm, SrcImm, SrcImm, SrcImm, SrcImm, SrcImm, SrcImm, SrcImm,
/* 0x90 - 0x9F */
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
/* 0xA0 - 0xA7 */
@@ -1044,10 +1046,14 @@ done_prefixes:
}
break;
case SrcImmByte:
+ case SrcImmUByte:
c->src.type = OP_IMM;
c->src.ptr = (unsigned long *)c->eip;
c->src.bytes = 1;
- c->src.val = insn_fetch(s8, 1, c->eip);
+ if ((c->d & SrcMask) == SrcImmByte)
+ c->src.val = insn_fetch(s8, 1, c->eip);
+ else
+ c->src.val = insn_fetch(u8, 1, c->eip);
break;
case SrcOne:
c->src.bytes = 1;
@@ -1072,6 +1078,12 @@ done_prefixes:
c->src2.bytes = 1;
c->src2.val = insn_fetch(u8, 1, c->eip);
break;
+ case Src2Imm16:
+ c->src2.type = OP_IMM;
+ c->src2.ptr = (unsigned long *)c->eip;
+ c->src2.bytes = 2;
+ c->src2.val = insn_fetch(u16, 2, c->eip);
+ break;
case Src2One:
c->src2.bytes = 1;
c->src2.val = 1;
@@ -1349,6 +1361,20 @@ static inline int writeback(struct x86_emulate_ctxt *ctxt,
return 0;
}
+void toggle_interruptibility(struct x86_emulate_ctxt *ctxt, u32 mask)
+{
+ u32 int_shadow = kvm_x86_ops->get_interrupt_shadow(ctxt->vcpu, mask);
+ /*
+ * an sti; sti; sequence only disable interrupts for the first
+ * instruction. So, if the last instruction, be it emulated or
+ * not, left the system with the INT_STI flag enabled, it
+ * means that the last instruction is an sti. We should not
+ * leave the flag on in this case. The same goes for mov ss
+ */
+ if (!(int_shadow & mask))
+ ctxt->interruptibility = mask;
+}
+
int
x86_emulate_insn(struct x86_emulate_ctxt *ctxt, struct x86_emulate_ops *ops)
{
@@ -1360,6 +1386,8 @@ x86_emulate_insn(struct x86_emulate_ctxt *ctxt, struct x86_emulate_ops *ops)
int io_dir_in;
int rc = 0;
+ ctxt->interruptibility = 0;
+
/* Shadow copy of register state. Committed on successful emulation.
* NOTE: we can copy them from vcpu as x86_decode_insn() doesn't
* modify them.
@@ -1531,13 +1559,10 @@ special_insn:
return -1;
}
return 0;
- case 0x70 ... 0x7f: /* jcc (short) */ {
- int rel = insn_fetch(s8, 1, c->eip);
-
+ case 0x70 ... 0x7f: /* jcc (short) */
if (test_cc(c->b, ctxt->eflags))
- jmp_rel(c, rel);
+ jmp_rel(c, c->src.val);
break;
- }
case 0x80 ... 0x83: /* Grp1 */
switch (c->modrm_reg) {
case 0:
@@ -1609,6 +1634,9 @@ special_insn:
int err;
sel = c->src.val;
+ if (c->modrm_reg == VCPU_SREG_SS)
+ toggle_interruptibility(ctxt, X86_SHADOW_INT_MOV_SS);
+
if (c->modrm_reg <= 5) {
type_bits = (c->modrm_reg == 1) ? 9 : 1;
err = kvm_load_segment_descriptor(ctxt->vcpu, sel,
@@ -1769,59 +1797,32 @@ special_insn:
break;
case 0xe4: /* inb */
case 0xe5: /* in */
- port = insn_fetch(u8, 1, c->eip);
+ port = c->src.val;
io_dir_in = 1;
goto do_io;
case 0xe6: /* outb */
case 0xe7: /* out */
- port = insn_fetch(u8, 1, c->eip);
+ port = c->src.val;
io_dir_in = 0;
goto do_io;
case 0xe8: /* call (near) */ {
- long int rel;
- switch (c->op_bytes) {
- case 2:
- rel = insn_fetch(s16, 2, c->eip);
- break;
- case 4:
- rel = insn_fetch(s32, 4, c->eip);
- break;
- default:
- DPRINTF("Call: Invalid op_bytes\n");
- goto cannot_emulate;
- }
+ long int rel = c->src.val;
c->src.val = (unsigned long) c->eip;
jmp_rel(c, rel);
- c->op_bytes = c->ad_bytes;
emulate_push(ctxt);
break;
}
case 0xe9: /* jmp rel */
goto jmp;
- case 0xea: /* jmp far */ {
- uint32_t eip;
- uint16_t sel;
-
- switch (c->op_bytes) {
- case 2:
- eip = insn_fetch(u16, 2, c->eip);
- break;
- case 4:
- eip = insn_fetch(u32, 4, c->eip);
- break;
- default:
- DPRINTF("jmp far: Invalid op_bytes\n");
- goto cannot_emulate;
- }
- sel = insn_fetch(u16, 2, c->eip);
- if (kvm_load_segment_descriptor(ctxt->vcpu, sel, 9, VCPU_SREG_CS) < 0) {
+ case 0xea: /* jmp far */
+ if (kvm_load_segment_descriptor(ctxt->vcpu, c->src2.val, 9,
+ VCPU_SREG_CS) < 0) {
DPRINTF("jmp far: Failed to load CS descriptor\n");
goto cannot_emulate;
}
- c->eip = eip;
+ c->eip = c->src.val;
break;
- }
case 0xeb:
jmp: /* jmp rel short */
jmp_rel(c, c->src.val);
@@ -1865,6 +1866,7 @@ special_insn:
c->dst.type = OP_NONE; /* Disable writeback. */
break;
case 0xfb: /* sti */
+ toggle_interruptibility(ctxt, X86_SHADOW_INT_STI);
ctxt->eflags |= X86_EFLAGS_IF;
c->dst.type = OP_NONE; /* Disable writeback. */
break;
@@ -2039,28 +2041,11 @@ twobyte_insn:
if (!test_cc(c->b, ctxt->eflags))
c->dst.type = OP_NONE; /* no writeback */
break;
- case 0x80 ... 0x8f: /* jnz rel, etc*/ {
- long int rel;
-
- switch (c->op_bytes) {
- case 2:
- rel = insn_fetch(s16, 2, c->eip);
- break;
- case 4:
- rel = insn_fetch(s32, 4, c->eip);
- break;
- case 8:
- rel = insn_fetch(s64, 8, c->eip);
- break;
- default:
- DPRINTF("jnz: Invalid op_bytes\n");
- goto cannot_emulate;
- }
+ case 0x80 ... 0x8f: /* jnz rel, etc*/
if (test_cc(c->b, ctxt->eflags))
- jmp_rel(c, rel);
+ jmp_rel(c, c->src.val);
c->dst.type = OP_NONE;
break;
- }
case 0xa3:
bt: /* bt */
c->dst.type = OP_NONE;
diff --git a/include/linux/kvm.h b/include/linux/kvm.h
index 8cc1379..3db5d8d 100644
--- a/include/linux/kvm.h
+++ b/include/linux/kvm.h
@@ -119,7 +119,7 @@ struct kvm_run {
__u32 error_code;
} ex;
/* KVM_EXIT_IO */
- struct kvm_io {
+ struct {
#define KVM_EXIT_IO_IN 0
#define KVM_EXIT_IO_OUT 1
__u8 direction;
@@ -224,10 +224,10 @@ struct kvm_interrupt {
/* for KVM_GET_DIRTY_LOG */
struct kvm_dirty_log {
__u32 slot;
- __u32 padding;
+ __u32 padding1;
union {
void __user *dirty_bitmap; /* one bit per page */
- __u64 padding;
+ __u64 padding2;
};
};
@@ -409,6 +409,10 @@ struct kvm_trace_rec {
#ifdef __KVM_HAVE_DEVICE_ASSIGNMENT
#define KVM_CAP_DEVICE_DEASSIGNMENT 27
#endif
+#ifdef __KVM_HAVE_MSIX
+#define KVM_CAP_DEVICE_MSIX 28
+#endif
+#define KVM_CAP_ASSIGN_DEV_IRQ 29
/* Another bug in KVM_SET_USER_MEMORY_REGION fixed: */
#define KVM_CAP_JOIN_MEMORY_REGIONS_WORKS 30
@@ -482,11 +486,18 @@ struct kvm_irq_routing {
#define KVM_ASSIGN_PCI_DEVICE _IOR(KVMIO, 0x69, \
struct kvm_assigned_pci_dev)
#define KVM_SET_GSI_ROUTING _IOW(KVMIO, 0x6a, struct kvm_irq_routing)
+/* deprecated, replaced by KVM_ASSIGN_DEV_IRQ */
#define KVM_ASSIGN_IRQ _IOR(KVMIO, 0x70, \
struct kvm_assigned_irq)
+#define KVM_ASSIGN_DEV_IRQ _IOW(KVMIO, 0x70, struct kvm_assigned_irq)
#define KVM_REINJECT_CONTROL _IO(KVMIO, 0x71)
#define KVM_DEASSIGN_PCI_DEVICE _IOW(KVMIO, 0x72, \
struct kvm_assigned_pci_dev)
+#define KVM_ASSIGN_SET_MSIX_NR \
+ _IOW(KVMIO, 0x73, struct kvm_assigned_msix_nr)
+#define KVM_ASSIGN_SET_MSIX_ENTRY \
+ _IOW(KVMIO, 0x74, struct kvm_assigned_msix_entry)
+#define KVM_DEASSIGN_DEV_IRQ _IOW(KVMIO, 0x75, struct kvm_assigned_irq)
/*
* ioctls for vcpu fds
@@ -577,6 +588,8 @@ struct kvm_debug_guest {
#define KVM_TRC_STLB_INVAL (KVM_TRC_HANDLER + 0x18)
#define KVM_TRC_PPC_INSTR (KVM_TRC_HANDLER + 0x19)
+#define KVM_DEV_ASSIGN_ENABLE_IOMMU (1 << 0)
+
struct kvm_assigned_pci_dev {
__u32 assigned_dev_id;
__u32 busnr;
@@ -587,6 +600,17 @@ struct kvm_assigned_pci_dev {
};
};
+#define KVM_DEV_IRQ_HOST_INTX (1 << 0)
+#define KVM_DEV_IRQ_HOST_MSI (1 << 1)
+#define KVM_DEV_IRQ_HOST_MSIX (1 << 2)
+
+#define KVM_DEV_IRQ_GUEST_INTX (1 << 8)
+#define KVM_DEV_IRQ_GUEST_MSI (1 << 9)
+#define KVM_DEV_IRQ_GUEST_MSIX (1 << 10)
+
+#define KVM_DEV_IRQ_HOST_MASK 0x00ff
+#define KVM_DEV_IRQ_GUEST_MASK 0xff00
+
struct kvm_assigned_irq {
__u32 assigned_dev_id;
__u32 host_irq;
@@ -602,9 +626,19 @@ struct kvm_assigned_irq {
};
};
-#define KVM_DEV_ASSIGN_ENABLE_IOMMU (1 << 0)
-#define KVM_DEV_IRQ_ASSIGN_MSI_ACTION KVM_DEV_IRQ_ASSIGN_ENABLE_MSI
-#define KVM_DEV_IRQ_ASSIGN_ENABLE_MSI (1 << 0)
+struct kvm_assigned_msix_nr {
+ __u32 assigned_dev_id;
+ __u16 entry_nr;
+ __u16 padding;
+};
+
+#define KVM_MAX_MSIX_PER_DEV 512
+struct kvm_assigned_msix_entry {
+ __u32 assigned_dev_id;
+ __u32 gsi;
+ __u16 entry; /* The index of entry in the MSI-X table */
+ __u16 padding[3];
+};
#endif
diff --git a/include/linux/kvm_host.h b/include/linux/kvm_host.h
index 894a56e..aacc544 100644
--- a/include/linux/kvm_host.h
+++ b/include/linux/kvm_host.h
@@ -38,6 +38,7 @@
#define KVM_REQ_UNHALT 6
#define KVM_REQ_MMU_SYNC 7
#define KVM_REQ_KVMCLOCK_UPDATE 8
+#define KVM_REQ_KICK 9
#define KVM_USERSPACE_IRQ_SOURCE_ID 0
@@ -72,7 +73,6 @@ struct kvm_vcpu {
struct mutex mutex;
int cpu;
struct kvm_run *run;
- int guest_mode;
unsigned long requests;
unsigned long guest_debug;
int fpu_active;
@@ -298,6 +298,7 @@ int kvm_arch_hardware_setup(void);
void kvm_arch_hardware_unsetup(void);
void kvm_arch_check_processor_compat(void *rtn);
int kvm_arch_vcpu_runnable(struct kvm_vcpu *vcpu);
+int kvm_arch_interrupt_allowed(struct kvm_vcpu *vcpu);
void kvm_free_physmem(struct kvm *kvm);
@@ -319,6 +320,13 @@ struct kvm_irq_ack_notifier {
void (*irq_acked)(struct kvm_irq_ack_notifier *kian);
};
+#define KVM_ASSIGNED_MSIX_PENDING 0x1
+struct kvm_guest_msix_entry {
+ u32 vector;
+ u16 entry;
+ u16 flags;
+};
+
struct kvm_assigned_dev_kernel {
struct kvm_irq_ack_notifier ack_notifier;
struct work_struct interrupt_work;
@@ -326,18 +334,18 @@ struct kvm_assigned_dev_kernel {
int assigned_dev_id;
int host_busnr;
int host_devfn;
+ unsigned int entries_nr;
int host_irq;
bool host_irq_disabled;
+ struct msix_entry *host_msix_entries;
int guest_irq;
-#define KVM_ASSIGNED_DEV_GUEST_INTX (1 << 0)
-#define KVM_ASSIGNED_DEV_GUEST_MSI (1 << 1)
-#define KVM_ASSIGNED_DEV_HOST_INTX (1 << 8)
-#define KVM_ASSIGNED_DEV_HOST_MSI (1 << 9)
+ struct kvm_guest_msix_entry *guest_msix_entries;
unsigned long irq_requested_type;
int irq_source_id;
int flags;
struct pci_dev *dev;
struct kvm *kvm;
+ spinlock_t assigned_dev_lock;
};
struct kvm_irq_mask_notifier {
@@ -360,6 +368,9 @@ void kvm_unregister_irq_ack_notifier(struct kvm_irq_ack_notifier *kian);
int kvm_request_irq_source_id(struct kvm *kvm);
void kvm_free_irq_source_id(struct kvm *kvm, int irq_source_id);
+/* For vcpu->arch.iommu_flags */
+#define KVM_IOMMU_CACHE_COHERENCY 0x1
+
#ifdef CONFIG_IOMMU_API
int kvm_iommu_map_pages(struct kvm *kvm, gfn_t base_gfn,
unsigned long npages);
diff --git a/include/linux/kvm_types.h b/include/linux/kvm_types.h
index 2b8318c..fb46efb 100644
--- a/include/linux/kvm_types.h
+++ b/include/linux/kvm_types.h
@@ -40,4 +40,31 @@ typedef unsigned long hfn_t;
typedef hfn_t pfn_t;
+union kvm_ioapic_redirect_entry {
+ u64 bits;
+ struct {
+ u8 vector;
+ u8 delivery_mode:3;
+ u8 dest_mode:1;
+ u8 delivery_status:1;
+ u8 polarity:1;
+ u8 remote_irr:1;
+ u8 trig_mode:1;
+ u8 mask:1;
+ u8 reserve:7;
+ u8 reserved[4];
+ u8 dest_id;
+ } fields;
+};
+
+struct kvm_lapic_irq {
+ u32 vector;
+ u32 delivery_mode;
+ u32 dest_mode;
+ u32 level;
+ u32 trig_mode;
+ u32 shorthand;
+ u32 dest_id;
+};
+
#endif /* __KVM_TYPES_H__ */
diff --git a/virt/kvm/ioapic.c b/virt/kvm/ioapic.c
index c3b99de..1eddae9 100644
--- a/virt/kvm/ioapic.c
+++ b/virt/kvm/ioapic.c
@@ -85,7 +85,7 @@ static unsigned long ioapic_read_indirect(struct kvm_ioapic *ioapic,
static int ioapic_service(struct kvm_ioapic *ioapic, unsigned int idx)
{
- union ioapic_redir_entry *pent;
+ union kvm_ioapic_redirect_entry *pent;
int injected = -1;
pent = &ioapic->redirtbl[idx];
@@ -142,149 +142,40 @@ static void ioapic_write_indirect(struct kvm_ioapic *ioapic, u32 val)
}
}
-static int ioapic_inj_irq(struct kvm_ioapic *ioapic,
- struct kvm_vcpu *vcpu,
- u8 vector, u8 trig_mode, u8 delivery_mode)
-{
- ioapic_debug("irq %d trig %d deliv %d\n", vector, trig_mode,
- delivery_mode);
-
- ASSERT((delivery_mode == IOAPIC_FIXED) ||
- (delivery_mode == IOAPIC_LOWEST_PRIORITY));
-
- return kvm_apic_set_irq(vcpu, vector, trig_mode);
-}
-
-static void ioapic_inj_nmi(struct kvm_vcpu *vcpu)
-{
- kvm_inject_nmi(vcpu);
- kvm_vcpu_kick(vcpu);
-}
-
-u32 kvm_ioapic_get_delivery_bitmask(struct kvm_ioapic *ioapic, u8 dest,
- u8 dest_mode)
-{
- u32 mask = 0;
- int i;
- struct kvm *kvm = ioapic->kvm;
- struct kvm_vcpu *vcpu;
-
- ioapic_debug("dest %d dest_mode %d\n", dest, dest_mode);
-
- if (dest_mode == 0) { /* Physical mode. */
- if (dest == 0xFF) { /* Broadcast. */
- for (i = 0; i < KVM_MAX_VCPUS; ++i)
- if (kvm->vcpus[i] && kvm->vcpus[i]->arch.apic)
- mask |= 1 << i;
- return mask;
- }
- for (i = 0; i < KVM_MAX_VCPUS; ++i) {
- vcpu = kvm->vcpus[i];
- if (!vcpu)
- continue;
- if (kvm_apic_match_physical_addr(vcpu->arch.apic, dest)) {
- if (vcpu->arch.apic)
- mask = 1 << i;
- break;
- }
- }
- } else if (dest != 0) /* Logical mode, MDA non-zero. */
- for (i = 0; i < KVM_MAX_VCPUS; ++i) {
- vcpu = kvm->vcpus[i];
- if (!vcpu)
- continue;
- if (vcpu->arch.apic &&
- kvm_apic_match_logical_addr(vcpu->arch.apic, dest))
- mask |= 1 << vcpu->vcpu_id;
- }
- ioapic_debug("mask %x\n", mask);
- return mask;
-}
-
static int ioapic_deliver(struct kvm_ioapic *ioapic, int irq)
{
- u8 dest = ioapic->redirtbl[irq].fields.dest_id;
- u8 dest_mode = ioapic->redirtbl[irq].fields.dest_mode;
- u8 delivery_mode = ioapic->redirtbl[irq].fields.delivery_mode;
- u8 vector = ioapic->redirtbl[irq].fields.vector;
- u8 trig_mode = ioapic->redirtbl[irq].fields.trig_mode;
- u32 deliver_bitmask;
- struct kvm_vcpu *vcpu;
- int vcpu_id, r = -1;
+ union kvm_ioapic_redirect_entry *entry = &ioapic->redirtbl[irq];
+ struct kvm_lapic_irq irqe;
ioapic_debug("dest=%x dest_mode=%x delivery_mode=%x "
"vector=%x trig_mode=%x\n",
- dest, dest_mode, delivery_mode, vector, trig_mode);
-
- deliver_bitmask = kvm_ioapic_get_delivery_bitmask(ioapic, dest,
- dest_mode);
- if (!deliver_bitmask) {
- ioapic_debug("no target on destination\n");
- return 0;
- }
+ entry->fields.dest, entry->fields.dest_mode,
+ entry->fields.delivery_mode, entry->fields.vector,
+ entry->fields.trig_mode);
+
+ irqe.dest_id = entry->fields.dest_id;
+ irqe.vector = entry->fields.vector;
+ irqe.dest_mode = entry->fields.dest_mode;
+ irqe.trig_mode = entry->fields.trig_mode;
+ irqe.delivery_mode = entry->fields.delivery_mode << 8;
+ irqe.level = 1;
+ irqe.shorthand = 0;
- switch (delivery_mode) {
- case IOAPIC_LOWEST_PRIORITY:
- vcpu = kvm_get_lowest_prio_vcpu(ioapic->kvm, vector,
- deliver_bitmask);
#ifdef CONFIG_X86
- if (irq == 0)
- vcpu = ioapic->kvm->vcpus[0];
-#endif
- if (vcpu != NULL)
- r = ioapic_inj_irq(ioapic, vcpu, vector,
- trig_mode, delivery_mode);
- else
- ioapic_debug("null lowest prio vcpu: "
- "mask=%x vector=%x delivery_mode=%x\n",
- deliver_bitmask, vector, IOAPIC_LOWEST_PRIORITY);
- break;
- case IOAPIC_FIXED:
-#ifdef CONFIG_X86
- if (irq == 0)
- deliver_bitmask = 1;
-#endif
- for (vcpu_id = 0; deliver_bitmask != 0; vcpu_id++) {
- if (!(deliver_bitmask & (1 << vcpu_id)))
- continue;
- deliver_bitmask &= ~(1 << vcpu_id);
- vcpu = ioapic->kvm->vcpus[vcpu_id];
- if (vcpu) {
- if (r < 0)
- r = 0;
- r += ioapic_inj_irq(ioapic, vcpu, vector,
- trig_mode, delivery_mode);
- }
- }
- break;
- case IOAPIC_NMI:
- for (vcpu_id = 0; deliver_bitmask != 0; vcpu_id++) {
- if (!(deliver_bitmask & (1 << vcpu_id)))
- continue;
- deliver_bitmask &= ~(1 << vcpu_id);
- vcpu = ioapic->kvm->vcpus[vcpu_id];
- if (vcpu) {
- ioapic_inj_nmi(vcpu);
- r = 1;
- }
- else
- ioapic_debug("NMI to vcpu %d failed\n",
- vcpu->vcpu_id);
- }
- break;
- default:
- printk(KERN_WARNING "Unsupported delivery mode %d\n",
- delivery_mode);
- break;
+ /* Always delivery PIT interrupt to vcpu 0 */
+ if (irq == 0) {
+ irqe.dest_mode = 0; /* Physical mode. */
+ irqe.dest_id = ioapic->kvm->vcpus[0]->vcpu_id;
}
- return r;
+#endif
+ return kvm_irq_delivery_to_apic(ioapic->kvm, NULL, &irqe);
}
int kvm_ioapic_set_irq(struct kvm_ioapic *ioapic, int irq, int level)
{
u32 old_irr = ioapic->irr;
u32 mask = 1 << irq;
- union ioapic_redir_entry entry;
+ union kvm_ioapic_redirect_entry entry;
int ret = 1;
if (irq >= 0 && irq < IOAPIC_NUM_PINS) {
@@ -305,7 +196,7 @@ int kvm_ioapic_set_irq(struct kvm_ioapic *ioapic, int irq, int level)
static void __kvm_ioapic_update_eoi(struct kvm_ioapic *ioapic, int pin,
int trigger_mode)
{
- union ioapic_redir_entry *ent;
+ union kvm_ioapic_redirect_entry *ent;
ent = &ioapic->redirtbl[pin];
diff --git a/virt/kvm/ioapic.h b/virt/kvm/ioapic.h
index a34bd5e..7080b71 100644
--- a/virt/kvm/ioapic.h
+++ b/virt/kvm/ioapic.h
@@ -40,22 +40,7 @@ struct kvm_ioapic {
u32 id;
u32 irr;
u32 pad;
- union ioapic_redir_entry {
- u64 bits;
- struct {
- u8 vector;
- u8 delivery_mode:3;
- u8 dest_mode:1;
- u8 delivery_status:1;
- u8 polarity:1;
- u8 remote_irr:1;
- u8 trig_mode:1;
- u8 mask:1;
- u8 reserve:7;
- u8 reserved[4];
- u8 dest_id;
- } fields;
- } redirtbl[IOAPIC_NUM_PINS];
+ union kvm_ioapic_redirect_entry redirtbl[IOAPIC_NUM_PINS];
struct kvm_io_device dev;
struct kvm *kvm;
void (*ack_notifier)(void *opaque, int irq);
@@ -79,13 +64,13 @@ static inline struct kvm_ioapic *ioapic_irqchip(struct kvm *kvm)
return kvm->arch.vioapic;
}
-struct kvm_vcpu *kvm_get_lowest_prio_vcpu(struct kvm *kvm, u8 vector,
- unsigned long bitmap);
+int kvm_apic_match_dest(struct kvm_vcpu *vcpu, struct kvm_lapic *source,
+ int short_hand, int dest, int dest_mode);
+int kvm_apic_compare_prio(struct kvm_vcpu *vcpu1, struct kvm_vcpu *vcpu2);
void kvm_ioapic_update_eoi(struct kvm *kvm, int vector, int trigger_mode);
int kvm_ioapic_init(struct kvm *kvm);
int kvm_ioapic_set_irq(struct kvm_ioapic *ioapic, int irq, int level);
void kvm_ioapic_reset(struct kvm_ioapic *ioapic);
-u32 kvm_ioapic_get_delivery_bitmask(struct kvm_ioapic *ioapic, u8 dest,
- u8 dest_mode);
-
+int kvm_irq_delivery_to_apic(struct kvm *kvm, struct kvm_lapic *src,
+ struct kvm_lapic_irq *irq);
#endif
diff --git a/virt/kvm/iommu.c b/virt/kvm/iommu.c
index 4c40375..1514758 100644
--- a/virt/kvm/iommu.c
+++ b/virt/kvm/iommu.c
@@ -39,11 +39,16 @@ int kvm_iommu_map_pages(struct kvm *kvm,
pfn_t pfn;
int i, r = 0;
struct iommu_domain *domain = kvm->arch.iommu_domain;
+ int flags;
/* check if iommu exists and in use */
if (!domain)
return 0;
+ flags = IOMMU_READ | IOMMU_WRITE;
+ if (kvm->arch.iommu_flags & KVM_IOMMU_CACHE_COHERENCY)
+ flags |= IOMMU_CACHE;
+
for (i = 0; i < npages; i++) {
/* check if already mapped */
if (iommu_iova_to_phys(domain, gfn_to_gpa(gfn)))
@@ -53,8 +58,7 @@ int kvm_iommu_map_pages(struct kvm *kvm,
r = iommu_map_range(domain,
gfn_to_gpa(gfn),
pfn_to_hpa(pfn),
- PAGE_SIZE,
- IOMMU_READ | IOMMU_WRITE);
+ PAGE_SIZE, flags);
if (r) {
printk(KERN_ERR "kvm_iommu_map_address:"
"iommu failed to map pfn=%lx\n", pfn);
@@ -88,7 +92,7 @@ int kvm_assign_device(struct kvm *kvm,
{
struct pci_dev *pdev = NULL;
struct iommu_domain *domain = kvm->arch.iommu_domain;
- int r;
+ int r, last_flags;
/* check if iommu exists and in use */
if (!domain)
@@ -107,12 +111,29 @@ int kvm_assign_device(struct kvm *kvm,
return r;
}
+ last_flags = kvm->arch.iommu_flags;
+ if (iommu_domain_has_cap(kvm->arch.iommu_domain,
+ IOMMU_CAP_CACHE_COHERENCY))
+ kvm->arch.iommu_flags |= KVM_IOMMU_CACHE_COHERENCY;
+
+ /* Check if need to update IOMMU page table for guest memory */
+ if ((last_flags ^ kvm->arch.iommu_flags) ==
+ KVM_IOMMU_CACHE_COHERENCY) {
+ kvm_iommu_unmap_memslots(kvm);
+ r = kvm_iommu_map_memslots(kvm);
+ if (r)
+ goto out_unmap;
+ }
+
printk(KERN_DEBUG "assign device: host bdf = %x:%x:%x\n",
assigned_dev->host_busnr,
PCI_SLOT(assigned_dev->host_devfn),
PCI_FUNC(assigned_dev->host_devfn));
return 0;
+out_unmap:
+ kvm_iommu_unmap_memslots(kvm);
+ return r;
}
int kvm_deassign_device(struct kvm *kvm,
diff --git a/virt/kvm/irq_comm.c b/virt/kvm/irq_comm.c
index 864ac54..a8bd466 100644
--- a/virt/kvm/irq_comm.c
+++ b/virt/kvm/irq_comm.c
@@ -22,6 +22,9 @@
#include <linux/kvm_host.h>
#include <asm/msidef.h>
+#ifdef CONFIG_IA64
+#include <asm/iosapic.h>
+#endif
#include "irq.h"
@@ -43,57 +46,73 @@ static int kvm_set_ioapic_irq(struct kvm_kernel_irq_routing_entry *e,
return kvm_ioapic_set_irq(kvm->arch.vioapic, e->irqchip.pin, level);
}
-static int kvm_set_msi(struct kvm_kernel_irq_routing_entry *e,
- struct kvm *kvm, int level)
+inline static bool kvm_is_dm_lowest_prio(struct kvm_lapic_irq *irq)
{
- int vcpu_id, r = -1;
- struct kvm_vcpu *vcpu;
- struct kvm_ioapic *ioapic = ioapic_irqchip(kvm);
- int dest_id = (e->msi.address_lo & MSI_ADDR_DEST_ID_MASK)
- >> MSI_ADDR_DEST_ID_SHIFT;
- int vector = (e->msi.data & MSI_DATA_VECTOR_MASK)
- >> MSI_DATA_VECTOR_SHIFT;
- int dest_mode = test_bit(MSI_ADDR_DEST_MODE_SHIFT,
- (unsigned long *)&e->msi.address_lo);
- int trig_mode = test_bit(MSI_DATA_TRIGGER_SHIFT,
- (unsigned long *)&e->msi.data);
- int delivery_mode = test_bit(MSI_DATA_DELIVERY_MODE_SHIFT,
- (unsigned long *)&e->msi.data);
- u32 deliver_bitmask;
-
- BUG_ON(!ioapic);
-
- deliver_bitmask = kvm_ioapic_get_delivery_bitmask(ioapic,
- dest_id, dest_mode);
- /* IOAPIC delivery mode value is the same as MSI here */
- switch (delivery_mode) {
- case IOAPIC_LOWEST_PRIORITY:
- vcpu = kvm_get_lowest_prio_vcpu(ioapic->kvm, vector,
- deliver_bitmask);
- if (vcpu != NULL)
- r = kvm_apic_set_irq(vcpu, vector, trig_mode);
- else
- printk(KERN_INFO "kvm: null lowest priority vcpu!\n");
- break;
- case IOAPIC_FIXED:
- for (vcpu_id = 0; deliver_bitmask != 0; vcpu_id++) {
- if (!(deliver_bitmask & (1 << vcpu_id)))
- continue;
- deliver_bitmask &= ~(1 << vcpu_id);
- vcpu = ioapic->kvm->vcpus[vcpu_id];
- if (vcpu) {
- if (r < 0)
- r = 0;
- r += kvm_apic_set_irq(vcpu, vector, trig_mode);
- }
+#ifdef CONFIG_IA64
+ return irq->delivery_mode ==
+ (IOSAPIC_LOWEST_PRIORITY << IOSAPIC_DELIVERY_SHIFT);
+#else
+ return irq->delivery_mode == APIC_DM_LOWEST;
+#endif
+}
+
+int kvm_irq_delivery_to_apic(struct kvm *kvm, struct kvm_lapic *src,
+ struct kvm_lapic_irq *irq)
+{
+ int i, r = -1;
+ struct kvm_vcpu *vcpu, *lowest = NULL;
+
+ if (irq->dest_mode == 0 && irq->dest_id == 0xff &&
+ kvm_is_dm_lowest_prio(irq))
+ printk(KERN_INFO "kvm: apic: phys broadcast and lowest prio\n");
+
+ for (i = 0; i < KVM_MAX_VCPUS; i++) {
+ vcpu = kvm->vcpus[i];
+
+ if (!vcpu || !kvm_apic_present(vcpu))
+ continue;
+
+ if (!kvm_apic_match_dest(vcpu, src, irq->shorthand,
+ irq->dest_id, irq->dest_mode))
+ continue;
+
+ if (!kvm_is_dm_lowest_prio(irq)) {
+ if (r < 0)
+ r = 0;
+ r += kvm_apic_set_irq(vcpu, irq);
+ } else {
+ if (!lowest)
+ lowest = vcpu;
+ else if (kvm_apic_compare_prio(vcpu, lowest) < 0)
+ lowest = vcpu;
}
- break;
- default:
- break;
}
+
+ if (lowest)
+ r = kvm_apic_set_irq(lowest, irq);
+
return r;
}
+static int kvm_set_msi(struct kvm_kernel_irq_routing_entry *e,
+ struct kvm *kvm, int level)
+{
+ struct kvm_lapic_irq irq;
+
+ irq.dest_id = (e->msi.address_lo &
+ MSI_ADDR_DEST_ID_MASK) >> MSI_ADDR_DEST_ID_SHIFT;
+ irq.vector = (e->msi.data &
+ MSI_DATA_VECTOR_MASK) >> MSI_DATA_VECTOR_SHIFT;
+ irq.dest_mode = (1 << MSI_ADDR_DEST_MODE_SHIFT) & e->msi.address_lo;
+ irq.trig_mode = (1 << MSI_DATA_TRIGGER_SHIFT) & e->msi.data;
+ irq.delivery_mode = e->msi.data & 0x700;
+ irq.level = 1;
+ irq.shorthand = 0;
+
+ /* TODO Deal with RH bit of MSI message address */
+ return kvm_irq_delivery_to_apic(kvm, NULL, &irq);
+}
+
/* This should be called with the kvm->lock mutex held
* Return value:
* < 0 Interrupt was ignored (masked or not delivered for other reasons)
@@ -252,7 +271,7 @@ static int setup_routing_entry(struct kvm_kernel_irq_routing_entry *e,
delta = 8;
break;
case KVM_IRQCHIP_IOAPIC:
- e->set = kvm_set_ioapic_irq;
+ e->set = kvm_set_ioapic_irq;
break;
default:
goto out;
diff --git a/virt/kvm/kvm_main.c b/virt/kvm/kvm_main.c
index 4d0dd39..e211945 100644
--- a/virt/kvm/kvm_main.c
+++ b/virt/kvm/kvm_main.c
@@ -41,6 +41,8 @@
#include <linux/pagemap.h>
#include <linux/mman.h>
#include <linux/swap.h>
+#include <linux/bitops.h>
+#include <linux/spinlock.h>
#include <asm/processor.h>
#include <asm/io.h>
@@ -60,9 +62,6 @@
MODULE_AUTHOR("Qumranet");
MODULE_LICENSE("GPL");
-static int msi2intx = 1;
-module_param(msi2intx, bool, 0);
-
DEFINE_SPINLOCK(kvm_lock);
LIST_HEAD(vm_list);
@@ -95,38 +94,96 @@ static struct kvm_assigned_dev_kernel *kvm_find_assigned_dev(struct list_head *h
return NULL;
}
+static int find_index_from_host_irq(struct kvm_assigned_dev_kernel
+ *assigned_dev, int irq)
+{
+ int i, index;
+ struct msix_entry *host_msix_entries;
+
+ host_msix_entries = assigned_dev->host_msix_entries;
+
+ index = -1;
+ for (i = 0; i < assigned_dev->entries_nr; i++)
+ if (irq == host_msix_entries[i].vector) {
+ index = i;
+ break;
+ }
+ if (index < 0) {
+ printk(KERN_WARNING "Fail to find correlated MSI-X entry!\n");
+ return 0;
+ }
+
+ return index;
+}
+
static void kvm_assigned_dev_interrupt_work_handler(struct work_struct *work)
{
struct kvm_assigned_dev_kernel *assigned_dev;
+ struct kvm *kvm;
+ int irq, i;
assigned_dev = container_of(work, struct kvm_assigned_dev_kernel,
interrupt_work);
+ kvm = assigned_dev->kvm;
/* This is taken to safely inject irq inside the guest. When
* the interrupt injection (or the ioapic code) uses a
* finer-grained lock, update this
*/
- mutex_lock(&assigned_dev->kvm->lock);
- kvm_set_irq(assigned_dev->kvm, assigned_dev->irq_source_id,
- assigned_dev->guest_irq, 1);
-
- if (assigned_dev->irq_requested_type & KVM_ASSIGNED_DEV_GUEST_MSI) {
- enable_irq(assigned_dev->host_irq);
- assigned_dev->host_irq_disabled = false;
+ mutex_lock(&kvm->lock);
+ spin_lock_irq(&assigned_dev->assigned_dev_lock);
+ if (assigned_dev->irq_requested_type & KVM_DEV_IRQ_HOST_MSIX) {
+ struct kvm_guest_msix_entry *guest_entries =
+ assigned_dev->guest_msix_entries;
+ for (i = 0; i < assigned_dev->entries_nr; i++) {
+ if (!(guest_entries[i].flags &
+ KVM_ASSIGNED_MSIX_PENDING))
+ continue;
+ guest_entries[i].flags &= ~KVM_ASSIGNED_MSIX_PENDING;
+ kvm_set_irq(assigned_dev->kvm,
+ assigned_dev->irq_source_id,
+ guest_entries[i].vector, 1);
+ irq = assigned_dev->host_msix_entries[i].vector;
+ if (irq != 0)
+ enable_irq(irq);
+ assigned_dev->host_irq_disabled = false;
+ }
+ } else {
+ kvm_set_irq(assigned_dev->kvm, assigned_dev->irq_source_id,
+ assigned_dev->guest_irq, 1);
+ if (assigned_dev->irq_requested_type &
+ KVM_DEV_IRQ_GUEST_MSI) {
+ enable_irq(assigned_dev->host_irq);
+ assigned_dev->host_irq_disabled = false;
+ }
}
+
+ spin_unlock_irq(&assigned_dev->assigned_dev_lock);
mutex_unlock(&assigned_dev->kvm->lock);
}
static irqreturn_t kvm_assigned_dev_intr(int irq, void *dev_id)
{
+ unsigned long flags;
struct kvm_assigned_dev_kernel *assigned_dev =
(struct kvm_assigned_dev_kernel *) dev_id;
+ spin_lock_irqsave(&assigned_dev->assigned_dev_lock, flags);
+ if (assigned_dev->irq_requested_type & KVM_DEV_IRQ_HOST_MSIX) {
+ int index = find_index_from_host_irq(assigned_dev, irq);
+ if (index < 0)
+ goto out;
+ assigned_dev->guest_msix_entries[index].flags |=
+ KVM_ASSIGNED_MSIX_PENDING;
+ }
+
schedule_work(&assigned_dev->interrupt_work);
disable_irq_nosync(irq);
assigned_dev->host_irq_disabled = true;
+out:
+ spin_unlock_irqrestore(&assigned_dev->assigned_dev_lock, flags);
return IRQ_HANDLED;
}
@@ -134,6 +191,7 @@ static irqreturn_t kvm_assigned_dev_intr(int irq, void *dev_id)
static void kvm_assigned_dev_ack_irq(struct kvm_irq_ack_notifier *kian)
{
struct kvm_assigned_dev_kernel *dev;
+ unsigned long flags;
if (kian->gsi == -1)
return;
@@ -146,28 +204,30 @@ static void kvm_assigned_dev_ack_irq(struct kvm_irq_ack_notifier *kian)
/* The guest irq may be shared so this ack may be
* from another device.
*/
+ spin_lock_irqsave(&dev->assigned_dev_lock, flags);
if (dev->host_irq_disabled) {
enable_irq(dev->host_irq);
dev->host_irq_disabled = false;
}
+ spin_unlock_irqrestore(&dev->assigned_dev_lock, flags);
}
-/* The function implicit hold kvm->lock mutex due to cancel_work_sync() */
-static void kvm_free_assigned_irq(struct kvm *kvm,
- struct kvm_assigned_dev_kernel *assigned_dev)
+static void deassign_guest_irq(struct kvm *kvm,
+ struct kvm_assigned_dev_kernel *assigned_dev)
{
- if (!irqchip_in_kernel(kvm))
- return;
-
kvm_unregister_irq_ack_notifier(&assigned_dev->ack_notifier);
+ assigned_dev->ack_notifier.gsi = -1;
if (assigned_dev->irq_source_id != -1)
kvm_free_irq_source_id(kvm, assigned_dev->irq_source_id);
assigned_dev->irq_source_id = -1;
+ assigned_dev->irq_requested_type &= ~(KVM_DEV_IRQ_GUEST_MASK);
+}
- if (!assigned_dev->irq_requested_type)
- return;
-
+/* The function implicit hold kvm->lock mutex due to cancel_work_sync() */
+static void deassign_host_irq(struct kvm *kvm,
+ struct kvm_assigned_dev_kernel *assigned_dev)
+{
/*
* In kvm_free_device_irq, cancel_work_sync return true if:
* 1. work is scheduled, and then cancelled.
@@ -184,17 +244,64 @@ static void kvm_free_assigned_irq(struct kvm *kvm,
* now, the kvm state is still legal for probably we also have to wait
* interrupt_work done.
*/
- disable_irq_nosync(assigned_dev->host_irq);
- cancel_work_sync(&assigned_dev->interrupt_work);
+ if (assigned_dev->irq_requested_type & KVM_DEV_IRQ_HOST_MSIX) {
+ int i;
+ for (i = 0; i < assigned_dev->entries_nr; i++)
+ disable_irq_nosync(assigned_dev->
+ host_msix_entries[i].vector);
+
+ cancel_work_sync(&assigned_dev->interrupt_work);
+
+ for (i = 0; i < assigned_dev->entries_nr; i++)
+ free_irq(assigned_dev->host_msix_entries[i].vector,
+ (void *)assigned_dev);
+
+ assigned_dev->entries_nr = 0;
+ kfree(assigned_dev->host_msix_entries);
+ kfree(assigned_dev->guest_msix_entries);
+ pci_disable_msix(assigned_dev->dev);
+ } else {
+ /* Deal with MSI and INTx */
+ disable_irq_nosync(assigned_dev->host_irq);
+ cancel_work_sync(&assigned_dev->interrupt_work);
- free_irq(assigned_dev->host_irq, (void *)assigned_dev);
+ free_irq(assigned_dev->host_irq, (void *)assigned_dev);
- if (assigned_dev->irq_requested_type & KVM_ASSIGNED_DEV_HOST_MSI)
- pci_disable_msi(assigned_dev->dev);
+ if (assigned_dev->irq_requested_type & KVM_DEV_IRQ_HOST_MSI)
+ pci_disable_msi(assigned_dev->dev);
+ }
- assigned_dev->irq_requested_type = 0;
+ assigned_dev->irq_requested_type &= ~(KVM_DEV_IRQ_HOST_MASK);
}
+static int kvm_deassign_irq(struct kvm *kvm,
+ struct kvm_assigned_dev_kernel *assigned_dev,
+ unsigned long irq_requested_type)
+{
+ unsigned long guest_irq_type, host_irq_type;
+
+ if (!irqchip_in_kernel(kvm))
+ return -EINVAL;
+ /* no irq assignment to deassign */
+ if (!assigned_dev->irq_requested_type)
+ return -ENXIO;
+
+ host_irq_type = irq_requested_type & KVM_DEV_IRQ_HOST_MASK;
+ guest_irq_type = irq_requested_type & KVM_DEV_IRQ_GUEST_MASK;
+
+ if (host_irq_type)
+ deassign_host_irq(kvm, assigned_dev);
+ if (guest_irq_type)
+ deassign_guest_irq(kvm, assigned_dev);
+
+ return 0;
+}
+
+static void kvm_free_assigned_irq(struct kvm *kvm,
+ struct kvm_assigned_dev_kernel *assigned_dev)
+{
+ kvm_deassign_irq(kvm, assigned_dev, assigned_dev->irq_requested_type);
+}
static void kvm_free_assigned_device(struct kvm *kvm,
struct kvm_assigned_dev_kernel
@@ -226,190 +333,244 @@ void kvm_free_all_assigned_devices(struct kvm *kvm)
}
}
-static int assigned_device_update_intx(struct kvm *kvm,
- struct kvm_assigned_dev_kernel *adev,
- struct kvm_assigned_irq *airq)
+static int assigned_device_enable_host_intx(struct kvm *kvm,
+ struct kvm_assigned_dev_kernel *dev)
{
- adev->guest_irq = airq->guest_irq;
- adev->ack_notifier.gsi = airq->guest_irq;
+ dev->host_irq = dev->dev->irq;
+ /* Even though this is PCI, we don't want to use shared
+ * interrupts. Sharing host devices with guest-assigned devices
+ * on the same interrupt line is not a happy situation: there
+ * are going to be long delays in accepting, acking, etc.
+ */
+ if (request_irq(dev->host_irq, kvm_assigned_dev_intr,
+ 0, "kvm_assigned_intx_device", (void *)dev))
+ return -EIO;
+ return 0;
+}
- if (adev->irq_requested_type & KVM_ASSIGNED_DEV_HOST_INTX)
- return 0;
+#ifdef __KVM_HAVE_MSI
+static int assigned_device_enable_host_msi(struct kvm *kvm,
+ struct kvm_assigned_dev_kernel *dev)
+{
+ int r;
- if (irqchip_in_kernel(kvm)) {
- if (!msi2intx &&
- (adev->irq_requested_type & KVM_ASSIGNED_DEV_HOST_MSI)) {
- free_irq(adev->host_irq, (void *)adev);
- pci_disable_msi(adev->dev);
- }
+ if (!dev->dev->msi_enabled) {
+ r = pci_enable_msi(dev->dev);
+ if (r)
+ return r;
+ }
- if (!capable(CAP_SYS_RAWIO))
- return -EPERM;
+ dev->host_irq = dev->dev->irq;
+ if (request_irq(dev->host_irq, kvm_assigned_dev_intr, 0,
+ "kvm_assigned_msi_device", (void *)dev)) {
+ pci_disable_msi(dev->dev);
+ return -EIO;
+ }
- if (airq->host_irq)
- adev->host_irq = airq->host_irq;
- else
- adev->host_irq = adev->dev->irq;
+ return 0;
+}
+#endif
- /* Even though this is PCI, we don't want to use shared
- * interrupts. Sharing host devices with guest-assigned devices
- * on the same interrupt line is not a happy situation: there
- * are going to be long delays in accepting, acking, etc.
- */
- if (request_irq(adev->host_irq, kvm_assigned_dev_intr,
- 0, "kvm_assigned_intx_device", (void *)adev))
- return -EIO;
+#ifdef __KVM_HAVE_MSIX
+static int assigned_device_enable_host_msix(struct kvm *kvm,
+ struct kvm_assigned_dev_kernel *dev)
+{
+ int i, r = -EINVAL;
+
+ /* host_msix_entries and guest_msix_entries should have been
+ * initialized */
+ if (dev->entries_nr == 0)
+ return r;
+
+ r = pci_enable_msix(dev->dev, dev->host_msix_entries, dev->entries_nr);
+ if (r)
+ return r;
+
+ for (i = 0; i < dev->entries_nr; i++) {
+ r = request_irq(dev->host_msix_entries[i].vector,
+ kvm_assigned_dev_intr, 0,
+ "kvm_assigned_msix_device",
+ (void *)dev);
+ /* FIXME: free requested_irq's on failure */
+ if (r)
+ return r;
}
- adev->irq_requested_type = KVM_ASSIGNED_DEV_GUEST_INTX |
- KVM_ASSIGNED_DEV_HOST_INTX;
return 0;
}
-#ifdef CONFIG_X86
-static int assigned_device_update_msi(struct kvm *kvm,
- struct kvm_assigned_dev_kernel *adev,
- struct kvm_assigned_irq *airq)
+#endif
+
+static int assigned_device_enable_guest_intx(struct kvm *kvm,
+ struct kvm_assigned_dev_kernel *dev,
+ struct kvm_assigned_irq *irq)
{
- int r;
+ dev->guest_irq = irq->guest_irq;
+ dev->ack_notifier.gsi = irq->guest_irq;
+ return 0;
+}
- adev->guest_irq = airq->guest_irq;
- if (airq->flags & KVM_DEV_IRQ_ASSIGN_ENABLE_MSI) {
- /* x86 don't care upper address of guest msi message addr */
- adev->irq_requested_type |= KVM_ASSIGNED_DEV_GUEST_MSI;
- adev->irq_requested_type &= ~KVM_ASSIGNED_DEV_GUEST_INTX;
- adev->ack_notifier.gsi = -1;
- } else if (msi2intx) {
- adev->irq_requested_type |= KVM_ASSIGNED_DEV_GUEST_INTX;
- adev->irq_requested_type &= ~KVM_ASSIGNED_DEV_GUEST_MSI;
- adev->ack_notifier.gsi = airq->guest_irq;
- } else {
- /*
- * Guest require to disable device MSI, we disable MSI and
- * re-enable INTx by default again. Notice it's only for
- * non-msi2intx.
- */
- assigned_device_update_intx(kvm, adev, airq);
- return 0;
+#ifdef __KVM_HAVE_MSI
+static int assigned_device_enable_guest_msi(struct kvm *kvm,
+ struct kvm_assigned_dev_kernel *dev,
+ struct kvm_assigned_irq *irq)
+{
+ dev->guest_irq = irq->guest_irq;
+ dev->ack_notifier.gsi = -1;
+ return 0;
+}
+#endif
+#ifdef __KVM_HAVE_MSIX
+static int assigned_device_enable_guest_msix(struct kvm *kvm,
+ struct kvm_assigned_dev_kernel *dev,
+ struct kvm_assigned_irq *irq)
+{
+ dev->guest_irq = irq->guest_irq;
+ dev->ack_notifier.gsi = -1;
+ return 0;
+}
+#endif
+
+static int assign_host_irq(struct kvm *kvm,
+ struct kvm_assigned_dev_kernel *dev,
+ __u32 host_irq_type)
+{
+ int r = -EEXIST;
+
+ if (dev->irq_requested_type & KVM_DEV_IRQ_HOST_MASK)
+ return r;
+
+ switch (host_irq_type) {
+ case KVM_DEV_IRQ_HOST_INTX:
+ r = assigned_device_enable_host_intx(kvm, dev);
+ break;
+#ifdef __KVM_HAVE_MSI
+ case KVM_DEV_IRQ_HOST_MSI:
+ r = assigned_device_enable_host_msi(kvm, dev);
+ break;
+#endif
+#ifdef __KVM_HAVE_MSIX
+ case KVM_DEV_IRQ_HOST_MSIX:
+ r = assigned_device_enable_host_msix(kvm, dev);
+ break;
+#endif
+ default:
+ r = -EINVAL;
}
- if (adev->irq_requested_type & KVM_ASSIGNED_DEV_HOST_MSI)
- return 0;
+ if (!r)
+ dev->irq_requested_type |= host_irq_type;
- if (irqchip_in_kernel(kvm)) {
- if (!msi2intx) {
- if (adev->irq_requested_type &
- KVM_ASSIGNED_DEV_HOST_INTX)
- free_irq(adev->host_irq, (void *)adev);
+ return r;
+}
- r = pci_enable_msi(adev->dev);
- if (r)
- return r;
- }
+static int assign_guest_irq(struct kvm *kvm,
+ struct kvm_assigned_dev_kernel *dev,
+ struct kvm_assigned_irq *irq,
+ unsigned long guest_irq_type)
+{
+ int id;
+ int r = -EEXIST;
+
+ if (dev->irq_requested_type & KVM_DEV_IRQ_GUEST_MASK)
+ return r;
- adev->host_irq = adev->dev->irq;
- if (request_irq(adev->host_irq, kvm_assigned_dev_intr, 0,
- "kvm_assigned_msi_device", (void *)adev))
- return -EIO;
+ id = kvm_request_irq_source_id(kvm);
+ if (id < 0)
+ return id;
+
+ dev->irq_source_id = id;
+
+ switch (guest_irq_type) {
+ case KVM_DEV_IRQ_GUEST_INTX:
+ r = assigned_device_enable_guest_intx(kvm, dev, irq);
+ break;
+#ifdef __KVM_HAVE_MSI
+ case KVM_DEV_IRQ_GUEST_MSI:
+ r = assigned_device_enable_guest_msi(kvm, dev, irq);
+ break;
+#endif
+#ifdef __KVM_HAVE_MSIX
+ case KVM_DEV_IRQ_GUEST_MSIX:
+ r = assigned_device_enable_guest_msix(kvm, dev, irq);
+ break;
+#endif
+ default:
+ r = -EINVAL;
}
- if (!msi2intx)
- adev->irq_requested_type = KVM_ASSIGNED_DEV_GUEST_MSI;
+ if (!r) {
+ dev->irq_requested_type |= guest_irq_type;
+ kvm_register_irq_ack_notifier(kvm, &dev->ack_notifier);
+ } else
+ kvm_free_irq_source_id(kvm, dev->irq_source_id);
- adev->irq_requested_type |= KVM_ASSIGNED_DEV_HOST_MSI;
- return 0;
+ return r;
}
-#endif
+/* TODO Deal with KVM_DEV_IRQ_ASSIGNED_MASK_MSIX */
static int kvm_vm_ioctl_assign_irq(struct kvm *kvm,
- struct kvm_assigned_irq
- *assigned_irq)
+ struct kvm_assigned_irq *assigned_irq)
{
- int r = 0;
+ int r = -EINVAL;
struct kvm_assigned_dev_kernel *match;
- u32 current_flags = 0, changed_flags;
+ unsigned long host_irq_type, guest_irq_type;
- mutex_lock(&kvm->lock);
+ if (!capable(CAP_SYS_RAWIO))
+ return -EPERM;
+ if (!irqchip_in_kernel(kvm))
+ return r;
+
+ mutex_lock(&kvm->lock);
+ r = -ENODEV;
match = kvm_find_assigned_dev(&kvm->arch.assigned_dev_head,
assigned_irq->assigned_dev_id);
- if (!match) {
- mutex_unlock(&kvm->lock);
- return -EINVAL;
- }
-
- if (!match->irq_requested_type) {
- INIT_WORK(&match->interrupt_work,
- kvm_assigned_dev_interrupt_work_handler);
- if (irqchip_in_kernel(kvm)) {
- /* Register ack nofitier */
- match->ack_notifier.gsi = -1;
- match->ack_notifier.irq_acked =
- kvm_assigned_dev_ack_irq;
- kvm_register_irq_ack_notifier(kvm,
- &match->ack_notifier);
-
- /* Request IRQ source ID */
- r = kvm_request_irq_source_id(kvm);
- if (r < 0)
- goto out_release;
- else
- match->irq_source_id = r;
-
-#ifdef CONFIG_X86
- /* Determine host device irq type, we can know the
- * result from dev->msi_enabled */
- if (msi2intx)
- pci_enable_msi(match->dev);
-#endif
- }
- }
+ if (!match)
+ goto out;
- if ((match->irq_requested_type & KVM_ASSIGNED_DEV_HOST_MSI) &&
- (match->irq_requested_type & KVM_ASSIGNED_DEV_GUEST_MSI))
- current_flags |= KVM_DEV_IRQ_ASSIGN_ENABLE_MSI;
+ host_irq_type = (assigned_irq->flags & KVM_DEV_IRQ_HOST_MASK);
+ guest_irq_type = (assigned_irq->flags & KVM_DEV_IRQ_GUEST_MASK);
- changed_flags = assigned_irq->flags ^ current_flags;
+ r = -EINVAL;
+ /* can only assign one type at a time */
+ if (hweight_long(host_irq_type) > 1)
+ goto out;
+ if (hweight_long(guest_irq_type) > 1)
+ goto out;
+ if (host_irq_type == 0 && guest_irq_type == 0)
+ goto out;
- if ((changed_flags & KVM_DEV_IRQ_ASSIGN_MSI_ACTION) ||
- (msi2intx && match->dev->msi_enabled)) {
-#ifdef CONFIG_X86
- r = assigned_device_update_msi(kvm, match, assigned_irq);
- if (r) {
- printk(KERN_WARNING "kvm: failed to enable "
- "MSI device!\n");
- goto out_release;
- }
-#else
- r = -ENOTTY;
-#endif
- } else if (assigned_irq->host_irq == 0 && match->dev->irq == 0) {
- /* Host device IRQ 0 means don't support INTx */
- if (!msi2intx) {
- printk(KERN_WARNING
- "kvm: wait device to enable MSI!\n");
- r = 0;
- } else {
- printk(KERN_WARNING
- "kvm: failed to enable MSI device!\n");
- r = -ENOTTY;
- goto out_release;
- }
- } else {
- /* Non-sharing INTx mode */
- r = assigned_device_update_intx(kvm, match, assigned_irq);
- if (r) {
- printk(KERN_WARNING "kvm: failed to enable "
- "INTx device!\n");
- goto out_release;
- }
- }
+ r = 0;
+ if (host_irq_type)
+ r = assign_host_irq(kvm, match, host_irq_type);
+ if (r)
+ goto out;
+ if (guest_irq_type)
+ r = assign_guest_irq(kvm, match, assigned_irq, guest_irq_type);
+out:
mutex_unlock(&kvm->lock);
return r;
-out_release:
+}
+
+static int kvm_vm_ioctl_deassign_dev_irq(struct kvm *kvm,
+ struct kvm_assigned_irq
+ *assigned_irq)
+{
+ int r = -ENODEV;
+ struct kvm_assigned_dev_kernel *match;
+
+ mutex_lock(&kvm->lock);
+
+ match = kvm_find_assigned_dev(&kvm->arch.assigned_dev_head,
+ assigned_irq->assigned_dev_id);
+ if (!match)
+ goto out;
+
+ r = kvm_deassign_irq(kvm, match, assigned_irq->flags);
+out:
mutex_unlock(&kvm->lock);
- kvm_free_assigned_device(kvm, match);
return r;
}
@@ -427,7 +588,7 @@ static int kvm_vm_ioctl_assign_device(struct kvm *kvm,
assigned_dev->assigned_dev_id);
if (match) {
/* device already assigned */
- r = -EINVAL;
+ r = -EEXIST;
goto out;
}
@@ -464,8 +625,12 @@ static int kvm_vm_ioctl_assign_device(struct kvm *kvm,
match->host_devfn = assigned_dev->devfn;
match->flags = assigned_dev->flags;
match->dev = dev;
+ spin_lock_init(&match->assigned_dev_lock);
match->irq_source_id = -1;
match->kvm = kvm;
+ match->ack_notifier.irq_acked = kvm_assigned_dev_ack_irq;
+ INIT_WORK(&match->interrupt_work,
+ kvm_assigned_dev_interrupt_work_handler);
list_add(&match->list, &kvm->arch.assigned_dev_head);
@@ -878,6 +1043,8 @@ static void kvm_destroy_vm(struct kvm *kvm)
#endif
#if defined(CONFIG_MMU_NOTIFIER) && defined(KVM_ARCH_WANT_MMU_NOTIFIER)
mmu_notifier_unregister(&kvm->mmu_notifier, kvm->mm);
+#else
+ kvm_arch_flush_shadow(kvm);
#endif
kvm_arch_destroy_vm(kvm);
mmdrop(mm);
@@ -919,9 +1086,8 @@ int __kvm_set_memory_region(struct kvm *kvm,
{
int r;
gfn_t base_gfn;
- unsigned long npages;
- int largepages;
- unsigned long i;
+ unsigned long npages, ugfn;
+ unsigned long largepages, i;
struct kvm_memory_slot *memslot;
struct kvm_memory_slot old, new;
@@ -1010,6 +1176,14 @@ int __kvm_set_memory_region(struct kvm *kvm,
new.lpage_info[0].write_count = 1;
if ((base_gfn+npages) % KVM_PAGES_PER_HPAGE)
new.lpage_info[largepages-1].write_count = 1;
+ ugfn = new.userspace_addr >> PAGE_SHIFT;
+ /*
+ * If the gfn and userspace address are not aligned wrt each
+ * other, disable large page support for this slot
+ */
+ if ((base_gfn ^ ugfn) & (KVM_PAGES_PER_HPAGE - 1))
+ for (i = 0; i < largepages; ++i)
+ new.lpage_info[i].write_count = 1;
}
/* Allocate page dirty bitmap if needed */
@@ -1043,8 +1217,10 @@ int __kvm_set_memory_region(struct kvm *kvm,
kvm_free_physmem_slot(&old, npages ? &new : NULL);
/* Slot deletion case: we have to update the current slot */
+ spin_lock(&kvm->mmu_lock);
if (!npages)
*memslot = old;
+ spin_unlock(&kvm->mmu_lock);
#ifdef CONFIG_DMAR
/* map the pages in iommu page table */
r = kvm_iommu_map_pages(kvm, base_gfn, npages);
@@ -1454,12 +1630,14 @@ void kvm_vcpu_block(struct kvm_vcpu *vcpu)
for (;;) {
prepare_to_wait(&vcpu->wq, &wait, TASK_INTERRUPTIBLE);
- if (kvm_cpu_has_interrupt(vcpu) ||
- kvm_cpu_has_pending_timer(vcpu) ||
- kvm_arch_vcpu_runnable(vcpu)) {
+ if ((kvm_arch_interrupt_allowed(vcpu) &&
+ kvm_cpu_has_interrupt(vcpu)) ||
+ kvm_arch_vcpu_runnable(vcpu)) {
set_bit(KVM_REQ_UNHALT, &vcpu->requests);
break;
}
+ if (kvm_cpu_has_pending_timer(vcpu))
+ break;
if (signal_pending(current))
break;
@@ -1593,6 +1771,88 @@ static int kvm_vcpu_ioctl_set_sigmask(struct kvm_vcpu *vcpu, sigset_t *sigset)
return 0;
}
+#ifdef __KVM_HAVE_MSIX
+static int kvm_vm_ioctl_set_msix_nr(struct kvm *kvm,
+ struct kvm_assigned_msix_nr *entry_nr)
+{
+ int r = 0;
+ struct kvm_assigned_dev_kernel *adev;
+
+ mutex_lock(&kvm->lock);
+
+ adev = kvm_find_assigned_dev(&kvm->arch.assigned_dev_head,
+ entry_nr->assigned_dev_id);
+ if (!adev) {
+ r = -EINVAL;
+ goto msix_nr_out;
+ }
+
+ if (adev->entries_nr == 0) {
+ adev->entries_nr = entry_nr->entry_nr;
+ if (adev->entries_nr == 0 ||
+ adev->entries_nr >= KVM_MAX_MSIX_PER_DEV) {
+ r = -EINVAL;
+ goto msix_nr_out;
+ }
+
+ adev->host_msix_entries = kzalloc(sizeof(struct msix_entry) *
+ entry_nr->entry_nr,
+ GFP_KERNEL);
+ if (!adev->host_msix_entries) {
+ r = -ENOMEM;
+ goto msix_nr_out;
+ }
+ adev->guest_msix_entries = kzalloc(
+ sizeof(struct kvm_guest_msix_entry) *
+ entry_nr->entry_nr, GFP_KERNEL);
+ if (!adev->guest_msix_entries) {
+ kfree(adev->host_msix_entries);
+ r = -ENOMEM;
+ goto msix_nr_out;
+ }
+ } else /* Not allowed set MSI-X number twice */
+ r = -EINVAL;
+msix_nr_out:
+ mutex_unlock(&kvm->lock);
+ return r;
+}
+
+static int kvm_vm_ioctl_set_msix_entry(struct kvm *kvm,
+ struct kvm_assigned_msix_entry *entry)
+{
+ int r = 0, i;
+ struct kvm_assigned_dev_kernel *adev;
+
+ mutex_lock(&kvm->lock);
+
+ adev = kvm_find_assigned_dev(&kvm->arch.assigned_dev_head,
+ entry->assigned_dev_id);
+
+ if (!adev) {
+ r = -EINVAL;
+ goto msix_entry_out;
+ }
+
+ for (i = 0; i < adev->entries_nr; i++)
+ if (adev->guest_msix_entries[i].vector == 0 ||
+ adev->guest_msix_entries[i].entry == entry->entry) {
+ adev->guest_msix_entries[i].entry = entry->entry;
+ adev->guest_msix_entries[i].vector = entry->gsi;
+ adev->host_msix_entries[i].entry = entry->entry;
+ break;
+ }
+ if (i == adev->entries_nr) {
+ r = -ENOSPC;
+ goto msix_entry_out;
+ }
+
+msix_entry_out:
+ mutex_unlock(&kvm->lock);
+
+ return r;
+}
+#endif
+
static long kvm_vcpu_ioctl(struct file *filp,
unsigned int ioctl, unsigned long arg)
{
@@ -1864,6 +2124,11 @@ static long kvm_vm_ioctl(struct file *filp,
break;
}
case KVM_ASSIGN_IRQ: {
+ r = -EOPNOTSUPP;
+ break;
+ }
+#ifdef KVM_CAP_ASSIGN_DEV_IRQ
+ case KVM_ASSIGN_DEV_IRQ: {
struct kvm_assigned_irq assigned_irq;
r = -EFAULT;
@@ -1874,6 +2139,18 @@ static long kvm_vm_ioctl(struct file *filp,
goto out;
break;
}
+ case KVM_DEASSIGN_DEV_IRQ: {
+ struct kvm_assigned_irq assigned_irq;
+
+ r = -EFAULT;
+ if (copy_from_user(&assigned_irq, argp, sizeof assigned_irq))
+ goto out;
+ r = kvm_vm_ioctl_deassign_dev_irq(kvm, &assigned_irq);
+ if (r)
+ goto out;
+ break;
+ }
+#endif
#endif
#ifdef KVM_CAP_DEVICE_DEASSIGNMENT
case KVM_DEASSIGN_PCI_DEVICE: {
@@ -1917,7 +2194,29 @@ static long kvm_vm_ioctl(struct file *filp,
vfree(entries);
break;
}
+#ifdef __KVM_HAVE_MSIX
+ case KVM_ASSIGN_SET_MSIX_NR: {
+ struct kvm_assigned_msix_nr entry_nr;
+ r = -EFAULT;
+ if (copy_from_user(&entry_nr, argp, sizeof entry_nr))
+ goto out;
+ r = kvm_vm_ioctl_set_msix_nr(kvm, &entry_nr);
+ if (r)
+ goto out;
+ break;
+ }
+ case KVM_ASSIGN_SET_MSIX_ENTRY: {
+ struct kvm_assigned_msix_entry entry;
+ r = -EFAULT;
+ if (copy_from_user(&entry, argp, sizeof entry))
+ goto out;
+ r = kvm_vm_ioctl_set_msix_entry(kvm, &entry);
+ if (r)
+ goto out;
+ break;
+ }
#endif
+#endif /* KVM_CAP_IRQ_ROUTING */
default:
r = kvm_arch_vm_ioctl(filp, ioctl, arg);
}
@@ -2112,15 +2411,15 @@ EXPORT_SYMBOL_GPL(kvm_handle_fault_on_reboot);
static int kvm_reboot(struct notifier_block *notifier, unsigned long val,
void *v)
{
- if (val == SYS_RESTART) {
- /*
- * Some (well, at least mine) BIOSes hang on reboot if
- * in vmx root mode.
- */
- printk(KERN_INFO "kvm: exiting hardware virtualization\n");
- kvm_rebooting = true;
- on_each_cpu(hardware_disable, NULL, 1);
- }
+ /*
+ * Some (well, at least mine) BIOSes hang on reboot if
+ * in vmx root mode.
+ *
+ * And Intel TXT required VMX off for all cpu when system shutdown.
+ */
+ printk(KERN_INFO "kvm: exiting hardware virtualization\n");
+ kvm_rebooting = true;
+ on_each_cpu(hardware_disable, NULL, 1);
return NOTIFY_OK;
}
@@ -2354,9 +2653,6 @@ int kvm_init(void *opaque, unsigned int vcpu_size,
kvm_preempt_ops.sched_in = kvm_sched_in;
kvm_preempt_ops.sched_out = kvm_sched_out;
-#ifndef CONFIG_X86
- msi2intx = 0;
-#endif
return 0;
OpenPOWER on IntegriCloud