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-rw-r--r--arch/s390/include/asm/kvm_host.h2
-rw-r--r--arch/s390/kvm/intercept.c18
-rw-r--r--arch/s390/kvm/kvm-s390.c32
3 files changed, 40 insertions, 12 deletions
diff --git a/arch/s390/include/asm/kvm_host.h b/arch/s390/include/asm/kvm_host.h
index e9bcdca..8264b0b 100644
--- a/arch/s390/include/asm/kvm_host.h
+++ b/arch/s390/include/asm/kvm_host.h
@@ -227,6 +227,7 @@ struct kvm_vcpu_arch {
struct cpuid cpu_id;
u64 stidp_data;
};
+ struct gmap *gmap;
};
struct kvm_vm_stat {
@@ -237,6 +238,7 @@ struct kvm_arch{
struct sca_block *sca;
debug_info_t *dbf;
struct kvm_s390_float_interrupt float_int;
+ struct gmap *gmap;
};
extern int sie64a(struct kvm_s390_sie_block *, unsigned long *);
diff --git a/arch/s390/kvm/intercept.c b/arch/s390/kvm/intercept.c
index b531205..654fc1f 100644
--- a/arch/s390/kvm/intercept.c
+++ b/arch/s390/kvm/intercept.c
@@ -160,6 +160,7 @@ static int handle_stop(struct kvm_vcpu *vcpu)
static int handle_validity(struct kvm_vcpu *vcpu)
{
+ unsigned long vmaddr;
int viwhy = vcpu->arch.sie_block->ipb >> 16;
int rc;
@@ -170,12 +171,27 @@ static int handle_validity(struct kvm_vcpu *vcpu)
vcpu->arch.sie_block->gmsor +
vcpu->arch.sie_block->prefix,
2*PAGE_SIZE);
- if (rc)
+ if (rc) {
/* user will receive sigsegv, exit to user */
rc = -EOPNOTSUPP;
+ goto out;
+ }
+ vmaddr = gmap_fault(vcpu->arch.sie_block->prefix,
+ vcpu->arch.gmap);
+ if (IS_ERR_VALUE(vmaddr)) {
+ rc = -EOPNOTSUPP;
+ goto out;
+ }
+ vmaddr = gmap_fault(vcpu->arch.sie_block->prefix + PAGE_SIZE,
+ vcpu->arch.gmap);
+ if (IS_ERR_VALUE(vmaddr)) {
+ rc = -EOPNOTSUPP;
+ goto out;
+ }
} else
rc = -EOPNOTSUPP;
+out:
if (rc)
VCPU_EVENT(vcpu, 2, "unhandled validity intercept code %d",
viwhy);
diff --git a/arch/s390/kvm/kvm-s390.c b/arch/s390/kvm/kvm-s390.c
index 123ebea..3ebb4ba 100644
--- a/arch/s390/kvm/kvm-s390.c
+++ b/arch/s390/kvm/kvm-s390.c
@@ -190,7 +190,13 @@ int kvm_arch_init_vm(struct kvm *kvm)
debug_register_view(kvm->arch.dbf, &debug_sprintf_view);
VM_EVENT(kvm, 3, "%s", "vm created");
+ kvm->arch.gmap = gmap_alloc(current->mm);
+ if (!kvm->arch.gmap)
+ goto out_nogmap;
+
return 0;
+out_nogmap:
+ debug_unregister(kvm->arch.dbf);
out_nodbf:
free_page((unsigned long)(kvm->arch.sca));
out_err:
@@ -235,11 +241,13 @@ void kvm_arch_destroy_vm(struct kvm *kvm)
kvm_free_vcpus(kvm);
free_page((unsigned long)(kvm->arch.sca));
debug_unregister(kvm->arch.dbf);
+ gmap_free(kvm->arch.gmap);
}
/* Section: vcpu related */
int kvm_arch_vcpu_init(struct kvm_vcpu *vcpu)
{
+ vcpu->arch.gmap = vcpu->kvm->arch.gmap;
return 0;
}
@@ -285,7 +293,7 @@ static void kvm_s390_vcpu_initial_reset(struct kvm_vcpu *vcpu)
int kvm_arch_vcpu_setup(struct kvm_vcpu *vcpu)
{
- atomic_set(&vcpu->arch.sie_block->cpuflags, CPUSTAT_ZARCH);
+ atomic_set(&vcpu->arch.sie_block->cpuflags, CPUSTAT_ZARCH | CPUSTAT_SM);
set_bit(KVM_REQ_MMU_RELOAD, &vcpu->requests);
vcpu->arch.sie_block->ecb = 6;
vcpu->arch.sie_block->eca = 0xC1002001U;
@@ -454,6 +462,7 @@ static void __vcpu_run(struct kvm_vcpu *vcpu)
local_irq_disable();
kvm_guest_enter();
local_irq_enable();
+ gmap_enable(vcpu->arch.gmap);
VCPU_EVENT(vcpu, 6, "entering sie flags %x",
atomic_read(&vcpu->arch.sie_block->cpuflags));
if (sie64a(vcpu->arch.sie_block, vcpu->arch.guest_gprs)) {
@@ -462,6 +471,7 @@ static void __vcpu_run(struct kvm_vcpu *vcpu)
}
VCPU_EVENT(vcpu, 6, "exit sie icptcode %d",
vcpu->arch.sie_block->icptcode);
+ gmap_disable(vcpu->arch.gmap);
local_irq_disable();
kvm_guest_exit();
local_irq_enable();
@@ -479,13 +489,6 @@ rerun_vcpu:
if (test_and_clear_bit(KVM_REQ_MMU_RELOAD, &vcpu->requests))
kvm_s390_vcpu_set_mem(vcpu);
- /* verify, that memory has been registered */
- if (!vcpu->arch.sie_block->gmslm) {
- vcpu_put(vcpu);
- VCPU_EVENT(vcpu, 3, "%s", "no memory registered to run vcpu");
- return -EINVAL;
- }
-
if (vcpu->sigset_active)
sigprocmask(SIG_SETMASK, &vcpu->sigset, &sigsaved);
@@ -681,10 +684,10 @@ int kvm_arch_prepare_memory_region(struct kvm *kvm,
if (mem->guest_phys_addr)
return -EINVAL;
- if (mem->userspace_addr & (PAGE_SIZE - 1))
+ if (mem->userspace_addr & 0xffffful)
return -EINVAL;
- if (mem->memory_size & (PAGE_SIZE - 1))
+ if (mem->memory_size & 0xffffful)
return -EINVAL;
if (!user_alloc)
@@ -698,15 +701,22 @@ void kvm_arch_commit_memory_region(struct kvm *kvm,
struct kvm_memory_slot old,
int user_alloc)
{
- int i;
+ int i, rc;
struct kvm_vcpu *vcpu;
+
+ rc = gmap_map_segment(kvm->arch.gmap, mem->userspace_addr,
+ mem->guest_phys_addr, mem->memory_size);
+ if (rc)
+ return;
+
/* request update of sie control block for all available vcpus */
kvm_for_each_vcpu(i, vcpu, kvm) {
if (test_and_set_bit(KVM_REQ_MMU_RELOAD, &vcpu->requests))
continue;
kvm_s390_inject_sigp_stop(vcpu, ACTION_RELOADVCPU_ON_STOP);
}
+ return;
}
void kvm_arch_flush_shadow(struct kvm *kvm)
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