KVM: Move arch dependent files to new directory arch/x86/kvm/

This paves the way for multiple architecture support.  Note that while
ioapic.c could potentially be shared with ia64, it is also moved.

Signed-off-by: Avi Kivity <avi@qumranet.com>

1 files changed, 0 insertions, 2673 deletions

diff --git a/drivers/kvm/vmx.c b/drivers/kvm/vmx.c
deleted file mode 100644
index 11ca234..0000000
--- a/drivers/kvm/vmx.c
+++ /dev/null
@@ -1,2673 +0,0 @@
-/*
- * Kernel-based Virtual Machine driver for Linux
- *
- * This module enables machines with Intel VT-x extensions to run virtual
- * machines without emulation or binary translation.
- *
- * Copyright (C) 2006 Qumranet, Inc.
- *
- * Authors:
- *   Avi Kivity   <avi@qumranet.com>
- *   Yaniv Kamay  <yaniv@qumranet.com>
- *
- * This work is licensed under the terms of the GNU GPL, version 2.  See
- * the COPYING file in the top-level directory.
- *
- */
-
-#include "kvm.h"
-#include "x86.h"
-#include "x86_emulate.h"
-#include "irq.h"
-#include "vmx.h"
-#include "segment_descriptor.h"
-#include "mmu.h"
-
-#include <linux/module.h>
-#include <linux/kernel.h>
-#include <linux/mm.h>
-#include <linux/highmem.h>
-#include <linux/sched.h>
-#include <linux/moduleparam.h>
-
-#include <asm/io.h>
-#include <asm/desc.h>
-
-MODULE_AUTHOR("Qumranet");
-MODULE_LICENSE("GPL");
-
-static int bypass_guest_pf = 1;
-module_param(bypass_guest_pf, bool, 0);
-
-struct vmcs {
-	u32 revision_id;
-	u32 abort;
-	char data[0];
-};
-
-struct vcpu_vmx {
-	struct kvm_vcpu       vcpu;
-	int                   launched;
-	u8                    fail;
-	u32                   idt_vectoring_info;
-	struct kvm_msr_entry *guest_msrs;
-	struct kvm_msr_entry *host_msrs;
-	int                   nmsrs;
-	int                   save_nmsrs;
-	int                   msr_offset_efer;
-#ifdef CONFIG_X86_64
-	int                   msr_offset_kernel_gs_base;
-#endif
-	struct vmcs          *vmcs;
-	struct {
-		int           loaded;
-		u16           fs_sel, gs_sel, ldt_sel;
-		int           gs_ldt_reload_needed;
-		int           fs_reload_needed;
-		int           guest_efer_loaded;
-	} host_state;
-	struct {
-		struct {
-			bool pending;
-			u8 vector;
-			unsigned rip;
-		} irq;
-	} rmode;
-};
-
-static inline struct vcpu_vmx *to_vmx(struct kvm_vcpu *vcpu)
-{
-	return container_of(vcpu, struct vcpu_vmx, vcpu);
-}
-
-static int init_rmode_tss(struct kvm *kvm);
-
-static DEFINE_PER_CPU(struct vmcs *, vmxarea);
-static DEFINE_PER_CPU(struct vmcs *, current_vmcs);
-
-static struct page *vmx_io_bitmap_a;
-static struct page *vmx_io_bitmap_b;
-
-static struct vmcs_config {
-	int size;
-	int order;
-	u32 revision_id;
-	u32 pin_based_exec_ctrl;
-	u32 cpu_based_exec_ctrl;
-	u32 cpu_based_2nd_exec_ctrl;
-	u32 vmexit_ctrl;
-	u32 vmentry_ctrl;
-} vmcs_config;
-
-#define VMX_SEGMENT_FIELD(seg)					\
-	[VCPU_SREG_##seg] = {                                   \
-		.selector = GUEST_##seg##_SELECTOR,		\
-		.base = GUEST_##seg##_BASE,		   	\
-		.limit = GUEST_##seg##_LIMIT,		   	\
-		.ar_bytes = GUEST_##seg##_AR_BYTES,	   	\
-	}
-
-static struct kvm_vmx_segment_field {
-	unsigned selector;
-	unsigned base;
-	unsigned limit;
-	unsigned ar_bytes;
-} kvm_vmx_segment_fields[] = {
-	VMX_SEGMENT_FIELD(CS),
-	VMX_SEGMENT_FIELD(DS),
-	VMX_SEGMENT_FIELD(ES),
-	VMX_SEGMENT_FIELD(FS),
-	VMX_SEGMENT_FIELD(GS),
-	VMX_SEGMENT_FIELD(SS),
-	VMX_SEGMENT_FIELD(TR),
-	VMX_SEGMENT_FIELD(LDTR),
-};
-
-/*
- * Keep MSR_K6_STAR at the end, as setup_msrs() will try to optimize it
- * away by decrementing the array size.
- */
-static const u32 vmx_msr_index[] = {
-#ifdef CONFIG_X86_64
-	MSR_SYSCALL_MASK, MSR_LSTAR, MSR_CSTAR, MSR_KERNEL_GS_BASE,
-#endif
-	MSR_EFER, MSR_K6_STAR,
-};
-#define NR_VMX_MSR ARRAY_SIZE(vmx_msr_index)
-
-static void load_msrs(struct kvm_msr_entry *e, int n)
-{
-	int i;
-
-	for (i = 0; i < n; ++i)
-		wrmsrl(e[i].index, e[i].data);
-}
-
-static void save_msrs(struct kvm_msr_entry *e, int n)
-{
-	int i;
-
-	for (i = 0; i < n; ++i)
-		rdmsrl(e[i].index, e[i].data);
-}
-
-static inline int is_page_fault(u32 intr_info)
-{
-	return (intr_info & (INTR_INFO_INTR_TYPE_MASK | INTR_INFO_VECTOR_MASK |
-			     INTR_INFO_VALID_MASK)) ==
-		(INTR_TYPE_EXCEPTION | PF_VECTOR | INTR_INFO_VALID_MASK);
-}
-
-static inline int is_no_device(u32 intr_info)
-{
-	return (intr_info & (INTR_INFO_INTR_TYPE_MASK | INTR_INFO_VECTOR_MASK |
-			     INTR_INFO_VALID_MASK)) ==
-		(INTR_TYPE_EXCEPTION | NM_VECTOR | INTR_INFO_VALID_MASK);
-}
-
-static inline int is_invalid_opcode(u32 intr_info)
-{
-	return (intr_info & (INTR_INFO_INTR_TYPE_MASK | INTR_INFO_VECTOR_MASK |
-			     INTR_INFO_VALID_MASK)) ==
-		(INTR_TYPE_EXCEPTION | UD_VECTOR | INTR_INFO_VALID_MASK);
-}
-
-static inline int is_external_interrupt(u32 intr_info)
-{
-	return (intr_info & (INTR_INFO_INTR_TYPE_MASK | INTR_INFO_VALID_MASK))
-		== (INTR_TYPE_EXT_INTR | INTR_INFO_VALID_MASK);
-}
-
-static inline int cpu_has_vmx_tpr_shadow(void)
-{
-	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)));
-}
-
-static inline int cpu_has_secondary_exec_ctrls(void)
-{
-	return (vmcs_config.cpu_based_exec_ctrl &
-		CPU_BASED_ACTIVATE_SECONDARY_CONTROLS);
-}
-
-static inline int cpu_has_vmx_virtualize_apic_accesses(void)
-{
-	return (vmcs_config.cpu_based_2nd_exec_ctrl &
-		SECONDARY_EXEC_VIRTUALIZE_APIC_ACCESSES);
-}
-
-static inline int vm_need_virtualize_apic_accesses(struct kvm *kvm)
-{
-	return ((cpu_has_vmx_virtualize_apic_accesses()) &&
-		(irqchip_in_kernel(kvm)));
-}
-
-static int __find_msr_index(struct vcpu_vmx *vmx, u32 msr)
-{
-	int i;
-
-	for (i = 0; i < vmx->nmsrs; ++i)
-		if (vmx->guest_msrs[i].index == msr)
-			return i;
-	return -1;
-}
-
-static struct kvm_msr_entry *find_msr_entry(struct vcpu_vmx *vmx, u32 msr)
-{
-	int i;
-
-	i = __find_msr_index(vmx, msr);
-	if (i >= 0)
-		return &vmx->guest_msrs[i];
-	return NULL;
-}
-
-static void vmcs_clear(struct vmcs *vmcs)
-{
-	u64 phys_addr = __pa(vmcs);
-	u8 error;
-
-	asm volatile (ASM_VMX_VMCLEAR_RAX "; setna %0"
-		      : "=g"(error) : "a"(&phys_addr), "m"(phys_addr)
-		      : "cc", "memory");
-	if (error)
-		printk(KERN_ERR "kvm: vmclear fail: %p/%llx\n",
-		       vmcs, phys_addr);
-}
-
-static void __vcpu_clear(void *arg)
-{
-	struct vcpu_vmx *vmx = arg;
-	int cpu = raw_smp_processor_id();
-
-	if (vmx->vcpu.cpu == cpu)
-		vmcs_clear(vmx->vmcs);
-	if (per_cpu(current_vmcs, cpu) == vmx->vmcs)
-		per_cpu(current_vmcs, cpu) = NULL;
-	rdtscll(vmx->vcpu.arch.host_tsc);
-}
-
-static void vcpu_clear(struct vcpu_vmx *vmx)
-{
-	if (vmx->vcpu.cpu == -1)
-		return;
-	smp_call_function_single(vmx->vcpu.cpu, __vcpu_clear, vmx, 0, 1);
-	vmx->launched = 0;
-}
-
-static unsigned long vmcs_readl(unsigned long field)
-{
-	unsigned long value;
-
-	asm volatile (ASM_VMX_VMREAD_RDX_RAX
-		      : "=a"(value) : "d"(field) : "cc");
-	return value;
-}
-
-static u16 vmcs_read16(unsigned long field)
-{
-	return vmcs_readl(field);
-}
-
-static u32 vmcs_read32(unsigned long field)
-{
-	return vmcs_readl(field);
-}
-
-static u64 vmcs_read64(unsigned long field)
-{
-#ifdef CONFIG_X86_64
-	return vmcs_readl(field);
-#else
-	return vmcs_readl(field) | ((u64)vmcs_readl(field+1) << 32);
-#endif
-}
-
-static noinline void vmwrite_error(unsigned long field, unsigned long value)
-{
-	printk(KERN_ERR "vmwrite error: reg %lx value %lx (err %d)\n",
-	       field, value, vmcs_read32(VM_INSTRUCTION_ERROR));
-	dump_stack();
-}
-
-static void vmcs_writel(unsigned long field, unsigned long value)
-{
-	u8 error;
-
-	asm volatile (ASM_VMX_VMWRITE_RAX_RDX "; setna %0"
-		       : "=q"(error) : "a"(value), "d"(field) : "cc");
-	if (unlikely(error))
-		vmwrite_error(field, value);
-}
-
-static void vmcs_write16(unsigned long field, u16 value)
-{
-	vmcs_writel(field, value);
-}
-
-static void vmcs_write32(unsigned long field, u32 value)
-{
-	vmcs_writel(field, value);
-}
-
-static void vmcs_write64(unsigned long field, u64 value)
-{
-#ifdef CONFIG_X86_64
-	vmcs_writel(field, value);
-#else
-	vmcs_writel(field, value);
-	asm volatile ("");
-	vmcs_writel(field+1, value >> 32);
-#endif
-}
-
-static void vmcs_clear_bits(unsigned long field, u32 mask)
-{
-	vmcs_writel(field, vmcs_readl(field) & ~mask);
-}
-
-static void vmcs_set_bits(unsigned long field, u32 mask)
-{
-	vmcs_writel(field, vmcs_readl(field) | mask);
-}
-
-static void update_exception_bitmap(struct kvm_vcpu *vcpu)
-{
-	u32 eb;
-
-	eb = (1u << PF_VECTOR) | (1u << UD_VECTOR);
-	if (!vcpu->fpu_active)
-		eb |= 1u << NM_VECTOR;
-	if (vcpu->guest_debug.enabled)
-		eb |= 1u << 1;
-	if (vcpu->arch.rmode.active)
-		eb = ~0;
-	vmcs_write32(EXCEPTION_BITMAP, eb);
-}
-
-static void reload_tss(void)
-{
-#ifndef CONFIG_X86_64
-
-	/*
-	 * VT restores TR but not its size.  Useless.
-	 */
-	struct descriptor_table gdt;
-	struct segment_descriptor *descs;
-
-	get_gdt(&gdt);
-	descs = (void *)gdt.base;
-	descs[GDT_ENTRY_TSS].type = 9; /* available TSS */
-	load_TR_desc();
-#endif
-}
-
-static void load_transition_efer(struct vcpu_vmx *vmx)
-{
-	int efer_offset = vmx->msr_offset_efer;
-	u64 host_efer = vmx->host_msrs[efer_offset].data;
-	u64 guest_efer = vmx->guest_msrs[efer_offset].data;
-	u64 ignore_bits;
-
-	if (efer_offset < 0)
-		return;
-	/*
-	 * NX is emulated; LMA and LME handled by hardware; SCE meaninless
-	 * outside long mode
-	 */
-	ignore_bits = EFER_NX | EFER_SCE;
-#ifdef CONFIG_X86_64
-	ignore_bits |= EFER_LMA | EFER_LME;
-	/* SCE is meaningful only in long mode on Intel */
-	if (guest_efer & EFER_LMA)
-		ignore_bits &= ~(u64)EFER_SCE;
-#endif
-	if ((guest_efer & ~ignore_bits) == (host_efer & ~ignore_bits))
-		return;
-
-	vmx->host_state.guest_efer_loaded = 1;
-	guest_efer &= ~ignore_bits;
-	guest_efer |= host_efer & ignore_bits;
-	wrmsrl(MSR_EFER, guest_efer);
-	vmx->vcpu.stat.efer_reload++;
-}
-
-static void reload_host_efer(struct vcpu_vmx *vmx)
-{
-	if (vmx->host_state.guest_efer_loaded) {
-		vmx->host_state.guest_efer_loaded = 0;
-		load_msrs(vmx->host_msrs + vmx->msr_offset_efer, 1);
-	}
-}
-
-static void vmx_save_host_state(struct kvm_vcpu *vcpu)
-{
-	struct vcpu_vmx *vmx = to_vmx(vcpu);
-
-	if (vmx->host_state.loaded)
-		return;
-
-	vmx->host_state.loaded = 1;
-	/*
-	 * Set host fs and gs selectors.  Unfortunately, 22.2.3 does not
-	 * allow segment selectors with cpl > 0 or ti == 1.
-	 */
-	vmx->host_state.ldt_sel = read_ldt();
-	vmx->host_state.gs_ldt_reload_needed = vmx->host_state.ldt_sel;
-	vmx->host_state.fs_sel = read_fs();
-	if (!(vmx->host_state.fs_sel & 7)) {
-		vmcs_write16(HOST_FS_SELECTOR, vmx->host_state.fs_sel);
-		vmx->host_state.fs_reload_needed = 0;
-	} else {
-		vmcs_write16(HOST_FS_SELECTOR, 0);
-		vmx->host_state.fs_reload_needed = 1;
-	}
-	vmx->host_state.gs_sel = read_gs();
-	if (!(vmx->host_state.gs_sel & 7))
-		vmcs_write16(HOST_GS_SELECTOR, vmx->host_state.gs_sel);
-	else {
-		vmcs_write16(HOST_GS_SELECTOR, 0);
-		vmx->host_state.gs_ldt_reload_needed = 1;
-	}
-
-#ifdef CONFIG_X86_64
-	vmcs_writel(HOST_FS_BASE, read_msr(MSR_FS_BASE));
-	vmcs_writel(HOST_GS_BASE, read_msr(MSR_GS_BASE));
-#else
-	vmcs_writel(HOST_FS_BASE, segment_base(vmx->host_state.fs_sel));
-	vmcs_writel(HOST_GS_BASE, segment_base(vmx->host_state.gs_sel));
-#endif
-
-#ifdef CONFIG_X86_64
-	if (is_long_mode(&vmx->vcpu))
-		save_msrs(vmx->host_msrs +
-			  vmx->msr_offset_kernel_gs_base, 1);
-
-#endif
-	load_msrs(vmx->guest_msrs, vmx->save_nmsrs);
-	load_transition_efer(vmx);
-}
-
-static void vmx_load_host_state(struct vcpu_vmx *vmx)
-{
-	unsigned long flags;
-
-	if (!vmx->host_state.loaded)
-		return;
-
-	++vmx->vcpu.stat.host_state_reload;
-	vmx->host_state.loaded = 0;
-	if (vmx->host_state.fs_reload_needed)
-		load_fs(vmx->host_state.fs_sel);
-	if (vmx->host_state.gs_ldt_reload_needed) {
-		load_ldt(vmx->host_state.ldt_sel);
-		/*
-		 * If we have to reload gs, we must take care to
-		 * preserve our gs base.
-		 */
-		local_irq_save(flags);
-		load_gs(vmx->host_state.gs_sel);
-#ifdef CONFIG_X86_64
-		wrmsrl(MSR_GS_BASE, vmcs_readl(HOST_GS_BASE));
-#endif
-		local_irq_restore(flags);
-	}
-	reload_tss();
-	save_msrs(vmx->guest_msrs, vmx->save_nmsrs);
-	load_msrs(vmx->host_msrs, vmx->save_nmsrs);
-	reload_host_efer(vmx);
-}
-
-/*
- * Switches to specified vcpu, until a matching vcpu_put(), but assumes
- * vcpu mutex is already taken.
- */
-static void vmx_vcpu_load(struct kvm_vcpu *vcpu, int cpu)
-{
-	struct vcpu_vmx *vmx = to_vmx(vcpu);
-	u64 phys_addr = __pa(vmx->vmcs);
-	u64 tsc_this, delta;
-
-	if (vcpu->cpu != cpu) {
-		vcpu_clear(vmx);
-		kvm_migrate_apic_timer(vcpu);
-	}
-
-	if (per_cpu(current_vmcs, cpu) != vmx->vmcs) {
-		u8 error;
-
-		per_cpu(current_vmcs, cpu) = vmx->vmcs;
-		asm volatile (ASM_VMX_VMPTRLD_RAX "; setna %0"
-			      : "=g"(error) : "a"(&phys_addr), "m"(phys_addr)
-			      : "cc");
-		if (error)
-			printk(KERN_ERR "kvm: vmptrld %p/%llx fail\n",
-			       vmx->vmcs, phys_addr);
-	}
-
-	if (vcpu->cpu != cpu) {
-		struct descriptor_table dt;
-		unsigned long sysenter_esp;
-
-		vcpu->cpu = cpu;
-		/*
-		 * Linux uses per-cpu TSS and GDT, so set these when switching
-		 * processors.
-		 */
-		vmcs_writel(HOST_TR_BASE, read_tr_base()); /* 22.2.4 */
-		get_gdt(&dt);
-		vmcs_writel(HOST_GDTR_BASE, dt.base);   /* 22.2.4 */
-
-		rdmsrl(MSR_IA32_SYSENTER_ESP, sysenter_esp);
-		vmcs_writel(HOST_IA32_SYSENTER_ESP, sysenter_esp); /* 22.2.3 */
-
-		/*
-		 * Make sure the time stamp counter is monotonous.
-		 */
-		rdtscll(tsc_this);
-		delta = vcpu->arch.host_tsc - tsc_this;
-		vmcs_write64(TSC_OFFSET, vmcs_read64(TSC_OFFSET) + delta);
-	}
-}
-
-static void vmx_vcpu_put(struct kvm_vcpu *vcpu)
-{
-	vmx_load_host_state(to_vmx(vcpu));
-}
-
-static void vmx_fpu_activate(struct kvm_vcpu *vcpu)
-{
-	if (vcpu->fpu_active)
-		return;
-	vcpu->fpu_active = 1;
-	vmcs_clear_bits(GUEST_CR0, X86_CR0_TS);
-	if (vcpu->arch.cr0 & X86_CR0_TS)
-		vmcs_set_bits(GUEST_CR0, X86_CR0_TS);
-	update_exception_bitmap(vcpu);
-}
-
-static void vmx_fpu_deactivate(struct kvm_vcpu *vcpu)
-{
-	if (!vcpu->fpu_active)
-		return;
-	vcpu->fpu_active = 0;
-	vmcs_set_bits(GUEST_CR0, X86_CR0_TS);
-	update_exception_bitmap(vcpu);
-}
-
-static void vmx_vcpu_decache(struct kvm_vcpu *vcpu)
-{
-	vcpu_clear(to_vmx(vcpu));
-}
-
-static unsigned long vmx_get_rflags(struct kvm_vcpu *vcpu)
-{
-	return vmcs_readl(GUEST_RFLAGS);
-}
-
-static void vmx_set_rflags(struct kvm_vcpu *vcpu, unsigned long rflags)
-{
-	if (vcpu->arch.rmode.active)
-		rflags |= X86_EFLAGS_IOPL | X86_EFLAGS_VM;
-	vmcs_writel(GUEST_RFLAGS, rflags);
-}
-
-static void skip_emulated_instruction(struct kvm_vcpu *vcpu)
-{
-	unsigned long rip;
-	u32 interruptibility;
-
-	rip = vmcs_readl(GUEST_RIP);
-	rip += vmcs_read32(VM_EXIT_INSTRUCTION_LEN);
-	vmcs_writel(GUEST_RIP, 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;
-}
-
-static void vmx_queue_exception(struct kvm_vcpu *vcpu, unsigned nr,
-				bool has_error_code, u32 error_code)
-{
-	vmcs_write32(VM_ENTRY_INTR_INFO_FIELD,
-		     nr | INTR_TYPE_EXCEPTION
-		     | (has_error_code ? INTR_INFO_DELIEVER_CODE_MASK : 0)
-		     | INTR_INFO_VALID_MASK);
-	if (has_error_code)
-		vmcs_write32(VM_ENTRY_EXCEPTION_ERROR_CODE, error_code);
-}
-
-static bool vmx_exception_injected(struct kvm_vcpu *vcpu)
-{
-	struct vcpu_vmx *vmx = to_vmx(vcpu);
-
-	return !(vmx->idt_vectoring_info & VECTORING_INFO_VALID_MASK);
-}
-
-/*
- * Swap MSR entry in host/guest MSR entry array.
- */
-#ifdef CONFIG_X86_64
-static void move_msr_up(struct vcpu_vmx *vmx, int from, int to)
-{
-	struct kvm_msr_entry tmp;
-
-	tmp = vmx->guest_msrs[to];
-	vmx->guest_msrs[to] = vmx->guest_msrs[from];
-	vmx->guest_msrs[from] = tmp;
-	tmp = vmx->host_msrs[to];
-	vmx->host_msrs[to] = vmx->host_msrs[from];
-	vmx->host_msrs[from] = tmp;
-}
-#endif
-
-/*
- * Set up the vmcs to automatically save and restore system
- * msrs.  Don't touch the 64-bit msrs if the guest is in legacy
- * mode, as fiddling with msrs is very expensive.
- */
-static void setup_msrs(struct vcpu_vmx *vmx)
-{
-	int save_nmsrs;
-
-	save_nmsrs = 0;
-#ifdef CONFIG_X86_64
-	if (is_long_mode(&vmx->vcpu)) {
-		int index;
-
-		index = __find_msr_index(vmx, MSR_SYSCALL_MASK);
-		if (index >= 0)
-			move_msr_up(vmx, index, save_nmsrs++);
-		index = __find_msr_index(vmx, MSR_LSTAR);
-		if (index >= 0)
-			move_msr_up(vmx, index, save_nmsrs++);
-		index = __find_msr_index(vmx, MSR_CSTAR);
-		if (index >= 0)
-			move_msr_up(vmx, index, save_nmsrs++);
-		index = __find_msr_index(vmx, MSR_KERNEL_GS_BASE);
-		if (index >= 0)
-			move_msr_up(vmx, index, save_nmsrs++);
-		/*
-		 * MSR_K6_STAR is only needed on long mode guests, and only
-		 * if efer.sce is enabled.
-		 */
-		index = __find_msr_index(vmx, MSR_K6_STAR);
-		if ((index >= 0) && (vmx->vcpu.arch.shadow_efer & EFER_SCE))
-			move_msr_up(vmx, index, save_nmsrs++);
-	}
-#endif
-	vmx->save_nmsrs = save_nmsrs;
-
-#ifdef CONFIG_X86_64
-	vmx->msr_offset_kernel_gs_base =
-		__find_msr_index(vmx, MSR_KERNEL_GS_BASE);
-#endif
-	vmx->msr_offset_efer = __find_msr_index(vmx, MSR_EFER);
-}
-
-/*
- * reads and returns guest's timestamp counter "register"
- * guest_tsc = host_tsc + tsc_offset    -- 21.3
- */
-static u64 guest_read_tsc(void)
-{
-	u64 host_tsc, tsc_offset;
-
-	rdtscll(host_tsc);
-	tsc_offset = vmcs_read64(TSC_OFFSET);
-	return host_tsc + tsc_offset;
-}
-
-/*
- * writes 'guest_tsc' into guest's timestamp counter "register"
- * guest_tsc = host_tsc + tsc_offset ==> tsc_offset = guest_tsc - host_tsc
- */
-static void guest_write_tsc(u64 guest_tsc)
-{
-	u64 host_tsc;
-
-	rdtscll(host_tsc);
-	vmcs_write64(TSC_OFFSET, guest_tsc - host_tsc);
-}
-
-/*
- * Reads an msr value (of 'msr_index') into 'pdata'.
- * Returns 0 on success, non-0 otherwise.
- * Assumes vcpu_load() was already called.
- */
-static int vmx_get_msr(struct kvm_vcpu *vcpu, u32 msr_index, u64 *pdata)
-{
-	u64 data;
-	struct kvm_msr_entry *msr;
-
-	if (!pdata) {
-		printk(KERN_ERR "BUG: get_msr called with NULL pdata\n");
-		return -EINVAL;
-	}
-
-	switch (msr_index) {
-#ifdef CONFIG_X86_64
-	case MSR_FS_BASE:
-		data = vmcs_readl(GUEST_FS_BASE);
-		break;
-	case MSR_GS_BASE:
-		data = vmcs_readl(GUEST_GS_BASE);
-		break;
-	case MSR_EFER:
-		return kvm_get_msr_common(vcpu, msr_index, pdata);
-#endif
-	case MSR_IA32_TIME_STAMP_COUNTER:
-		data = guest_read_tsc();
-		break;
-	case MSR_IA32_SYSENTER_CS:
-		data = vmcs_read32(GUEST_SYSENTER_CS);
-		break;
-	case MSR_IA32_SYSENTER_EIP:
-		data = vmcs_readl(GUEST_SYSENTER_EIP);
-		break;
-	case MSR_IA32_SYSENTER_ESP:
-		data = vmcs_readl(GUEST_SYSENTER_ESP);
-		break;
-	default:
-		msr = find_msr_entry(to_vmx(vcpu), msr_index);
-		if (msr) {
-			data = msr->data;
-			break;
-		}
-		return kvm_get_msr_common(vcpu, msr_index, pdata);
-	}
-
-	*pdata = data;
-	return 0;
-}
-
-/*
- * Writes msr value into into the appropriate "register".
- * Returns 0 on success, non-0 otherwise.
- * Assumes vcpu_load() was already called.
- */
-static int vmx_set_msr(struct kvm_vcpu *vcpu, u32 msr_index, u64 data)
-{
-	struct vcpu_vmx *vmx = to_vmx(vcpu);
-	struct kvm_msr_entry *msr;
-	int ret = 0;
-
-	switch (msr_index) {
-#ifdef CONFIG_X86_64
-	case MSR_EFER:
-		ret = kvm_set_msr_common(vcpu, msr_index, data);
-		if (vmx->host_state.loaded) {
-			reload_host_efer(vmx);
-			load_transition_efer(vmx);
-		}
-		break;
-	case MSR_FS_BASE:
-		vmcs_writel(GUEST_FS_BASE, data);
-		break;
-	case MSR_GS_BASE:
-		vmcs_writel(GUEST_GS_BASE, data);
-		break;
-#endif
-	case MSR_IA32_SYSENTER_CS:
-		vmcs_write32(GUEST_SYSENTER_CS, data);
-		break;
-	case MSR_IA32_SYSENTER_EIP:
-		vmcs_writel(GUEST_SYSENTER_EIP, data);
-		break;
-	case MSR_IA32_SYSENTER_ESP:
-		vmcs_writel(GUEST_SYSENTER_ESP, data);
-		break;
-	case MSR_IA32_TIME_STAMP_COUNTER:
-		guest_write_tsc(data);
-		break;
-	default:
-		msr = find_msr_entry(vmx, msr_index);
-		if (msr) {
-			msr->data = data;
-			if (vmx->host_state.loaded)
-				load_msrs(vmx->guest_msrs, vmx->save_nmsrs);
-			break;
-		}
-		ret = kvm_set_msr_common(vcpu, msr_index, data);
-	}
-
-	return ret;
-}
-
-/*
- * Sync the rsp and rip registers into the vcpu structure.  This allows
- * registers to be accessed by indexing vcpu->arch.regs.
- */
-static void vcpu_load_rsp_rip(struct kvm_vcpu *vcpu)
-{
-	vcpu->arch.regs[VCPU_REGS_RSP] = vmcs_readl(GUEST_RSP);
-	vcpu->arch.rip = vmcs_readl(GUEST_RIP);
-}
-
-/*
- * Syncs rsp and rip back into the vmcs.  Should be called after possible
- * modification.
- */
-static void vcpu_put_rsp_rip(struct kvm_vcpu *vcpu)
-{
-	vmcs_writel(GUEST_RSP, vcpu->arch.regs[VCPU_REGS_RSP]);
-	vmcs_writel(GUEST_RIP, vcpu->arch.rip);
-}
-
-static int set_guest_debug(struct kvm_vcpu *vcpu, struct kvm_debug_guest *dbg)
-{
-	unsigned long dr7 = 0x400;
-	int old_singlestep;
-
-	old_singlestep = vcpu->guest_debug.singlestep;
-
-	vcpu->guest_debug.enabled = dbg->enabled;
-	if (vcpu->guest_debug.enabled) {
-		int i;
-
-		dr7 |= 0x200;  /* exact */
-		for (i = 0; i < 4; ++i) {
-			if (!dbg->breakpoints[i].enabled)
-				continue;
-			vcpu->guest_debug.bp[i] = dbg->breakpoints[i].address;
-			dr7 |= 2 << (i*2);    /* global enable */
-			dr7 |= 0 << (i*4+16); /* execution breakpoint */
-		}
-
-		vcpu->guest_debug.singlestep = dbg->singlestep;
-	} else
-		vcpu->guest_debug.singlestep = 0;
-
-	if (old_singlestep && !vcpu->guest_debug.singlestep) {
-		unsigned long flags;
-
-		flags = vmcs_readl(GUEST_RFLAGS);
-		flags &= ~(X86_EFLAGS_TF | X86_EFLAGS_RF);
-		vmcs_writel(GUEST_RFLAGS, flags);
-	}
-
-	update_exception_bitmap(vcpu);
-	vmcs_writel(GUEST_DR7, dr7);
-
-	return 0;
-}
-
-static int vmx_get_irq(struct kvm_vcpu *vcpu)
-{
-	struct vcpu_vmx *vmx = to_vmx(vcpu);
-	u32 idtv_info_field;
-
-	idtv_info_field = vmx->idt_vectoring_info;
-	if (idtv_info_field & INTR_INFO_VALID_MASK) {
-		if (is_external_interrupt(idtv_info_field))
-			return idtv_info_field & VECTORING_INFO_VECTOR_MASK;
-		else
-			printk(KERN_DEBUG "pending exception: not handled yet\n");
-	}
-	return -1;
-}
-
-static __init int cpu_has_kvm_support(void)
-{
-	unsigned long ecx = cpuid_ecx(1);
-	return test_bit(5, &ecx); /* CPUID.1:ECX.VMX[bit 5] -> VT */
-}
-
-static __init int vmx_disabled_by_bios(void)
-{
-	u64 msr;
-
-	rdmsrl(MSR_IA32_FEATURE_CONTROL, msr);
-	return (msr & (MSR_IA32_FEATURE_CONTROL_LOCKED |
-		       MSR_IA32_FEATURE_CONTROL_VMXON_ENABLED))
-	    == MSR_IA32_FEATURE_CONTROL_LOCKED;
-	/* locked but not enabled */
-}
-
-static void hardware_enable(void *garbage)
-{
-	int cpu = raw_smp_processor_id();
-	u64 phys_addr = __pa(per_cpu(vmxarea, cpu));
-	u64 old;
-
-	rdmsrl(MSR_IA32_FEATURE_CONTROL, old);
-	if ((old & (MSR_IA32_FEATURE_CONTROL_LOCKED |
-		    MSR_IA32_FEATURE_CONTROL_VMXON_ENABLED))
-	    != (MSR_IA32_FEATURE_CONTROL_LOCKED |
-		MSR_IA32_FEATURE_CONTROL_VMXON_ENABLED))
-		/* enable and lock */
-		wrmsrl(MSR_IA32_FEATURE_CONTROL, old |
-		       MSR_IA32_FEATURE_CONTROL_LOCKED |
-		       MSR_IA32_FEATURE_CONTROL_VMXON_ENABLED);
-	write_cr4(read_cr4() | X86_CR4_VMXE); /* FIXME: not cpu hotplug safe */
-	asm volatile (ASM_VMX_VMXON_RAX : : "a"(&phys_addr), "m"(phys_addr)
-		      : "memory", "cc");
-}
-
-static void hardware_disable(void *garbage)
-{
-	asm volatile (ASM_VMX_VMXOFF : : : "cc");
-}
-
-static __init int adjust_vmx_controls(u32 ctl_min, u32 ctl_opt,
-				      u32 msr, u32 *result)
-{
-	u32 vmx_msr_low, vmx_msr_high;
-	u32 ctl = ctl_min | ctl_opt;
-
-	rdmsr(msr, vmx_msr_low, vmx_msr_high);
-
-	ctl &= vmx_msr_high; /* bit == 0 in high word ==> must be zero */
-	ctl |= vmx_msr_low;  /* bit == 1 in low word  ==> must be one  */
-
-	/* Ensure minimum (required) set of control bits are supported. */
-	if (ctl_min & ~ctl)
-		return -EIO;
-
-	*result = ctl;
-	return 0;
-}
-
-static __init int setup_vmcs_config(struct vmcs_config *vmcs_conf)
-{
-	u32 vmx_msr_low, vmx_msr_high;
-	u32 min, opt;
-	u32 _pin_based_exec_control = 0;
-	u32 _cpu_based_exec_control = 0;
-	u32 _cpu_based_2nd_exec_control = 0;
-	u32 _vmexit_control = 0;
-	u32 _vmentry_control = 0;
-
-	min = PIN_BASED_EXT_INTR_MASK | PIN_BASED_NMI_EXITING;
-	opt = 0;
-	if (adjust_vmx_controls(min, opt, MSR_IA32_VMX_PINBASED_CTLS,
-				&_pin_based_exec_control) < 0)
-		return -EIO;
-
-	min = CPU_BASED_HLT_EXITING |
-#ifdef CONFIG_X86_64
-	      CPU_BASED_CR8_LOAD_EXITING |
-	      CPU_BASED_CR8_STORE_EXITING |
-#endif
-	      CPU_BASED_USE_IO_BITMAPS |
-	      CPU_BASED_MOV_DR_EXITING |
-	      CPU_BASED_USE_TSC_OFFSETING;
-	opt = CPU_BASED_TPR_SHADOW |
-	      CPU_BASED_ACTIVATE_SECONDARY_CONTROLS;
-	if (adjust_vmx_controls(min, opt, MSR_IA32_VMX_PROCBASED_CTLS,
-				&_cpu_based_exec_control) < 0)
-		return -EIO;
-#ifdef CONFIG_X86_64
-	if ((_cpu_based_exec_control & CPU_BASED_TPR_SHADOW))
-		_cpu_based_exec_control &= ~CPU_BASED_CR8_LOAD_EXITING &
-					   ~CPU_BASED_CR8_STORE_EXITING;
-#endif
-	if (_cpu_based_exec_control & CPU_BASED_ACTIVATE_SECONDARY_CONTROLS) {
-		min = 0;
-		opt = SECONDARY_EXEC_VIRTUALIZE_APIC_ACCESSES |
-			SECONDARY_EXEC_WBINVD_EXITING;
-		if (adjust_vmx_controls(min, opt, MSR_IA32_VMX_PROCBASED_CTLS2,
-					&_cpu_based_2nd_exec_control) < 0)
-			return -EIO;
-	}
-#ifndef CONFIG_X86_64
-	if (!(_cpu_based_2nd_exec_control &
-				SECONDARY_EXEC_VIRTUALIZE_APIC_ACCESSES))
-		_cpu_based_exec_control &= ~CPU_BASED_TPR_SHADOW;
-#endif
-
-	min = 0;
-#ifdef CONFIG_X86_64
-	min |= VM_EXIT_HOST_ADDR_SPACE_SIZE;
-#endif
-	opt = 0;
-	if (adjust_vmx_controls(min, opt, MSR_IA32_VMX_EXIT_CTLS,
-				&_vmexit_control) < 0)
-		return -EIO;
-
-	min = opt = 0;
-	if (adjust_vmx_controls(min, opt, MSR_IA32_VMX_ENTRY_CTLS,
-				&_vmentry_control) < 0)
-		return -EIO;
-
-	rdmsr(MSR_IA32_VMX_BASIC, vmx_msr_low, vmx_msr_high);
-
-	/* IA-32 SDM Vol 3B: VMCS size is never greater than 4kB. */
-	if ((vmx_msr_high & 0x1fff) > PAGE_SIZE)
-		return -EIO;
-
-#ifdef CONFIG_X86_64
-	/* IA-32 SDM Vol 3B: 64-bit CPUs always have VMX_BASIC_MSR[48]==0. */
-	if (vmx_msr_high & (1u<<16))
-		return -EIO;
-#endif
-
-	/* Require Write-Back (WB) memory type for VMCS accesses. */
-	if (((vmx_msr_high >> 18) & 15) != 6)
-		return -EIO;
-
-	vmcs_conf->size = vmx_msr_high & 0x1fff;
-	vmcs_conf->order = get_order(vmcs_config.size);
-	vmcs_conf->revision_id = vmx_msr_low;
-
-	vmcs_conf->pin_based_exec_ctrl = _pin_based_exec_control;
-	vmcs_conf->cpu_based_exec_ctrl = _cpu_based_exec_control;
-	vmcs_conf->cpu_based_2nd_exec_ctrl = _cpu_based_2nd_exec_control;
-	vmcs_conf->vmexit_ctrl         = _vmexit_control;
-	vmcs_conf->vmentry_ctrl        = _vmentry_control;
-
-	return 0;
-}
-
-static struct vmcs *alloc_vmcs_cpu(int cpu)
-{
-	int node = cpu_to_node(cpu);
-	struct page *pages;
-	struct vmcs *vmcs;
-
-	pages = alloc_pages_node(node, GFP_KERNEL, vmcs_config.order);
-	if (!pages)
-		return NULL;
-	vmcs = page_address(pages);
-	memset(vmcs, 0, vmcs_config.size);
-	vmcs->revision_id = vmcs_config.revision_id; /* vmcs revision id */
-	return vmcs;
-}
-
-static struct vmcs *alloc_vmcs(void)
-{
-	return alloc_vmcs_cpu(raw_smp_processor_id());
-}
-
-static void free_vmcs(struct vmcs *vmcs)
-{
-	free_pages((unsigned long)vmcs, vmcs_config.order);
-}
-
-static void free_kvm_area(void)
-{
-	int cpu;
-
-	for_each_online_cpu(cpu)
-		free_vmcs(per_cpu(vmxarea, cpu));
-}
-
-static __init int alloc_kvm_area(void)
-{
-	int cpu;
-
-	for_each_online_cpu(cpu) {
-		struct vmcs *vmcs;
-
-		vmcs = alloc_vmcs_cpu(cpu);
-		if (!vmcs) {
-			free_kvm_area();
-			return -ENOMEM;
-		}
-
-		per_cpu(vmxarea, cpu) = vmcs;
-	}
-	return 0;
-}
-
-static __init int hardware_setup(void)
-{
-	if (setup_vmcs_config(&vmcs_config) < 0)
-		return -EIO;
-	return alloc_kvm_area();
-}
-
-static __exit void hardware_unsetup(void)
-{
-	free_kvm_area();
-}
-
-static void fix_pmode_dataseg(int seg, struct kvm_save_segment *save)
-{
-	struct kvm_vmx_segment_field *sf = &kvm_vmx_segment_fields[seg];
-
-	if (vmcs_readl(sf->base) == save->base && (save->base & AR_S_MASK)) {
-		vmcs_write16(sf->selector, save->selector);
-		vmcs_writel(sf->base, save->base);
-		vmcs_write32(sf->limit, save->limit);
-		vmcs_write32(sf->ar_bytes, save->ar);
-	} else {
-		u32 dpl = (vmcs_read16(sf->selector) & SELECTOR_RPL_MASK)
-			<< AR_DPL_SHIFT;
-		vmcs_write32(sf->ar_bytes, 0x93 | dpl);
-	}
-}
-
-static void enter_pmode(struct kvm_vcpu *vcpu)
-{
-	unsigned long flags;
-
-	vcpu->arch.rmode.active = 0;
-
-	vmcs_writel(GUEST_TR_BASE, vcpu->arch.rmode.tr.base);
-	vmcs_write32(GUEST_TR_LIMIT, vcpu->arch.rmode.tr.limit);
-	vmcs_write32(GUEST_TR_AR_BYTES, vcpu->arch.rmode.tr.ar);
-
-	flags = vmcs_readl(GUEST_RFLAGS);
-	flags &= ~(X86_EFLAGS_IOPL | X86_EFLAGS_VM);
-	flags |= (vcpu->arch.rmode.save_iopl << IOPL_SHIFT);
-	vmcs_writel(GUEST_RFLAGS, flags);
-
-	vmcs_writel(GUEST_CR4, (vmcs_readl(GUEST_CR4) & ~X86_CR4_VME) |
-			(vmcs_readl(CR4_READ_SHADOW) & X86_CR4_VME));
-
-	update_exception_bitmap(vcpu);
-
-	fix_pmode_dataseg(VCPU_SREG_ES, &vcpu->arch.rmode.es);
-	fix_pmode_dataseg(VCPU_SREG_DS, &vcpu->arch.rmode.ds);
-	fix_pmode_dataseg(VCPU_SREG_GS, &vcpu->arch.rmode.gs);
-	fix_pmode_dataseg(VCPU_SREG_FS, &vcpu->arch.rmode.fs);
-
-	vmcs_write16(GUEST_SS_SELECTOR, 0);
-	vmcs_write32(GUEST_SS_AR_BYTES, 0x93);
-
-	vmcs_write16(GUEST_CS_SELECTOR,
-		     vmcs_read16(GUEST_CS_SELECTOR) & ~SELECTOR_RPL_MASK);
-	vmcs_write32(GUEST_CS_AR_BYTES, 0x9b);
-}
-
-static gva_t rmode_tss_base(struct kvm *kvm)
-{
-	if (!kvm->arch.tss_addr) {
-		gfn_t base_gfn = kvm->memslots[0].base_gfn +
-				 kvm->memslots[0].npages - 3;
-		return base_gfn << PAGE_SHIFT;
-	}
-	return kvm->arch.tss_addr;
-}
-
-static void fix_rmode_seg(int seg, struct kvm_save_segment *save)
-{
-	struct kvm_vmx_segment_field *sf = &kvm_vmx_segment_fields[seg];
-
-	save->selector = vmcs_read16(sf->selector);
-	save->base = vmcs_readl(sf->base);
-	save->limit = vmcs_read32(sf->limit);
-	save->ar = vmcs_read32(sf->ar_bytes);
-	vmcs_write16(sf->selector, save->base >> 4);
-	vmcs_write32(sf->base, save->base & 0xfffff);
-	vmcs_write32(sf->limit, 0xffff);
-	vmcs_write32(sf->ar_bytes, 0xf3);
-}
-
-static void enter_rmode(struct kvm_vcpu *vcpu)
-{
-	unsigned long flags;
-
-	vcpu->arch.rmode.active = 1;
-
-	vcpu->arch.rmode.tr.base = vmcs_readl(GUEST_TR_BASE);
-	vmcs_writel(GUEST_TR_BASE, rmode_tss_base(vcpu->kvm));
-
-	vcpu->arch.rmode.tr.limit = vmcs_read32(GUEST_TR_LIMIT);
-	vmcs_write32(GUEST_TR_LIMIT, RMODE_TSS_SIZE - 1);
-
-	vcpu->arch.rmode.tr.ar = vmcs_read32(GUEST_TR_AR_BYTES);
-	vmcs_write32(GUEST_TR_AR_BYTES, 0x008b);
-
-	flags = vmcs_readl(GUEST_RFLAGS);
-	vcpu->arch.rmode.save_iopl
-		= (flags & X86_EFLAGS_IOPL) >> IOPL_SHIFT;
-
-	flags |= X86_EFLAGS_IOPL | X86_EFLAGS_VM;
-
-	vmcs_writel(GUEST_RFLAGS, flags);
-	vmcs_writel(GUEST_CR4, vmcs_readl(GUEST_CR4) | X86_CR4_VME);
-	update_exception_bitmap(vcpu);
-
-	vmcs_write16(GUEST_SS_SELECTOR, vmcs_readl(GUEST_SS_BASE) >> 4);
-	vmcs_write32(GUEST_SS_LIMIT, 0xffff);
-	vmcs_write32(GUEST_SS_AR_BYTES, 0xf3);
-
-	vmcs_write32(GUEST_CS_AR_BYTES, 0xf3);
-	vmcs_write32(GUEST_CS_LIMIT, 0xffff);
-	if (vmcs_readl(GUEST_CS_BASE) == 0xffff0000)
-		vmcs_writel(GUEST_CS_BASE, 0xf0000);
-	vmcs_write16(GUEST_CS_SELECTOR, vmcs_readl(GUEST_CS_BASE) >> 4);
-
-	fix_rmode_seg(VCPU_SREG_ES, &vcpu->arch.rmode.es);
-	fix_rmode_seg(VCPU_SREG_DS, &vcpu->arch.rmode.ds);
-	fix_rmode_seg(VCPU_SREG_GS, &vcpu->arch.rmode.gs);
-	fix_rmode_seg(VCPU_SREG_FS, &vcpu->arch.rmode.fs);
-
-	kvm_mmu_reset_context(vcpu);
-	init_rmode_tss(vcpu->kvm);
-}
-
-#ifdef CONFIG_X86_64
-
-static void enter_lmode(struct kvm_vcpu *vcpu)
-{
-	u32 guest_tr_ar;
-
-	guest_tr_ar = vmcs_read32(GUEST_TR_AR_BYTES);
-	if ((guest_tr_ar & AR_TYPE_MASK) != AR_TYPE_BUSY_64_TSS) {
-		printk(KERN_DEBUG "%s: tss fixup for long mode. \n",
-		       __FUNCTION__);
-		vmcs_write32(GUEST_TR_AR_BYTES,
-			     (guest_tr_ar & ~AR_TYPE_MASK)
-			     | AR_TYPE_BUSY_64_TSS);
-	}
-
-	vcpu->arch.shadow_efer |= EFER_LMA;
-
-	find_msr_entry(to_vmx(vcpu), MSR_EFER)->data |= EFER_LMA | EFER_LME;
-	vmcs_write32(VM_ENTRY_CONTROLS,
-		     vmcs_read32(VM_ENTRY_CONTROLS)
-		     | VM_ENTRY_IA32E_MODE);
-}
-
-static void exit_lmode(struct kvm_vcpu *vcpu)
-{
-	vcpu->arch.shadow_efer &= ~EFER_LMA;
-
-	vmcs_write32(VM_ENTRY_CONTROLS,
-		     vmcs_read32(VM_ENTRY_CONTROLS)
-		     & ~VM_ENTRY_IA32E_MODE);
-}
-
-#endif
-
-static void vmx_decache_cr4_guest_bits(struct kvm_vcpu *vcpu)
-{
-	vcpu->arch.cr4 &= KVM_GUEST_CR4_MASK;
-	vcpu->arch.cr4 |= vmcs_readl(GUEST_CR4) & ~KVM_GUEST_CR4_MASK;
-}
-
-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))
-		enter_pmode(vcpu);
-
-	if (!vcpu->arch.rmode.active && !(cr0 & X86_CR0_PE))
-		enter_rmode(vcpu);
-
-#ifdef CONFIG_X86_64
-	if (vcpu->arch.shadow_efer & EFER_LME) {
-		if (!is_paging(vcpu) && (cr0 & X86_CR0_PG))
-			enter_lmode(vcpu);
-		if (is_paging(vcpu) && !(cr0 & X86_CR0_PG))
-			exit_lmode(vcpu);
-	}
-#endif
-
-	vmcs_writel(CR0_READ_SHADOW, cr0);
-	vmcs_writel(GUEST_CR0,
-		    (cr0 & ~KVM_GUEST_CR0_MASK) | KVM_VM_CR0_ALWAYS_ON);
-	vcpu->arch.cr0 = cr0;
-
-	if (!(cr0 & X86_CR0_TS) || !(cr0 & X86_CR0_PE))
-		vmx_fpu_activate(vcpu);
-}
-
-static void vmx_set_cr3(struct kvm_vcpu *vcpu, unsigned long cr3)
-{
-	vmcs_writel(GUEST_CR3, cr3);
-	if (vcpu->arch.cr0 & X86_CR0_PE)
-		vmx_fpu_deactivate(vcpu);
-}
-
-static void vmx_set_cr4(struct kvm_vcpu *vcpu, unsigned long cr4)
-{
-	vmcs_writel(CR4_READ_SHADOW, cr4);
-	vmcs_writel(GUEST_CR4, cr4 | (vcpu->arch.rmode.active ?
-		    KVM_RMODE_VM_CR4_ALWAYS_ON : KVM_PMODE_VM_CR4_ALWAYS_ON));
-	vcpu->arch.cr4 = cr4;
-}
-
-#ifdef CONFIG_X86_64
-
-static void vmx_set_efer(struct kvm_vcpu *vcpu, u64 efer)
-{
-	struct vcpu_vmx *vmx = to_vmx(vcpu);
-	struct kvm_msr_entry *msr = find_msr_entry(vmx, MSR_EFER);
-
-	vcpu->arch.shadow_efer = efer;
-	if (efer & EFER_LMA) {
-		vmcs_write32(VM_ENTRY_CONTROLS,
-				     vmcs_read32(VM_ENTRY_CONTROLS) |
-				     VM_ENTRY_IA32E_MODE);
-		msr->data = efer;
-
-	} else {
-		vmcs_write32(VM_ENTRY_CONTROLS,
-				     vmcs_read32(VM_ENTRY_CONTROLS) &
-				     ~VM_ENTRY_IA32E_MODE);
-
-		msr->data = efer & ~EFER_LME;
-	}
-	setup_msrs(vmx);
-}
-
-#endif
-
-static u64 vmx_get_segment_base(struct kvm_vcpu *vcpu, int seg)
-{
-	struct kvm_vmx_segment_field *sf = &kvm_vmx_segment_fields[seg];
-
-	return vmcs_readl(sf->base);
-}
-
-static void vmx_get_segment(struct kvm_vcpu *vcpu,
-			    struct kvm_segment *var, int seg)
-{
-	struct kvm_vmx_segment_field *sf = &kvm_vmx_segment_fields[seg];
-	u32 ar;
-
-	var->base = vmcs_readl(sf->base);
-	var->limit = vmcs_read32(sf->limit);
-	var->selector = vmcs_read16(sf->selector);
-	ar = vmcs_read32(sf->ar_bytes);
-	if (ar & AR_UNUSABLE_MASK)
-		ar = 0;
-	var->type = ar & 15;
-	var->s = (ar >> 4) & 1;
-	var->dpl = (ar >> 5) & 3;
-	var->present = (ar >> 7) & 1;
-	var->avl = (ar >> 12) & 1;
-	var->l = (ar >> 13) & 1;
-	var->db = (ar >> 14) & 1;
-	var->g = (ar >> 15) & 1;
-	var->unusable = (ar >> 16) & 1;
-}
-
-static u32 vmx_segment_access_rights(struct kvm_segment *var)
-{
-	u32 ar;
-
-	if (var->unusable)
-		ar = 1 << 16;
-	else {
-		ar = var->type & 15;
-		ar |= (var->s & 1) << 4;
-		ar |= (var->dpl & 3) << 5;
-		ar |= (var->present & 1) << 7;
-		ar |= (var->avl & 1) << 12;
-		ar |= (var->l & 1) << 13;
-		ar |= (var->db & 1) << 14;
-		ar |= (var->g & 1) << 15;
-	}
-	if (ar == 0) /* a 0 value means unusable */
-		ar = AR_UNUSABLE_MASK;
-
-	return ar;
-}
-
-static void vmx_set_segment(struct kvm_vcpu *vcpu,
-			    struct kvm_segment *var, int seg)
-{
-	struct kvm_vmx_segment_field *sf = &kvm_vmx_segment_fields[seg];
-	u32 ar;
-
-	if (vcpu->arch.rmode.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;
-		vcpu->arch.rmode.tr.ar = vmx_segment_access_rights(var);
-		return;
-	}
-	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) {
-		/*
-		 * Hack real-mode segments into vm86 compatibility.
-		 */
-		if (var->base == 0xffff0000 && var->selector == 0xf000)
-			vmcs_writel(sf->base, 0xf0000);
-		ar = 0xf3;
-	} else
-		ar = vmx_segment_access_rights(var);
-	vmcs_write32(sf->ar_bytes, ar);
-}
-
-static void vmx_get_cs_db_l_bits(struct kvm_vcpu *vcpu, int *db, int *l)
-{
-	u32 ar = vmcs_read32(GUEST_CS_AR_BYTES);
-
-	*db = (ar >> 14) & 1;
-	*l = (ar >> 13) & 1;
-}
-
-static void vmx_get_idt(struct kvm_vcpu *vcpu, struct descriptor_table *dt)
-{
-	dt->limit = vmcs_read32(GUEST_IDTR_LIMIT);
-	dt->base = vmcs_readl(GUEST_IDTR_BASE);
-}
-
-static void vmx_set_idt(struct kvm_vcpu *vcpu, struct descriptor_table *dt)
-{
-	vmcs_write32(GUEST_IDTR_LIMIT, dt->limit);
-	vmcs_writel(GUEST_IDTR_BASE, dt->base);
-}
-
-static void vmx_get_gdt(struct kvm_vcpu *vcpu, struct descriptor_table *dt)
-{
-	dt->limit = vmcs_read32(GUEST_GDTR_LIMIT);
-	dt->base = vmcs_readl(GUEST_GDTR_BASE);
-}
-
-static void vmx_set_gdt(struct kvm_vcpu *vcpu, struct descriptor_table *dt)
-{
-	vmcs_write32(GUEST_GDTR_LIMIT, dt->limit);
-	vmcs_writel(GUEST_GDTR_BASE, dt->base);
-}
-
-static int init_rmode_tss(struct kvm *kvm)
-{
-	gfn_t fn = rmode_tss_base(kvm) >> PAGE_SHIFT;
-	u16 data = 0;
-	int r;
-
-	r = kvm_clear_guest_page(kvm, fn, 0, PAGE_SIZE);
-	if (r < 0)
-		return 0;
-	data = TSS_BASE_SIZE + TSS_REDIRECTION_SIZE;
-	r = kvm_write_guest_page(kvm, fn++, &data, 0x66, sizeof(u16));
-	if (r < 0)
-		return 0;
-	r = kvm_clear_guest_page(kvm, fn++, 0, PAGE_SIZE);
-	if (r < 0)
-		return 0;
-	r = kvm_clear_guest_page(kvm, fn, 0, PAGE_SIZE);
-	if (r < 0)
-		return 0;
-	data = ~0;
-	r = kvm_write_guest_page(kvm, fn, &data, RMODE_TSS_SIZE - 2 * PAGE_SIZE - 1,
-			sizeof(u8));
-	if (r < 0)
-		return 0;
-	return 1;
-}
-
-static void seg_setup(int seg)
-{
-	struct kvm_vmx_segment_field *sf = &kvm_vmx_segment_fields[seg];
-
-	vmcs_write16(sf->selector, 0);
-	vmcs_writel(sf->base, 0);
-	vmcs_write32(sf->limit, 0xffff);
-	vmcs_write32(sf->ar_bytes, 0x93);
-}
-
-static int alloc_apic_access_page(struct kvm *kvm)
-{
-	struct kvm_userspace_memory_region kvm_userspace_mem;
-	int r = 0;
-
-	mutex_lock(&kvm->lock);
-	if (kvm->arch.apic_access_page)
-		goto out;
-	kvm_userspace_mem.slot = APIC_ACCESS_PAGE_PRIVATE_MEMSLOT;
-	kvm_userspace_mem.flags = 0;
-	kvm_userspace_mem.guest_phys_addr = 0xfee00000ULL;
-	kvm_userspace_mem.memory_size = PAGE_SIZE;
-	r = __kvm_set_memory_region(kvm, &kvm_userspace_mem, 0);
-	if (r)
-		goto out;
-	kvm->arch.apic_access_page = gfn_to_page(kvm, 0xfee00);
-out:
-	mutex_unlock(&kvm->lock);
-	return r;
-}
-
-/*
- * Sets up the vmcs for emulated real mode.
- */
-static int vmx_vcpu_setup(struct vcpu_vmx *vmx)
-{
-	u32 host_sysenter_cs;
-	u32 junk;
-	unsigned long a;
-	struct descriptor_table dt;
-	int i;
-	unsigned long kvm_vmx_return;
-	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(VMCS_LINK_POINTER, -1ull); /* 22.3.1.5 */
-
-	/* Control */
-	vmcs_write32(PIN_BASED_VM_EXEC_CONTROL,
-		vmcs_config.pin_based_exec_ctrl);
-
-	exec_control = vmcs_config.cpu_based_exec_ctrl;
-	if (!vm_need_tpr_shadow(vmx->vcpu.kvm)) {
-		exec_control &= ~CPU_BASED_TPR_SHADOW;
-#ifdef CONFIG_X86_64
-		exec_control |= CPU_BASED_CR8_STORE_EXITING |
-				CPU_BASED_CR8_LOAD_EXITING;
-#endif
-	}
-	vmcs_write32(CPU_BASED_VM_EXEC_CONTROL, exec_control);
-
-	if (cpu_has_secondary_exec_ctrls()) {
-		exec_control = vmcs_config.cpu_based_2nd_exec_ctrl;
-		if (!vm_need_virtualize_apic_accesses(vmx->vcpu.kvm))
-			exec_control &=
-				~SECONDARY_EXEC_VIRTUALIZE_APIC_ACCESSES;
-		vmcs_write32(SECONDARY_VM_EXEC_CONTROL, exec_control);
-	}
-
-	vmcs_write32(PAGE_FAULT_ERROR_CODE_MASK, !!bypass_guest_pf);
-	vmcs_write32(PAGE_FAULT_ERROR_CODE_MATCH, !!bypass_guest_pf);
-	vmcs_write32(CR3_TARGET_COUNT, 0);           /* 22.2.1 */
-
-	vmcs_writel(HOST_CR0, read_cr0());  /* 22.2.3 */
-	vmcs_writel(HOST_CR4, read_cr4());  /* 22.2.3, 22.2.5 */
-	vmcs_writel(HOST_CR3, read_cr3());  /* 22.2.3  FIXME: shadow tables */
-
-	vmcs_write16(HOST_CS_SELECTOR, __KERNEL_CS);  /* 22.2.4 */
-	vmcs_write16(HOST_DS_SELECTOR, __KERNEL_DS);  /* 22.2.4 */
-	vmcs_write16(HOST_ES_SELECTOR, __KERNEL_DS);  /* 22.2.4 */
-	vmcs_write16(HOST_FS_SELECTOR, read_fs());    /* 22.2.4 */
-	vmcs_write16(HOST_GS_SELECTOR, read_gs());    /* 22.2.4 */
-	vmcs_write16(HOST_SS_SELECTOR, __KERNEL_DS);  /* 22.2.4 */
-#ifdef CONFIG_X86_64
-	rdmsrl(MSR_FS_BASE, a);
-	vmcs_writel(HOST_FS_BASE, a); /* 22.2.4 */
-	rdmsrl(MSR_GS_BASE, a);
-	vmcs_writel(HOST_GS_BASE, a); /* 22.2.4 */
-#else
-	vmcs_writel(HOST_FS_BASE, 0); /* 22.2.4 */
-	vmcs_writel(HOST_GS_BASE, 0); /* 22.2.4 */
-#endif
-
-	vmcs_write16(HOST_TR_SELECTOR, GDT_ENTRY_TSS*8);  /* 22.2.4 */
-
-	get_idt(&dt);
-	vmcs_writel(HOST_IDTR_BASE, dt.base);   /* 22.2.4 */
-
-	asm("mov $.Lkvm_vmx_return, %0" : "=r"(kvm_vmx_return));
-	vmcs_writel(HOST_RIP, kvm_vmx_return); /* 22.2.5 */
-	vmcs_write32(VM_EXIT_MSR_STORE_COUNT, 0);
-	vmcs_write32(VM_EXIT_MSR_LOAD_COUNT, 0);
-	vmcs_write32(VM_ENTRY_MSR_LOAD_COUNT, 0);
-
-	rdmsr(MSR_IA32_SYSENTER_CS, host_sysenter_cs, junk);
-	vmcs_write32(HOST_IA32_SYSENTER_CS, host_sysenter_cs);
-	rdmsrl(MSR_IA32_SYSENTER_ESP, a);
-	vmcs_writel(HOST_IA32_SYSENTER_ESP, a);   /* 22.2.3 */
-	rdmsrl(MSR_IA32_SYSENTER_EIP, a);
-	vmcs_writel(HOST_IA32_SYSENTER_EIP, a);   /* 22.2.3 */
-
-	for (i = 0; i < NR_VMX_MSR; ++i) {
-		u32 index = vmx_msr_index[i];
-		u32 data_low, data_high;
-		u64 data;
-		int j = vmx->nmsrs;
-
-		if (rdmsr_safe(index, &data_low, &data_high) < 0)
-			continue;
-		if (wrmsr_safe(index, data_low, data_high) < 0)
-			continue;
-		data = data_low | ((u64)data_high << 32);
-		vmx->host_msrs[j].index = index;
-		vmx->host_msrs[j].reserved = 0;
-		vmx->host_msrs[j].data = data;
-		vmx->guest_msrs[j] = vmx->host_msrs[j];
-		++vmx->nmsrs;
-	}
-
-	vmcs_write32(VM_EXIT_CONTROLS, vmcs_config.vmexit_ctrl);
-
-	/* 22.2.1, 20.8.1 */
-	vmcs_write32(VM_ENTRY_CONTROLS, vmcs_config.vmentry_ctrl);
-
-	vmcs_writel(CR0_GUEST_HOST_MASK, ~0UL);
-	vmcs_writel(CR4_GUEST_HOST_MASK, KVM_GUEST_CR4_MASK);
-
-	if (vm_need_virtualize_apic_accesses(vmx->vcpu.kvm))
-		if (alloc_apic_access_page(vmx->vcpu.kvm) != 0)
-			return -ENOMEM;
-
-	return 0;
-}
-
-static int vmx_vcpu_reset(struct kvm_vcpu *vcpu)
-{
-	struct vcpu_vmx *vmx = to_vmx(vcpu);
-	u64 msr;
-	int ret;
-
-	if (!init_rmode_tss(vmx->vcpu.kvm)) {
-		ret = -ENOMEM;
-		goto out;
-	}
-
-	vmx->vcpu.arch.rmode.active = 0;
-
-	vmx->vcpu.arch.regs[VCPU_REGS_RDX] = get_rdx_init_val();
-	set_cr8(&vmx->vcpu, 0);
-	msr = 0xfee00000 | MSR_IA32_APICBASE_ENABLE;
-	if (vmx->vcpu.vcpu_id == 0)
-		msr |= MSR_IA32_APICBASE_BSP;
-	kvm_set_apic_base(&vmx->vcpu, msr);
-
-	fx_init(&vmx->vcpu);
-
-	/*
-	 * GUEST_CS_BASE should really be 0xffff0000, but VT vm86 mode
-	 * insists on having GUEST_CS_BASE == GUEST_CS_SELECTOR << 4.  Sigh.
-	 */
-	if (vmx->vcpu.vcpu_id == 0) {
-		vmcs_write16(GUEST_CS_SELECTOR, 0xf000);
-		vmcs_writel(GUEST_CS_BASE, 0x000f0000);
-	} else {
-		vmcs_write16(GUEST_CS_SELECTOR, vmx->vcpu.arch.sipi_vector << 8);
-		vmcs_writel(GUEST_CS_BASE, vmx->vcpu.arch.sipi_vector << 12);
-	}
-	vmcs_write32(GUEST_CS_LIMIT, 0xffff);
-	vmcs_write32(GUEST_CS_AR_BYTES, 0x9b);
-
-	seg_setup(VCPU_SREG_DS);
-	seg_setup(VCPU_SREG_ES);
-	seg_setup(VCPU_SREG_FS);
-	seg_setup(VCPU_SREG_GS);
-	seg_setup(VCPU_SREG_SS);
-
-	vmcs_write16(GUEST_TR_SELECTOR, 0);
-	vmcs_writel(GUEST_TR_BASE, 0);
-	vmcs_write32(GUEST_TR_LIMIT, 0xffff);
-	vmcs_write32(GUEST_TR_AR_BYTES, 0x008b);
-
-	vmcs_write16(GUEST_LDTR_SELECTOR, 0);
-	vmcs_writel(GUEST_LDTR_BASE, 0);
-	vmcs_write32(GUEST_LDTR_LIMIT, 0xffff);
-	vmcs_write32(GUEST_LDTR_AR_BYTES, 0x00082);
-
-	vmcs_write32(GUEST_SYSENTER_CS, 0);
-	vmcs_writel(GUEST_SYSENTER_ESP, 0);
-	vmcs_writel(GUEST_SYSENTER_EIP, 0);
-
-	vmcs_writel(GUEST_RFLAGS, 0x02);
-	if (vmx->vcpu.vcpu_id == 0)
-		vmcs_writel(GUEST_RIP, 0xfff0);
-	else
-		vmcs_writel(GUEST_RIP, 0);
-	vmcs_writel(GUEST_RSP, 0);
-
-	/* todo: dr0 = dr1 = dr2 = dr3 = 0; dr6 = 0xffff0ff0 */
-	vmcs_writel(GUEST_DR7, 0x400);
-
-	vmcs_writel(GUEST_GDTR_BASE, 0);
-	vmcs_write32(GUEST_GDTR_LIMIT, 0xffff);
-
-	vmcs_writel(GUEST_IDTR_BASE, 0);
-	vmcs_write32(GUEST_IDTR_LIMIT, 0xffff);
-
-	vmcs_write32(GUEST_ACTIVITY_STATE, 0);
-	vmcs_write32(GUEST_INTERRUPTIBILITY_INFO, 0);
-	vmcs_write32(GUEST_PENDING_DBG_EXCEPTIONS, 0);
-
-	guest_write_tsc(0);
-
-	/* Special registers */
-	vmcs_write64(GUEST_IA32_DEBUGCTL, 0);
-
-	setup_msrs(vmx);
-
-	vmcs_write32(VM_ENTRY_INTR_INFO_FIELD, 0);  /* 22.2.1 */
-
-	if (cpu_has_vmx_tpr_shadow()) {
-		vmcs_write64(VIRTUAL_APIC_PAGE_ADDR, 0);
-		if (vm_need_tpr_shadow(vmx->vcpu.kvm))
-			vmcs_write64(VIRTUAL_APIC_PAGE_ADDR,
-				page_to_phys(vmx->vcpu.arch.apic->regs_page));
-		vmcs_write32(TPR_THRESHOLD, 0);
-	}
-
-	if (vm_need_virtualize_apic_accesses(vmx->vcpu.kvm))
-		vmcs_write64(APIC_ACCESS_ADDR,
-			     page_to_phys(vmx->vcpu.kvm->arch.apic_access_page));
-
-	vmx->vcpu.arch.cr0 = 0x60000010;
-	vmx_set_cr0(&vmx->vcpu, vmx->vcpu.arch.cr0); /* enter rmode */
-	vmx_set_cr4(&vmx->vcpu, 0);
-#ifdef CONFIG_X86_64
-	vmx_set_efer(&vmx->vcpu, 0);
-#endif
-	vmx_fpu_activate(&vmx->vcpu);
-	update_exception_bitmap(&vmx->vcpu);
-
-	return 0;
-
-out:
-	return ret;
-}
-
-static void vmx_inject_irq(struct kvm_vcpu *vcpu, int irq)
-{
-	struct vcpu_vmx *vmx = to_vmx(vcpu);
-
-	if (vcpu->arch.rmode.active) {
-		vmx->rmode.irq.pending = true;
-		vmx->rmode.irq.vector = irq;
-		vmx->rmode.irq.rip = vmcs_readl(GUEST_RIP);
-		vmcs_write32(VM_ENTRY_INTR_INFO_FIELD,
-			     irq | INTR_TYPE_SOFT_INTR | INTR_INFO_VALID_MASK);
-		vmcs_write32(VM_ENTRY_INSTRUCTION_LEN, 1);
-		vmcs_writel(GUEST_RIP, vmx->rmode.irq.rip - 1);
-		return;
-	}
-	vmcs_write32(VM_ENTRY_INTR_INFO_FIELD,
-			irq | INTR_TYPE_EXT_INTR | INTR_INFO_VALID_MASK);
-}
-
-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;
-
-	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);
-	vmx_inject_irq(vcpu, irq);
-}
-
-
-static void do_interrupt_requests(struct kvm_vcpu *vcpu,
-				       struct kvm_run *kvm_run)
-{
-	u32 cpu_based_vm_exec_control;
-
-	vcpu->arch.interrupt_window_open =
-		((vmcs_readl(GUEST_RFLAGS) & X86_EFLAGS_IF) &&
-		 (vmcs_read32(GUEST_INTERRUPTIBILITY_INFO) & 3) == 0);
-
-	if (vcpu->arch.interrupt_window_open &&
-	    vcpu->arch.irq_summary &&
-	    !(vmcs_read32(VM_ENTRY_INTR_INFO_FIELD) & INTR_INFO_VALID_MASK))
-		/*
-		 * If interrupts enabled, and not blocked by sti or mov ss. Good.
-		 */
-		kvm_do_inject_irq(vcpu);
-
-	cpu_based_vm_exec_control = vmcs_read32(CPU_BASED_VM_EXEC_CONTROL);
-	if (!vcpu->arch.interrupt_window_open &&
-	    (vcpu->arch.irq_summary || kvm_run->request_interrupt_window))
-		/*
-		 * Interrupts blocked.  Wait for unblock.
-		 */
-		cpu_based_vm_exec_control |= CPU_BASED_VIRTUAL_INTR_PENDING;
-	else
-		cpu_based_vm_exec_control &= ~CPU_BASED_VIRTUAL_INTR_PENDING;
-	vmcs_write32(CPU_BASED_VM_EXEC_CONTROL, cpu_based_vm_exec_control);
-}
-
-static int vmx_set_tss_addr(struct kvm *kvm, unsigned int addr)
-{
-	int ret;
-	struct kvm_userspace_memory_region tss_mem = {
-		.slot = 8,
-		.guest_phys_addr = addr,
-		.memory_size = PAGE_SIZE * 3,
-		.flags = 0,
-	};
-
-	ret = kvm_set_memory_region(kvm, &tss_mem, 0);
-	if (ret)
-		return ret;
-	kvm->arch.tss_addr = addr;
-	return 0;
-}
-
-static void kvm_guest_debug_pre(struct kvm_vcpu *vcpu)
-{
-	struct kvm_guest_debug *dbg = &vcpu->guest_debug;
-
-	set_debugreg(dbg->bp[0], 0);
-	set_debugreg(dbg->bp[1], 1);
-	set_debugreg(dbg->bp[2], 2);
-	set_debugreg(dbg->bp[3], 3);
-
-	if (dbg->singlestep) {
-		unsigned long flags;
-
-		flags = vmcs_readl(GUEST_RFLAGS);
-		flags |= X86_EFLAGS_TF | X86_EFLAGS_RF;
-		vmcs_writel(GUEST_RFLAGS, flags);
-	}
-}
-
-static int handle_rmode_exception(struct kvm_vcpu *vcpu,
-				  int vec, u32 err_code)
-{
-	if (!vcpu->arch.rmode.active)
-		return 0;
-
-	/*
-	 * Instruction with address size override prefix opcode 0x67
-	 * Cause the #SS fault with 0 error code in VM86 mode.
-	 */
-	if (((vec == GP_VECTOR) || (vec == SS_VECTOR)) && err_code == 0)
-		if (emulate_instruction(vcpu, NULL, 0, 0, 0) == EMULATE_DONE)
-			return 1;
-	return 0;
-}
-
-static int handle_exception(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run)
-{
-	struct vcpu_vmx *vmx = to_vmx(vcpu);
-	u32 intr_info, error_code;
-	unsigned long cr2, rip;
-	u32 vect_info;
-	enum emulation_result er;
-
-	vect_info = vmx->idt_vectoring_info;
-	intr_info = vmcs_read32(VM_EXIT_INTR_INFO);
-
-	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", __FUNCTION__, 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) == 0x200) /* nmi */
-		return 1;  /* already handled by vmx_vcpu_run() */
-
-	if (is_no_device(intr_info)) {
-		vmx_fpu_activate(vcpu);
-		return 1;
-	}
-
-	if (is_invalid_opcode(intr_info)) {
-		er = emulate_instruction(vcpu, kvm_run, 0, 0, 0);
-		if (er != EMULATE_DONE)
-			kvm_queue_exception(vcpu, UD_VECTOR);
-		return 1;
-	}
-
-	error_code = 0;
-	rip = vmcs_readl(GUEST_RIP);
-	if (intr_info & INTR_INFO_DELIEVER_CODE_MASK)
-		error_code = vmcs_read32(VM_EXIT_INTR_ERROR_CODE);
-	if (is_page_fault(intr_info)) {
-		cr2 = vmcs_readl(EXIT_QUALIFICATION);
-		return kvm_mmu_page_fault(vcpu, cr2, error_code);
-	}
-
-	if (vcpu->arch.rmode.active &&
-	    handle_rmode_exception(vcpu, intr_info & INTR_INFO_VECTOR_MASK,
-								error_code)) {
-		if (vcpu->arch.halt_request) {
-			vcpu->arch.halt_request = 0;
-			return kvm_emulate_halt(vcpu);
-		}
-		return 1;
-	}
-
-	if ((intr_info & (INTR_INFO_INTR_TYPE_MASK | INTR_INFO_VECTOR_MASK)) ==
-	    (INTR_TYPE_EXCEPTION | 1)) {
-		kvm_run->exit_reason = KVM_EXIT_DEBUG;
-		return 0;
-	}
-	kvm_run->exit_reason = KVM_EXIT_EXCEPTION;
-	kvm_run->ex.exception = intr_info & INTR_INFO_VECTOR_MASK;
-	kvm_run->ex.error_code = error_code;
-	return 0;
-}
-
-static int handle_external_interrupt(struct kvm_vcpu *vcpu,
-				     struct kvm_run *kvm_run)
-{
-	++vcpu->stat.irq_exits;
-	return 1;
-}
-
-static int handle_triple_fault(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run)
-{
-	kvm_run->exit_reason = KVM_EXIT_SHUTDOWN;
-	return 0;
-}
-
-static int handle_io(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run)
-{
-	unsigned long exit_qualification;
-	int size, down, in, string, rep;
-	unsigned port;
-
-	++vcpu->stat.io_exits;
-	exit_qualification = vmcs_readl(EXIT_QUALIFICATION);
-	string = (exit_qualification & 16) != 0;
-
-	if (string) {
-		if (emulate_instruction(vcpu,
-					kvm_run, 0, 0, 0) == EMULATE_DO_MMIO)
-			return 0;
-		return 1;
-	}
-
-	size = (exit_qualification & 7) + 1;
-	in = (exit_qualification & 8) != 0;
-	down = (vmcs_readl(GUEST_RFLAGS) & X86_EFLAGS_DF) != 0;
-	rep = (exit_qualification & 32) != 0;
-	port = exit_qualification >> 16;
-
-	return kvm_emulate_pio(vcpu, kvm_run, in, size, port);
-}
-
-static void
-vmx_patch_hypercall(struct kvm_vcpu *vcpu, unsigned char *hypercall)
-{
-	/*
-	 * Patch in the VMCALL instruction:
-	 */
-	hypercall[0] = 0x0f;
-	hypercall[1] = 0x01;
-	hypercall[2] = 0xc1;
-}
-
-static int handle_cr(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run)
-{
-	unsigned long exit_qualification;
-	int cr;
-	int reg;
-
-	exit_qualification = vmcs_readl(EXIT_QUALIFICATION);
-	cr = exit_qualification & 15;
-	reg = (exit_qualification >> 8) & 15;
-	switch ((exit_qualification >> 4) & 3) {
-	case 0: /* mov to cr */
-		switch (cr) {
-		case 0:
-			vcpu_load_rsp_rip(vcpu);
-			set_cr0(vcpu, vcpu->arch.regs[reg]);
-			skip_emulated_instruction(vcpu);
-			return 1;
-		case 3:
-			vcpu_load_rsp_rip(vcpu);
-			set_cr3(vcpu, vcpu->arch.regs[reg]);
-			skip_emulated_instruction(vcpu);
-			return 1;
-		case 4:
-			vcpu_load_rsp_rip(vcpu);
-			set_cr4(vcpu, vcpu->arch.regs[reg]);
-			skip_emulated_instruction(vcpu);
-			return 1;
-		case 8:
-			vcpu_load_rsp_rip(vcpu);
-			set_cr8(vcpu, vcpu->arch.regs[reg]);
-			skip_emulated_instruction(vcpu);
-			if (irqchip_in_kernel(vcpu->kvm))
-				return 1;
-			kvm_run->exit_reason = KVM_EXIT_SET_TPR;
-			return 0;
-		};
-		break;
-	case 2: /* clts */
-		vcpu_load_rsp_rip(vcpu);
-		vmx_fpu_deactivate(vcpu);
-		vcpu->arch.cr0 &= ~X86_CR0_TS;
-		vmcs_writel(CR0_READ_SHADOW, vcpu->arch.cr0);
-		vmx_fpu_activate(vcpu);
-		skip_emulated_instruction(vcpu);
-		return 1;
-	case 1: /*mov from cr*/
-		switch (cr) {
-		case 3:
-			vcpu_load_rsp_rip(vcpu);
-			vcpu->arch.regs[reg] = vcpu->arch.cr3;
-			vcpu_put_rsp_rip(vcpu);
-			skip_emulated_instruction(vcpu);
-			return 1;
-		case 8:
-			vcpu_load_rsp_rip(vcpu);
-			vcpu->arch.regs[reg] = get_cr8(vcpu);
-			vcpu_put_rsp_rip(vcpu);
-			skip_emulated_instruction(vcpu);
-			return 1;
-		}
-		break;
-	case 3: /* lmsw */
-		lmsw(vcpu, (exit_qualification >> LMSW_SOURCE_DATA_SHIFT) & 0x0f);
-
-		skip_emulated_instruction(vcpu);
-		return 1;
-	default:
-		break;
-	}
-	kvm_run->exit_reason = 0;
-	pr_unimpl(vcpu, "unhandled control register: op %d cr %d\n",
-	       (int)(exit_qualification >> 4) & 3, cr);
-	return 0;
-}
-
-static int handle_dr(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run)
-{
-	unsigned long exit_qualification;
-	unsigned long val;
-	int dr, reg;
-
-	/*
-	 * FIXME: this code assumes the host is debugging the guest.
-	 *        need to deal with guest debugging itself too.
-	 */
-	exit_qualification = vmcs_readl(EXIT_QUALIFICATION);
-	dr = exit_qualification & 7;
-	reg = (exit_qualification >> 8) & 15;
-	vcpu_load_rsp_rip(vcpu);
-	if (exit_qualification & 16) {
-		/* mov from dr */
-		switch (dr) {
-		case 6:
-			val = 0xffff0ff0;
-			break;
-		case 7:
-			val = 0x400;
-			break;
-		default:
-			val = 0;
-		}
-		vcpu->arch.regs[reg] = val;
-	} else {
-		/* mov to dr */
-	}
-	vcpu_put_rsp_rip(vcpu);
-	skip_emulated_instruction(vcpu);
-	return 1;
-}
-
-static int handle_cpuid(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run)
-{
-	kvm_emulate_cpuid(vcpu);
-	return 1;
-}
-
-static int handle_rdmsr(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run)
-{
-	u32 ecx = vcpu->arch.regs[VCPU_REGS_RCX];
-	u64 data;
-
-	if (vmx_get_msr(vcpu, ecx, &data)) {
-		kvm_inject_gp(vcpu, 0);
-		return 1;
-	}
-
-	/* FIXME: handling of bits 32:63 of rax, rdx */
-	vcpu->arch.regs[VCPU_REGS_RAX] = data & -1u;
-	vcpu->arch.regs[VCPU_REGS_RDX] = (data >> 32) & -1u;
-	skip_emulated_instruction(vcpu);
-	return 1;
-}
-
-static int handle_wrmsr(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run)
-{
-	u32 ecx = vcpu->arch.regs[VCPU_REGS_RCX];
-	u64 data = (vcpu->arch.regs[VCPU_REGS_RAX] & -1u)
-		| ((u64)(vcpu->arch.regs[VCPU_REGS_RDX] & -1u) << 32);
-
-	if (vmx_set_msr(vcpu, ecx, data) != 0) {
-		kvm_inject_gp(vcpu, 0);
-		return 1;
-	}
-
-	skip_emulated_instruction(vcpu);
-	return 1;
-}
-
-static int handle_tpr_below_threshold(struct kvm_vcpu *vcpu,
-				      struct kvm_run *kvm_run)
-{
-	return 1;
-}
-
-static int handle_interrupt_window(struct kvm_vcpu *vcpu,
-				   struct kvm_run *kvm_run)
-{
-	u32 cpu_based_vm_exec_control;
-
-	/* clear pending irq */
-	cpu_based_vm_exec_control = vmcs_read32(CPU_BASED_VM_EXEC_CONTROL);
-	cpu_based_vm_exec_control &= ~CPU_BASED_VIRTUAL_INTR_PENDING;
-	vmcs_write32(CPU_BASED_VM_EXEC_CONTROL, cpu_based_vm_exec_control);
-	/*
-	 * If the user space waits to inject interrupts, exit as soon as
-	 * possible
-	 */
-	if (kvm_run->request_interrupt_window &&
-	    !vcpu->arch.irq_summary) {
-		kvm_run->exit_reason = KVM_EXIT_IRQ_WINDOW_OPEN;
-		++vcpu->stat.irq_window_exits;
-		return 0;
-	}
-	return 1;
-}
-
-static int handle_halt(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run)
-{
-	skip_emulated_instruction(vcpu);
-	return kvm_emulate_halt(vcpu);
-}
-
-static int handle_vmcall(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run)
-{
-	skip_emulated_instruction(vcpu);
-	kvm_emulate_hypercall(vcpu);
-	return 1;
-}
-
-static int handle_wbinvd(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run)
-{
-	skip_emulated_instruction(vcpu);
-	/* TODO: Add support for VT-d/pass-through device */
-	return 1;
-}
-
-static int handle_apic_access(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run)
-{
-	u64 exit_qualification;
-	enum emulation_result er;
-	unsigned long offset;
-
-	exit_qualification = vmcs_read64(EXIT_QUALIFICATION);
-	offset = exit_qualification & 0xffful;
-
-	er = emulate_instruction(vcpu, kvm_run, 0, 0, 0);
-
-	if (er !=  EMULATE_DONE) {
-		printk(KERN_ERR
-		       "Fail to handle apic access vmexit! Offset is 0x%lx\n",
-		       offset);
-		return -ENOTSUPP;
-	}
-	return 1;
-}
-
-/*
- * The exit handlers return 1 if the exit was handled fully and guest execution
- * may resume.  Otherwise they set the kvm_run parameter to indicate what needs
- * to be done to userspace and return 0.
- */
-static int (*kvm_vmx_exit_handlers[])(struct kvm_vcpu *vcpu,
-				      struct kvm_run *kvm_run) = {
-	[EXIT_REASON_EXCEPTION_NMI]           = handle_exception,
-	[EXIT_REASON_EXTERNAL_INTERRUPT]      = handle_external_interrupt,
-	[EXIT_REASON_TRIPLE_FAULT]            = handle_triple_fault,
-	[EXIT_REASON_IO_INSTRUCTION]          = handle_io,
-	[EXIT_REASON_CR_ACCESS]               = handle_cr,
-	[EXIT_REASON_DR_ACCESS]               = handle_dr,
-	[EXIT_REASON_CPUID]                   = handle_cpuid,
-	[EXIT_REASON_MSR_READ]                = handle_rdmsr,
-	[EXIT_REASON_MSR_WRITE]               = handle_wrmsr,
-	[EXIT_REASON_PENDING_INTERRUPT]       = handle_interrupt_window,
-	[EXIT_REASON_HLT]                     = handle_halt,
-	[EXIT_REASON_VMCALL]                  = handle_vmcall,
-	[EXIT_REASON_TPR_BELOW_THRESHOLD]     = handle_tpr_below_threshold,
-	[EXIT_REASON_APIC_ACCESS]             = handle_apic_access,
-	[EXIT_REASON_WBINVD]                  = handle_wbinvd,
-};
-
-static const int kvm_vmx_max_exit_handlers =
-	ARRAY_SIZE(kvm_vmx_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)
-{
-	u32 exit_reason = vmcs_read32(VM_EXIT_REASON);
-	struct vcpu_vmx *vmx = to_vmx(vcpu);
-	u32 vectoring_info = vmx->idt_vectoring_info;
-
-	if (unlikely(vmx->fail)) {
-		kvm_run->exit_reason = KVM_EXIT_FAIL_ENTRY;
-		kvm_run->fail_entry.hardware_entry_failure_reason
-			= vmcs_read32(VM_INSTRUCTION_ERROR);
-		return 0;
-	}
-
-	if ((vectoring_info & VECTORING_INFO_VALID_MASK) &&
-				exit_reason != EXIT_REASON_EXCEPTION_NMI)
-		printk(KERN_WARNING "%s: unexpected, valid vectoring info and "
-		       "exit reason is 0x%x\n", __FUNCTION__, exit_reason);
-	if (exit_reason < kvm_vmx_max_exit_handlers
-	    && kvm_vmx_exit_handlers[exit_reason])
-		return kvm_vmx_exit_handlers[exit_reason](vcpu, kvm_run);
-	else {
-		kvm_run->exit_reason = KVM_EXIT_UNKNOWN;
-		kvm_run->hw.hardware_exit_reason = exit_reason;
-	}
-	return 0;
-}
-
-static void vmx_flush_tlb(struct kvm_vcpu *vcpu)
-{
-}
-
-static void update_tpr_threshold(struct kvm_vcpu *vcpu)
-{
-	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)) {
-		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);
-}
-
-static void enable_irq_window(struct kvm_vcpu *vcpu)
-{
-	u32 cpu_based_vm_exec_control;
-
-	cpu_based_vm_exec_control = vmcs_read32(CPU_BASED_VM_EXEC_CONTROL);
-	cpu_based_vm_exec_control |= CPU_BASED_VIRTUAL_INTR_PENDING;
-	vmcs_write32(CPU_BASED_VM_EXEC_CONTROL, cpu_based_vm_exec_control);
-}
-
-static void vmx_intr_assist(struct kvm_vcpu *vcpu)
-{
-	struct vcpu_vmx *vmx = to_vmx(vcpu);
-	u32 idtv_info_field, intr_info_field;
-	int has_ext_irq, interrupt_window_open;
-	int vector;
-
-	update_tpr_threshold(vcpu);
-
-	has_ext_irq = kvm_cpu_has_interrupt(vcpu);
-	intr_info_field = vmcs_read32(VM_ENTRY_INTR_INFO_FIELD);
-	idtv_info_field = vmx->idt_vectoring_info;
-	if (intr_info_field & INTR_INFO_VALID_MASK) {
-		if (idtv_info_field & INTR_INFO_VALID_MASK) {
-			/* TODO: fault when IDT_Vectoring */
-			if (printk_ratelimit())
-				printk(KERN_ERR "Fault when IDT_Vectoring\n");
-		}
-		if (has_ext_irq)
-			enable_irq_window(vcpu);
-		return;
-	}
-	if (unlikely(idtv_info_field & INTR_INFO_VALID_MASK)) {
-		if ((idtv_info_field & VECTORING_INFO_TYPE_MASK)
-		    == INTR_TYPE_EXT_INTR
-		    && vcpu->arch.rmode.active) {
-			u8 vect = idtv_info_field & VECTORING_INFO_VECTOR_MASK;
-
-			vmx_inject_irq(vcpu, vect);
-			if (unlikely(has_ext_irq))
-				enable_irq_window(vcpu);
-			return;
-		}
-
-		vmcs_write32(VM_ENTRY_INTR_INFO_FIELD, idtv_info_field);
-		vmcs_write32(VM_ENTRY_INSTRUCTION_LEN,
-				vmcs_read32(VM_EXIT_INSTRUCTION_LEN));
-
-		if (unlikely(idtv_info_field & INTR_INFO_DELIEVER_CODE_MASK))
-			vmcs_write32(VM_ENTRY_EXCEPTION_ERROR_CODE,
-				vmcs_read32(IDT_VECTORING_ERROR_CODE));
-		if (unlikely(has_ext_irq))
-			enable_irq_window(vcpu);
-		return;
-	}
-	if (!has_ext_irq)
-		return;
-	interrupt_window_open =
-		((vmcs_readl(GUEST_RFLAGS) & X86_EFLAGS_IF) &&
-		 (vmcs_read32(GUEST_INTERRUPTIBILITY_INFO) & 3) == 0);
-	if (interrupt_window_open) {
-		vector = kvm_cpu_get_interrupt(vcpu);
-		vmx_inject_irq(vcpu, vector);
-		kvm_timer_intr_post(vcpu, vector);
-	} else
-		enable_irq_window(vcpu);
-}
-
-/*
- * Failure to inject an interrupt should give us the information
- * in IDT_VECTORING_INFO_FIELD.  However, if the failure occurs
- * when fetching the interrupt redirection bitmap in the real-mode
- * tss, this doesn't happen.  So we do it ourselves.
- */
-static void fixup_rmode_irq(struct vcpu_vmx *vmx)
-{
-	vmx->rmode.irq.pending = 0;
-	if (vmcs_readl(GUEST_RIP) + 1 != vmx->rmode.irq.rip)
-		return;
-	vmcs_writel(GUEST_RIP, vmx->rmode.irq.rip);
-	if (vmx->idt_vectoring_info & VECTORING_INFO_VALID_MASK) {
-		vmx->idt_vectoring_info &= ~VECTORING_INFO_TYPE_MASK;
-		vmx->idt_vectoring_info |= INTR_TYPE_EXT_INTR;
-		return;
-	}
-	vmx->idt_vectoring_info =
-		VECTORING_INFO_VALID_MASK
-		| INTR_TYPE_EXT_INTR
-		| vmx->rmode.irq.vector;
-}
-
-static void vmx_vcpu_run(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run)
-{
-	struct vcpu_vmx *vmx = to_vmx(vcpu);
-	u32 intr_info;
-
-	/*
-	 * Loading guest fpu may have cleared host cr0.ts
-	 */
-	vmcs_writel(HOST_CR0, read_cr0());
-
-	asm(
-		/* Store host registers */
-#ifdef CONFIG_X86_64
-		"push %%rdx; push %%rbp;"
-		"push %%rcx \n\t"
-#else
-		"push %%edx; push %%ebp;"
-		"push %%ecx \n\t"
-#endif
-		ASM_VMX_VMWRITE_RSP_RDX "\n\t"
-		/* Check if vmlaunch of vmresume is needed */
-		"cmpl $0, %c[launched](%0) \n\t"
-		/* Load guest registers.  Don't clobber flags. */
-#ifdef CONFIG_X86_64
-		"mov %c[cr2](%0), %%rax \n\t"
-		"mov %%rax, %%cr2 \n\t"
-		"mov %c[rax](%0), %%rax \n\t"
-		"mov %c[rbx](%0), %%rbx \n\t"
-		"mov %c[rdx](%0), %%rdx \n\t"
-		"mov %c[rsi](%0), %%rsi \n\t"
-		"mov %c[rdi](%0), %%rdi \n\t"
-		"mov %c[rbp](%0), %%rbp \n\t"
-		"mov %c[r8](%0),  %%r8  \n\t"
-		"mov %c[r9](%0),  %%r9  \n\t"
-		"mov %c[r10](%0), %%r10 \n\t"
-		"mov %c[r11](%0), %%r11 \n\t"
-		"mov %c[r12](%0), %%r12 \n\t"
-		"mov %c[r13](%0), %%r13 \n\t"
-		"mov %c[r14](%0), %%r14 \n\t"
-		"mov %c[r15](%0), %%r15 \n\t"
-		"mov %c[rcx](%0), %%rcx \n\t" /* kills %0 (rcx) */
-#else
-		"mov %c[cr2](%0), %%eax \n\t"
-		"mov %%eax,   %%cr2 \n\t"
-		"mov %c[rax](%0), %%eax \n\t"
-		"mov %c[rbx](%0), %%ebx \n\t"
-		"mov %c[rdx](%0), %%edx \n\t"
-		"mov %c[rsi](%0), %%esi \n\t"
-		"mov %c[rdi](%0), %%edi \n\t"
-		"mov %c[rbp](%0), %%ebp \n\t"
-		"mov %c[rcx](%0), %%ecx \n\t" /* kills %0 (ecx) */
-#endif
-		/* Enter guest mode */
-		"jne .Llaunched \n\t"
-		ASM_VMX_VMLAUNCH "\n\t"
-		"jmp .Lkvm_vmx_return \n\t"
-		".Llaunched: " ASM_VMX_VMRESUME "\n\t"
-		".Lkvm_vmx_return: "
-		/* Save guest registers, load host registers, keep flags */
-#ifdef CONFIG_X86_64
-		"xchg %0,     (%%rsp) \n\t"
-		"mov %%rax, %c[rax](%0) \n\t"
-		"mov %%rbx, %c[rbx](%0) \n\t"
-		"pushq (%%rsp); popq %c[rcx](%0) \n\t"
-		"mov %%rdx, %c[rdx](%0) \n\t"
-		"mov %%rsi, %c[rsi](%0) \n\t"
-		"mov %%rdi, %c[rdi](%0) \n\t"
-		"mov %%rbp, %c[rbp](%0) \n\t"
-		"mov %%r8,  %c[r8](%0) \n\t"
-		"mov %%r9,  %c[r9](%0) \n\t"
-		"mov %%r10, %c[r10](%0) \n\t"
-		"mov %%r11, %c[r11](%0) \n\t"
-		"mov %%r12, %c[r12](%0) \n\t"
-		"mov %%r13, %c[r13](%0) \n\t"
-		"mov %%r14, %c[r14](%0) \n\t"
-		"mov %%r15, %c[r15](%0) \n\t"
-		"mov %%cr2, %%rax   \n\t"
-		"mov %%rax, %c[cr2](%0) \n\t"
-
-		"pop  %%rbp; pop  %%rbp; pop  %%rdx \n\t"
-#else
-		"xchg %0, (%%esp) \n\t"
-		"mov %%eax, %c[rax](%0) \n\t"
-		"mov %%ebx, %c[rbx](%0) \n\t"
-		"pushl (%%esp); popl %c[rcx](%0) \n\t"
-		"mov %%edx, %c[rdx](%0) \n\t"
-		"mov %%esi, %c[rsi](%0) \n\t"
-		"mov %%edi, %c[rdi](%0) \n\t"
-		"mov %%ebp, %c[rbp](%0) \n\t"
-		"mov %%cr2, %%eax  \n\t"
-		"mov %%eax, %c[cr2](%0) \n\t"
-
-		"pop %%ebp; pop %%ebp; pop %%edx \n\t"
-#endif
-		"setbe %c[fail](%0) \n\t"
-	      : : "c"(vmx), "d"((unsigned long)HOST_RSP),
-		[launched]"i"(offsetof(struct vcpu_vmx, launched)),
-		[fail]"i"(offsetof(struct vcpu_vmx, fail)),
-		[rax]"i"(offsetof(struct vcpu_vmx, vcpu.arch.regs[VCPU_REGS_RAX])),
-		[rbx]"i"(offsetof(struct vcpu_vmx, vcpu.arch.regs[VCPU_REGS_RBX])),
-		[rcx]"i"(offsetof(struct vcpu_vmx, vcpu.arch.regs[VCPU_REGS_RCX])),
-		[rdx]"i"(offsetof(struct vcpu_vmx, vcpu.arch.regs[VCPU_REGS_RDX])),
-		[rsi]"i"(offsetof(struct vcpu_vmx, vcpu.arch.regs[VCPU_REGS_RSI])),
-		[rdi]"i"(offsetof(struct vcpu_vmx, vcpu.arch.regs[VCPU_REGS_RDI])),
-		[rbp]"i"(offsetof(struct vcpu_vmx, vcpu.arch.regs[VCPU_REGS_RBP])),
-#ifdef CONFIG_X86_64
-		[r8]"i"(offsetof(struct vcpu_vmx, vcpu.arch.regs[VCPU_REGS_R8])),
-		[r9]"i"(offsetof(struct vcpu_vmx, vcpu.arch.regs[VCPU_REGS_R9])),
-		[r10]"i"(offsetof(struct vcpu_vmx, vcpu.arch.regs[VCPU_REGS_R10])),
-		[r11]"i"(offsetof(struct vcpu_vmx, vcpu.arch.regs[VCPU_REGS_R11])),
-		[r12]"i"(offsetof(struct vcpu_vmx, vcpu.arch.regs[VCPU_REGS_R12])),
-		[r13]"i"(offsetof(struct vcpu_vmx, vcpu.arch.regs[VCPU_REGS_R13])),
-		[r14]"i"(offsetof(struct vcpu_vmx, vcpu.arch.regs[VCPU_REGS_R14])),
-		[r15]"i"(offsetof(struct vcpu_vmx, vcpu.arch.regs[VCPU_REGS_R15])),
-#endif
-		[cr2]"i"(offsetof(struct vcpu_vmx, vcpu.arch.cr2))
-	      : "cc", "memory"
-#ifdef CONFIG_X86_64
-		, "rbx", "rdi", "rsi"
-		, "r8", "r9", "r10", "r11", "r12", "r13", "r14", "r15"
-#else
-		, "ebx", "edi", "rsi"
-#endif
-	      );
-
-	vmx->idt_vectoring_info = vmcs_read32(IDT_VECTORING_INFO_FIELD);
-	if (vmx->rmode.irq.pending)
-		fixup_rmode_irq(vmx);
-
-	vcpu->arch.interrupt_window_open =
-		(vmcs_read32(GUEST_INTERRUPTIBILITY_INFO) & 3) == 0;
-
-	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) == 0x200) /* nmi */
-		asm("int $2");
-}
-
-static void vmx_free_vmcs(struct kvm_vcpu *vcpu)
-{
-	struct vcpu_vmx *vmx = to_vmx(vcpu);
-
-	if (vmx->vmcs) {
-		on_each_cpu(__vcpu_clear, vmx, 0, 1);
-		free_vmcs(vmx->vmcs);
-		vmx->vmcs = NULL;
-	}
-}
-
-static void vmx_free_vcpu(struct kvm_vcpu *vcpu)
-{
-	struct vcpu_vmx *vmx = to_vmx(vcpu);
-
-	vmx_free_vmcs(vcpu);
-	kfree(vmx->host_msrs);
-	kfree(vmx->guest_msrs);
-	kvm_vcpu_uninit(vcpu);
-	kmem_cache_free(kvm_vcpu_cache, vmx);
-}
-
-static struct kvm_vcpu *vmx_create_vcpu(struct kvm *kvm, unsigned int id)
-{
-	int err;
-	struct vcpu_vmx *vmx = kmem_cache_zalloc(kvm_vcpu_cache, GFP_KERNEL);
-	int cpu;
-
-	if (!vmx)
-		return ERR_PTR(-ENOMEM);
-
-	err = kvm_vcpu_init(&vmx->vcpu, kvm, id);
-	if (err)
-		goto free_vcpu;
-
-	vmx->guest_msrs = kmalloc(PAGE_SIZE, GFP_KERNEL);
-	if (!vmx->guest_msrs) {
-		err = -ENOMEM;
-		goto uninit_vcpu;
-	}
-
-	vmx->host_msrs = kmalloc(PAGE_SIZE, GFP_KERNEL);
-	if (!vmx->host_msrs)
-		goto free_guest_msrs;
-
-	vmx->vmcs = alloc_vmcs();
-	if (!vmx->vmcs)
-		goto free_msrs;
-
-	vmcs_clear(vmx->vmcs);
-
-	cpu = get_cpu();
-	vmx_vcpu_load(&vmx->vcpu, cpu);
-	err = vmx_vcpu_setup(vmx);
-	vmx_vcpu_put(&vmx->vcpu);
-	put_cpu();
-	if (err)
-		goto free_vmcs;
-
-	return &vmx->vcpu;
-
-free_vmcs:
-	free_vmcs(vmx->vmcs);
-free_msrs:
-	kfree(vmx->host_msrs);
-free_guest_msrs:
-	kfree(vmx->guest_msrs);
-uninit_vcpu:
-	kvm_vcpu_uninit(&vmx->vcpu);
-free_vcpu:
-	kmem_cache_free(kvm_vcpu_cache, vmx);
-	return ERR_PTR(err);
-}
-
-static void __init vmx_check_processor_compat(void *rtn)
-{
-	struct vmcs_config vmcs_conf;
-
-	*(int *)rtn = 0;
-	if (setup_vmcs_config(&vmcs_conf) < 0)
-		*(int *)rtn = -EIO;
-	if (memcmp(&vmcs_config, &vmcs_conf, sizeof(struct vmcs_config)) != 0) {
-		printk(KERN_ERR "kvm: CPU %d feature inconsistency!\n",
-				smp_processor_id());
-		*(int *)rtn = -EIO;
-	}
-}
-
-static struct kvm_x86_ops vmx_x86_ops = {
-	.cpu_has_kvm_support = cpu_has_kvm_support,
-	.disabled_by_bios = vmx_disabled_by_bios,
-	.hardware_setup = hardware_setup,
-	.hardware_unsetup = hardware_unsetup,
-	.check_processor_compatibility = vmx_check_processor_compat,
-	.hardware_enable = hardware_enable,
-	.hardware_disable = hardware_disable,
-
-	.vcpu_create = vmx_create_vcpu,
-	.vcpu_free = vmx_free_vcpu,
-	.vcpu_reset = vmx_vcpu_reset,
-
-	.prepare_guest_switch = vmx_save_host_state,
-	.vcpu_load = vmx_vcpu_load,
-	.vcpu_put = vmx_vcpu_put,
-	.vcpu_decache = vmx_vcpu_decache,
-
-	.set_guest_debug = set_guest_debug,
-	.guest_debug_pre = kvm_guest_debug_pre,
-	.get_msr = vmx_get_msr,
-	.set_msr = vmx_set_msr,
-	.get_segment_base = vmx_get_segment_base,
-	.get_segment = vmx_get_segment,
-	.set_segment = vmx_set_segment,
-	.get_cs_db_l_bits = vmx_get_cs_db_l_bits,
-	.decache_cr4_guest_bits = vmx_decache_cr4_guest_bits,
-	.set_cr0 = vmx_set_cr0,
-	.set_cr3 = vmx_set_cr3,
-	.set_cr4 = vmx_set_cr4,
-#ifdef CONFIG_X86_64
-	.set_efer = vmx_set_efer,
-#endif
-	.get_idt = vmx_get_idt,
-	.set_idt = vmx_set_idt,
-	.get_gdt = vmx_get_gdt,
-	.set_gdt = vmx_set_gdt,
-	.cache_regs = vcpu_load_rsp_rip,
-	.decache_regs = vcpu_put_rsp_rip,
-	.get_rflags = vmx_get_rflags,
-	.set_rflags = vmx_set_rflags,
-
-	.tlb_flush = vmx_flush_tlb,
-
-	.run = vmx_vcpu_run,
-	.handle_exit = kvm_handle_exit,
-	.skip_emulated_instruction = skip_emulated_instruction,
-	.patch_hypercall = vmx_patch_hypercall,
-	.get_irq = vmx_get_irq,
-	.set_irq = vmx_inject_irq,
-	.queue_exception = vmx_queue_exception,
-	.exception_injected = vmx_exception_injected,
-	.inject_pending_irq = vmx_intr_assist,
-	.inject_pending_vectors = do_interrupt_requests,
-
-	.set_tss_addr = vmx_set_tss_addr,
-};
-
-static int __init vmx_init(void)
-{
-	void *iova;
-	int r;
-
-	vmx_io_bitmap_a = alloc_page(GFP_KERNEL | __GFP_HIGHMEM);
-	if (!vmx_io_bitmap_a)
-		return -ENOMEM;
-
-	vmx_io_bitmap_b = alloc_page(GFP_KERNEL | __GFP_HIGHMEM);
-	if (!vmx_io_bitmap_b) {
-		r = -ENOMEM;
-		goto out;
-	}
-
-	/*
-	 * Allow direct access to the PC debug port (it is often used for I/O
-	 * delays, but the vmexits simply slow things down).
-	 */
-	iova = kmap(vmx_io_bitmap_a);
-	memset(iova, 0xff, PAGE_SIZE);
-	clear_bit(0x80, iova);
-	kunmap(vmx_io_bitmap_a);
-
-	iova = kmap(vmx_io_bitmap_b);
-	memset(iova, 0xff, PAGE_SIZE);
-	kunmap(vmx_io_bitmap_b);
-
-	r = kvm_init(&vmx_x86_ops, sizeof(struct vcpu_vmx), THIS_MODULE);
-	if (r)
-		goto out1;
-
-	if (bypass_guest_pf)
-		kvm_mmu_set_nonpresent_ptes(~0xffeull, 0ull);
-
-	return 0;
-
-out1:
-	__free_page(vmx_io_bitmap_b);
-out:
-	__free_page(vmx_io_bitmap_a);
-	return r;
-}
-
-static void __exit vmx_exit(void)
-{
-	__free_page(vmx_io_bitmap_b);
-	__free_page(vmx_io_bitmap_a);
-
-	kvm_exit();
-}
-
-module_init(vmx_init)
-module_exit(vmx_exit)