From: Orit Wasserman <[email protected]>
---
arch/x86/kvm/vmx.c | 521 +++++++++++++++++++++++++++++++++++++++++++++++++++-
1 files changed, 515 insertions(+), 6 deletions(-)
diff --git a/arch/x86/kvm/vmx.c b/arch/x86/kvm/vmx.c
index 0d36b49..203f016 100644
--- a/arch/x86/kvm/vmx.c
+++ b/arch/x86/kvm/vmx.c
@@ -262,6 +262,10 @@ struct nested_vmx {
gpa_t current_vmptr;
/* Are we running nested guest */
bool nested_mode;
+ /* L1 requested VMLAUNCH or VMRESUME but we didn't run L2 yet */
+ bool nested_run_pending;
+ /* flag indicating if there was a valid IDT after exiting from l2 */
+ bool valid_idt_vectoring_info;
/* Level 1 state for switching to level 2 and back */
struct level_state *l1_state;
/* Level 1 shadow vmcs for switching to level 2 and back */
@@ -908,9 +912,16 @@ static u64 host_efer;
static void ept_save_pdptrs(struct kvm_vcpu *vcpu);
static int nested_vmx_check_permission(struct kvm_vcpu *vcpu);
+static int nested_vmx_check_exception(struct vcpu_vmx *vmx, unsigned nr,
+ bool has_error_code, u32 error_code);
+static int nested_vmx_intr(struct kvm_vcpu *vcpu);
static int create_l1_state(struct kvm_vcpu *vcpu);
static int create_l2_state(struct kvm_vcpu *vcpu);
static int launch_guest(struct kvm_vcpu *vcpu, bool launch);
+static int nested_vmx_exit_handled_msr(struct kvm_vcpu *vcpu);
+static int nested_vmx_exit_handled(struct kvm_vcpu *vcpu, bool kvm_override);
+static int nested_vmx_vmexit(struct kvm_vcpu *vcpu,
+ bool is_interrupt);
/*
* Keep MSR_K6_STAR at the end, as setup_msrs() will try to optimize it
@@ -1467,6 +1478,8 @@ static void vmx_load_host_state(struct vcpu_vmx *vmx)
static void vmx_fpu_deactivate(struct kvm_vcpu *vcpu);
+int load_vmcs_host_state(struct shadow_vmcs *src);
+
/*
* Switches to specified vcpu, until a matching vcpu_put(), but assumes
* vcpu mutex is already taken.
@@ -1503,6 +1516,7 @@ static void vmx_vcpu_load(struct kvm_vcpu *vcpu, int cpu)
if (vcpu->cpu != cpu) {
struct descriptor_table dt;
unsigned long sysenter_esp;
+ struct shadow_vmcs *l1_shadow_vmcs = vmx->nested.l1_shadow_vmcs;
vcpu->cpu = cpu;
/*
@@ -1525,6 +1539,22 @@ static void vmx_vcpu_load(struct kvm_vcpu *vcpu, int cpu)
new_offset = vmcs_read64(TSC_OFFSET) + delta;
vmcs_write64(TSC_OFFSET, new_offset);
}
+
+ if (l1_shadow_vmcs != NULL) {
+ l1_shadow_vmcs->host_tr_base =
+ vmcs_readl(HOST_TR_BASE);
+ l1_shadow_vmcs->host_gdtr_base =
+ vmcs_readl(HOST_GDTR_BASE);
+ l1_shadow_vmcs->host_ia32_sysenter_esp =
+ vmcs_readl(HOST_IA32_SYSENTER_ESP);
+
+ if (tsc_this < vcpu->arch.host_tsc)
+ l1_shadow_vmcs->tsc_offset =
+ vmcs_read64(TSC_OFFSET);
+
+ if (vmx->nested.nested_mode)
+ load_vmcs_host_state(l1_shadow_vmcs);
+ }
}
}
@@ -1611,6 +1641,9 @@ static void vmx_queue_exception(struct kvm_vcpu *vcpu,
unsigned nr,
struct vcpu_vmx *vmx = to_vmx(vcpu);
u32 intr_info = nr | INTR_INFO_VALID_MASK;
+ if (nested_vmx_check_exception(vmx, nr, has_error_code, error_code))
+ return;
+
if (has_error_code) {
vmcs_write32(VM_ENTRY_EXCEPTION_ERROR_CODE, error_code);
intr_info |= INTR_INFO_DELIVER_CODE_MASK;
@@ -2185,9 +2218,6 @@ int load_vmcs_common(struct shadow_vmcs *src)
if (vmcs_config.vmentry_ctrl & VM_ENTRY_LOAD_IA32_PAT)
vmcs_write64(GUEST_IA32_PAT, src->guest_ia32_pat);
- if (src->vm_entry_msr_load_count < 512)
- vmcs_write32(VM_ENTRY_MSR_LOAD_COUNT,
src->vm_entry_msr_load_count);
-
vmcs_write32(VM_ENTRY_INTR_INFO_FIELD, src->vm_entry_intr_info_field);
vmcs_write32(VM_ENTRY_EXCEPTION_ERROR_CODE,
src->vm_entry_exception_error_code);
@@ -3794,6 +3824,11 @@ static void enable_irq_window(struct kvm_vcpu *vcpu)
{
u32 cpu_based_vm_exec_control;
+ if (to_vmx(vcpu)->nested.nested_mode) {
+ nested_vmx_intr(vcpu);
+ return;
+ }
+
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);
@@ -3922,6 +3957,11 @@ static void vmx_set_nmi_mask(struct kvm_vcpu *vcpu, bool
masked)
static int vmx_interrupt_allowed(struct kvm_vcpu *vcpu)
{
+ if (to_vmx(vcpu)->nested.nested_mode) {
+ if (!nested_vmx_intr(vcpu))
+ return 0;
+ }
+
return (vmcs_readl(GUEST_RFLAGS) & X86_EFLAGS_IF) &&
!(vmcs_read32(GUEST_INTERRUPTIBILITY_INFO) &
(GUEST_INTR_STATE_STI | GUEST_INTR_STATE_MOV_SS));
@@ -4042,6 +4082,10 @@ static int handle_exception(struct kvm_vcpu *vcpu)
not interested (exception bitmap 12 does not include
NM_VECTOR)
enable fpu and resume l2 (avoid switching to l1)
*/
+
+ if (vmx->nested.nested_mode)
+ vmx->nested.nested_run_pending = 1; /* removing this
line cause hung on boot of l2*/
+
vmx_fpu_activate(vcpu);
return 1;
@@ -4169,7 +4213,33 @@ static int handle_cr(struct kvm_vcpu *vcpu)
trace_kvm_cr_write(cr, val);
switch (cr) {
case 0:
- kvm_set_cr0(vcpu, val);
+ if (to_vmx(vcpu)->nested.nested_mode) {
+ /* assume only X86_CR0_TS is handled by l0 */
+ long new_cr0 = vmcs_readl(GUEST_CR0);
+ long new_cr0_read_shadow =
vmcs_readl(CR0_READ_SHADOW);
+
+ vmx_fpu_deactivate(vcpu);
+
+ if (val & X86_CR0_TS) {
+ new_cr0 |= X86_CR0_TS;
+ new_cr0_read_shadow |= X86_CR0_TS;
+ vcpu->arch.cr0 |= X86_CR0_TS;
+ } else {
+ new_cr0 &= ~X86_CR0_TS;
+ new_cr0_read_shadow &= ~X86_CR0_TS;
+ vcpu->arch.cr0 &= X86_CR0_TS;
+ }
+
+ vmcs_writel(GUEST_CR0, new_cr0);
+ vmcs_writel(CR0_READ_SHADOW,
new_cr0_read_shadow);
+
+ if (!(val & X86_CR0_TS) || !(val & X86_CR0_PE))
+ vmx_fpu_activate(vcpu);
+
+ to_vmx(vcpu)->nested.nested_run_pending = 1;
+ } else
+ kvm_set_cr0(vcpu, val);
+
skip_emulated_instruction(vcpu);
return 1;
case 3:
@@ -4196,8 +4266,15 @@ static int handle_cr(struct kvm_vcpu *vcpu)
break;
case 2: /* clts */
vmx_fpu_deactivate(vcpu);
- vcpu->arch.cr0 &= ~X86_CR0_TS;
- vmcs_writel(CR0_READ_SHADOW, vcpu->arch.cr0);
+ if (to_vmx(vcpu)->nested.nested_mode) {
+ vmcs_writel(GUEST_CR0, vmcs_readl(GUEST_CR0) &
~X86_CR0_TS);
+ vmcs_writel(CR0_READ_SHADOW,
vmcs_readl(CR0_READ_SHADOW) & ~X86_CR0_TS);
+ vcpu->arch.cr0 &= ~X86_CR0_TS;
+ to_vmx(vcpu)->nested.nested_run_pending = 1;
+ } else {
+ vcpu->arch.cr0 &= ~X86_CR0_TS;
+ vmcs_writel(CR0_READ_SHADOW, vcpu->arch.cr0);
+ }
vmx_fpu_activate(vcpu);
skip_emulated_instruction(vcpu);
return 1;
@@ -5173,6 +5250,17 @@ static int vmx_handle_exit(struct kvm_vcpu *vcpu)
if (vmx->emulation_required && emulate_invalid_guest_state)
return handle_invalid_guest_state(vcpu);
+ if (exit_reason == EXIT_REASON_VMLAUNCH ||
+ exit_reason == EXIT_REASON_VMRESUME)
+ vmx->nested.nested_run_pending = 1;
+ else
+ vmx->nested.nested_run_pending = 0;
+
+ if (vmx->nested.nested_mode && nested_vmx_exit_handled(vcpu, true)) {
+ nested_vmx_vmexit(vcpu, false);
+ return 1;
+ }
+
/* Access CR3 don't cause VMExit in paging mode, so we need
* to sync with guest real CR3. */
if (enable_ept && is_paging(vcpu))
@@ -5347,6 +5435,60 @@ static void fixup_rmode_irq(struct vcpu_vmx *vmx)
| vmx->rmode.irq.vector;
}
+static int nested_handle_valid_idt(struct kvm_vcpu *vcpu)
+{
+ struct vcpu_vmx *vmx = to_vmx(vcpu);
+ int irq;
+ int type;
+ int errCodeValid;
+ u32 idt_vectoring_info;
+ u32 guest_intr;
+ bool nmi_window_open;
+ bool interrupt_window_open;
+
+ if (vmx->nested.valid_idt_vectoring_info) {
+ idt_vectoring_info = vmcs_read32(IDT_VECTORING_INFO_FIELD);
+ irq = idt_vectoring_info & VECTORING_INFO_VECTOR_MASK;
+ type = idt_vectoring_info & VECTORING_INFO_TYPE_MASK;
+ errCodeValid = idt_vectoring_info &
+ VECTORING_INFO_DELIVER_CODE_MASK;
+
+ guest_intr = vmcs_read32(GUEST_INTERRUPTIBILITY_INFO);
+ nmi_window_open =
+ !(guest_intr & (GUEST_INTR_STATE_STI |
+ GUEST_INTR_STATE_MOV_SS |
+ GUEST_INTR_STATE_NMI));
+
+ interrupt_window_open =
+ ((vmcs_readl(GUEST_RFLAGS) & X86_EFLAGS_IF) &&
+ !(guest_intr & (GUEST_INTR_STATE_STI |
+ GUEST_INTR_STATE_MOV_SS)));
+
+ if (type == INTR_TYPE_EXT_INTR && !interrupt_window_open) {
+ printk(KERN_INFO "IDT ignored, l2 interrupt window
closed!\n");
+ return 0;
+ }
+
+ if (type == INTR_TYPE_NMI_INTR && !nmi_window_open) {
+ printk(KERN_INFO "IDT ignored, l2 nmi window
closed!\n");
+ return 0;
+ }
+
+ vmcs_write32(VM_ENTRY_INTR_INFO_FIELD,
+ irq | type | INTR_INFO_VALID_MASK | errCodeValid);
+
+
+ vmcs_write32(VM_ENTRY_INSTRUCTION_LEN,
+ vmcs_read32(VM_EXIT_INSTRUCTION_LEN));
+
+ if (errCodeValid)
+ vmcs_write32(VM_ENTRY_EXCEPTION_ERROR_CODE,
+ vmcs_read32(IDT_VECTORING_ERROR_CODE));
+ }
+
+ return 1;
+}
+
#ifdef CONFIG_X86_64
#define R "r"
#define Q "q"
@@ -5358,8 +5500,17 @@ static void fixup_rmode_irq(struct vcpu_vmx *vmx)
static void vmx_vcpu_run(struct kvm_vcpu *vcpu)
{
struct vcpu_vmx *vmx = to_vmx(vcpu);
+ int r;
u32 nested_exception_bitmap = 0;
+ if (vmx->nested.nested_mode) {
+ r = nested_handle_valid_idt(vcpu);
+ if (!r) {
+ vmx->fail = 1;
+ return;
+ }
+ }
+
/* Record the guest's net vcpu time for enforced NMI injections. */
if (unlikely(!cpu_has_virtual_nmis() && vmx->soft_vnmi_blocked))
vmx->entry_time = ktime_get();
@@ -5539,6 +5690,9 @@ static void vmx_vcpu_run(struct kvm_vcpu *vcpu)
vmx->idt_vectoring_info = vmcs_read32(IDT_VECTORING_INFO_FIELD);
+ vmx->nested.valid_idt_vectoring_info = vmx->nested.nested_mode &&
+ (vmx->idt_vectoring_info & VECTORING_INFO_VALID_MASK);
+
if (vmx->rmode.irq.pending)
fixup_rmode_irq(vmx);
@@ -6191,6 +6345,7 @@ static int nested_vmx_run(struct kvm_vcpu *vcpu)
r = kvm_mmu_load(vcpu);
if (unlikely(r)) {
printk(KERN_ERR "Error in kvm_mmu_load r %d\n", r);
+ nested_vmx_vmexit(vcpu, false);
set_rflags_to_vmx_fail_valid(vcpu);
/* switch back to L1 */
vmx->nested.nested_mode = 0;
@@ -6244,6 +6399,360 @@ static int launch_guest(struct kvm_vcpu *vcpu, bool
launch)
return 1;
}
+static int nested_vmx_vmexit(struct kvm_vcpu *vcpu,
+ bool is_interrupt)
+{
+ struct vcpu_vmx *vmx = to_vmx(vcpu);
+ struct level_state *l2_state;
+ int efer_offset;
+
+ if (!vmx->nested.nested_mode) {
+ printk(KERN_INFO "WARNING: %s called but not in nested mode\n",
+ __func__);
+ return 0;
+ }
+
+ sync_cached_regs_to_vmcs(vcpu);
+
+ if (!nested_map_current(vcpu)) {
+ printk(KERN_INFO "Error mapping shadow vmcs\n");
+ set_rflags_to_vmx_fail_valid(vcpu);
+ return 1;
+ }
+
+ l2_state = &(vmx->nested.current_l2_page->l2_state);
+ prepare_vmcs_12(vcpu);
+ if (is_interrupt)
+ get_shadow_vmcs(vcpu)->vm_exit_reason =
+ EXIT_REASON_EXTERNAL_INTERRUPT;
+
+ l2_state->launched = vmx->launched;
+ l2_state->cpu = vcpu->cpu;
+
+ nested_unmap_current(vcpu);
+
+ vmx->vmcs = vmx->nested.l1_vmcs;
+ vcpu->cpu = vmx->nested.l1_state->cpu;
+ vmx->launched = vmx->nested.l1_state->launched;
+
+ vmx_vcpu_load(vcpu, get_cpu());
+ put_cpu();
+
+ vcpu->arch.shadow_efer = vmx->nested.l1_state->shadow_efer;
+ if ((vcpu->arch.shadow_efer & EFER_LMA) &&
+ !(vcpu->arch.shadow_efer & EFER_SCE))
+ vcpu->arch.shadow_efer |= EFER_SCE;
+
+ efer_offset = __find_msr_index(vmx, MSR_EFER);
+ if (update_transition_efer(vmx, efer_offset))
+ wrmsrl(MSR_EFER, vmx->guest_msrs[efer_offset].data);
+
+ vmx_set_cr0(vcpu, vmx->nested.l1_shadow_vmcs->cr0_read_shadow);
+ vmx_set_cr4(vcpu, vmx->nested.l1_state->cr4);
+
+ if (enable_ept) {
+ vcpu->arch.cr3 = vmx->nested.l1_shadow_vmcs->guest_cr3;
+ vmcs_write32(GUEST_CR3, vmx->nested.l1_shadow_vmcs->guest_cr3);
+ } else {
+ kvm_set_cr3(vcpu, vmx->nested.l1_state->cr3);
+ }
+
+ if (!nested_map_current(vcpu)) {
+ printk(KERN_INFO "Error mapping shadow vmcs\n");
+ set_rflags_to_vmx_fail_valid(vcpu);
+ return 1;
+ }
+
+ switch_back_vmcs(vcpu);
+
+ vmx->nested.l1_shadow_vmcs->guest_cr0 = get_shadow_vmcs(vcpu)->host_cr0;
+
+ nested_unmap_current(vcpu);
+
+ kvm_register_write(vcpu, VCPU_REGS_RSP,
+ vmx->nested.l1_shadow_vmcs->guest_rsp);
+ kvm_register_write(vcpu, VCPU_REGS_RIP,
+ vmx->nested.l1_shadow_vmcs->guest_rip);
+
+ vmx->nested.nested_mode = 0;
+
+ kvm_mmu_reset_context(vcpu);
+ kvm_mmu_load(vcpu);
+
+ if (unlikely(vmx->fail)) {
+ vmx->fail = 0;
+ set_rflags_to_vmx_fail_valid(vcpu);
+ } else
+ clear_rflags_cf_zf(vcpu);
+
+ return 0;
+}
+
+static int nested_vmx_exit_handled_msr(struct kvm_vcpu *vcpu)
+{
+ if (to_vmx(vcpu)->nested.nested_mode) {
+ struct page *msr_page = NULL;
+ u32 msr_index = vcpu->arch.regs[VCPU_REGS_RCX];
+ u32 exit_code = vmcs_read32(VM_EXIT_REASON);
+ struct shadow_vmcs *l2svmcs = get_shadow_vmcs(vcpu);
+
+ if (!cpu_has_vmx_msr_bitmap()
+ || !nested_cpu_has_vmx_msr_bitmap(vcpu))
+ return 1;
+
+ msr_page = nested_get_page(vcpu,
+ l2svmcs->msr_bitmap);
+
+ if (!msr_page) {
+ printk(KERN_INFO "%s error in nested_get_page\n",
+ __func__);
+ return 0;
+ }
+
+ switch (exit_code) {
+ case EXIT_REASON_MSR_READ:
+ if (msr_index <= 0x1fff) {
+ if (test_bit(msr_index,
+ (unsigned long *)(msr_page +
+ 0x000)))
+ return 1;
+ } else if ((msr_index >= 0xc0000000) &&
+ (msr_index <= 0xc0001fff)) {
+ msr_index &= 0x1fff;
+ if (test_bit(msr_index,
+ (unsigned long *)(msr_page +
+ 0x400)))
+ return 1;
+ }
+ break;
+ case EXIT_REASON_MSR_WRITE:
+ if (msr_index <= 0x1fff) {
+ if (test_bit(msr_index,
+ (unsigned long *)(msr_page +
+ 0x800)))
+ return 1;
+ } else if ((msr_index >= 0xc0000000) &&
+ (msr_index <= 0xc0001fff)) {
+ msr_index &= 0x1fff;
+ if (test_bit(msr_index,
+ (unsigned long *)(msr_page +
+ 0xc00)))
+ return 1;
+ }
+ break;
+ }
+ }
+
+ return 0;
+}
+
+static int nested_vmx_exit_handled(struct kvm_vcpu *vcpu, bool kvm_override)
+{
+ u32 exit_code = vmcs_read32(VM_EXIT_REASON);
+ struct vcpu_vmx *vmx = to_vmx(vcpu);
+ u32 intr_info = vmcs_read32(VM_EXIT_INTR_INFO);
+ struct shadow_vmcs *l2svmcs;
+
+ int r = 0;
+
+ if (vmx->nested.nested_run_pending)
+ return 0;
+
+ if (unlikely(vmx->fail)) {
+ printk(KERN_INFO "%s failed vm entry %x\n",
+ __func__, vmcs_read32(VM_INSTRUCTION_ERROR));
+ return 1;
+ }
+
+ if (kvm_override) {
+ switch (exit_code) {
+ case EXIT_REASON_EXTERNAL_INTERRUPT:
+ return 0;
+ case EXIT_REASON_EXCEPTION_NMI:
+ if (!is_exception(intr_info))
+ return 0;
+
+ if (is_page_fault(intr_info) && (!enable_ept))
+ return 0;
+
+ break;
+ case EXIT_REASON_EPT_VIOLATION:
+ if (enable_ept)
+ return 0;
+
+ break;
+ }
+ }
+
+
+ if (!nested_map_current(vcpu))
+ return 0;
+
+ l2svmcs = get_shadow_vmcs(vcpu);
+
+ switch (exit_code) {
+ case EXIT_REASON_INVLPG:
+ if (l2svmcs->cpu_based_vm_exec_control &
+ CPU_BASED_INVLPG_EXITING)
+ r = 1;
+ break;
+ case EXIT_REASON_MSR_READ:
+ case EXIT_REASON_MSR_WRITE:
+ r = nested_vmx_exit_handled_msr(vcpu);
+ break;
+ case EXIT_REASON_CR_ACCESS: {
+ unsigned long exit_qualification =
+ vmcs_readl(EXIT_QUALIFICATION);
+ int cr = exit_qualification & 15;
+ int reg = (exit_qualification >> 8) & 15;
+ unsigned long val = kvm_register_read(vcpu, reg);
+
+ switch ((exit_qualification >> 4) & 3) {
+ case 0: /* mov to cr */
+ switch (cr) {
+ case 0:
+ if (l2svmcs->cr0_guest_host_mask &
+ (val ^ l2svmcs->cr0_read_shadow))
+ r = 1;
+ break;
+ case 3:
+ if (l2svmcs->cpu_based_vm_exec_control &
+ CPU_BASED_CR3_LOAD_EXITING)
+ r = 1;
+ break;
+ case 4:
+ if (l2svmcs->cr4_guest_host_mask &
+ (l2svmcs->cr4_read_shadow ^ val))
+ r = 1;
+ break;
+ case 8:
+ if (l2svmcs->cpu_based_vm_exec_control &
+ CPU_BASED_CR8_LOAD_EXITING)
+ r = 1;
+ break;
+ }
+ break;
+ case 2: /* clts */
+ if (l2svmcs->cr0_guest_host_mask & X86_CR0_TS)
+ r = 1;
+ break;
+ case 1: /*mov from cr*/
+ switch (cr) {
+ case 0:
+ r = 1;
+ case 3:
+ if (l2svmcs->cpu_based_vm_exec_control &
+ CPU_BASED_CR3_STORE_EXITING)
+ r = 1;
+ break;
+ case 4:
+ r = 1;
+ break;
+ case 8:
+ if (l2svmcs->cpu_based_vm_exec_control &
+ CPU_BASED_CR8_STORE_EXITING)
+ r = 1;
+ break;
+ }
+ break;
+ case 3: /* lmsw */
+ if (l2svmcs->cr0_guest_host_mask &
+ (val ^ l2svmcs->cr0_read_shadow))
+ r = 1;
+ break;
+ }
+ break;
+ }
+ case EXIT_REASON_DR_ACCESS: {
+ if (l2svmcs->cpu_based_vm_exec_control &
+ CPU_BASED_MOV_DR_EXITING)
+ r = 1;
+ break;
+ }
+
+ case EXIT_REASON_EXCEPTION_NMI: {
+
+ if (is_external_interrupt(intr_info) &&
+ (l2svmcs->pin_based_vm_exec_control &
+ PIN_BASED_EXT_INTR_MASK))
+ r = 1;
+ else if (is_nmi(intr_info) &&
+ (l2svmcs->pin_based_vm_exec_control &
+ PIN_BASED_NMI_EXITING))
+ r = 1;
+ else if (is_exception(intr_info) &&
+ (l2svmcs->exception_bitmap &
+ (1u << (intr_info & INTR_INFO_VECTOR_MASK))))
+ r = 1;
+ else if (is_page_fault(intr_info))
+ r = 1;
+ break;
+ }
+
+ case EXIT_REASON_EXTERNAL_INTERRUPT:
+ if (l2svmcs->pin_based_vm_exec_control &
+ PIN_BASED_EXT_INTR_MASK)
+ r = 1;
+ break;
+ default:
+ r = 1;
+ }
+ nested_unmap_current(vcpu);
+
+ return r;
+}
+
+static int nested_vmx_check_exception(struct vcpu_vmx *vmx, unsigned nr,
+ bool has_error_code, u32 error_code)
+{
+ if (vmx->nested.nested_mode) {
+ if (nested_vmx_exit_handled(&vmx->vcpu, false)) {
+ nested_vmx_vmexit(&vmx->vcpu, false);
+ if (!nested_map_current(&vmx->vcpu))
+ return 1;
+ get_shadow_vmcs(&vmx->vcpu)->vm_exit_reason =
+ EXIT_REASON_EXCEPTION_NMI;
+ get_shadow_vmcs(&vmx->vcpu)->vm_exit_intr_info =
+ (nr | INTR_TYPE_HARD_EXCEPTION
+ | (has_error_code ?
+ INTR_INFO_DELIVER_CODE_MASK : 0)
+ | INTR_INFO_VALID_MASK);
+
+ if (has_error_code)
+ get_shadow_vmcs(&vmx->vcpu)->
+ vm_exit_intr_error_code = error_code;
+ nested_unmap_current(&vmx->vcpu);
+ return 1;
+ }
+ }
+ return 0;
+}
+
+static int nested_vmx_intr(struct kvm_vcpu *vcpu)
+{
+ struct vcpu_vmx *vmx = to_vmx(vcpu);
+
+ if (!nested_map_current(vcpu))
+ return 0;
+
+ if (get_shadow_vmcs(vcpu)->pin_based_vm_exec_control &
+ PIN_BASED_EXT_INTR_MASK) {
+
+ if (vmx->nested.nested_run_pending) {
+ nested_unmap_current(vcpu);
+ return 0;
+ }
+
+ nested_unmap_current(vcpu);
+ nested_vmx_vmexit(vcpu, true);
+ return 1;
+ }
+
+ nested_unmap_current(vcpu);
+
+ return 0;
+}
+
static struct kvm_x86_ops vmx_x86_ops = {
.cpu_has_kvm_support = cpu_has_kvm_support,
.disabled_by_bios = vmx_disabled_by_bios,
--
1.6.0.4
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