Only read it if we're going to use it later.
Signed-off-by: Avi Kivity <[email protected]>
---
arch/x86/kvm/vmx.c | 9 +++++++--
1 files changed, 7 insertions(+), 2 deletions(-)
diff --git a/arch/x86/kvm/vmx.c b/arch/x86/kvm/vmx.c
index 36fbe11..36c889e 100644
--- a/arch/x86/kvm/vmx.c
+++ b/arch/x86/kvm/vmx.c
@@ -3885,6 +3885,7 @@ static void vmx_complete_atomic_exit(struct vcpu_vmx *vmx)
|| vmx->exit_reason == EXIT_REASON_EXCEPTION_NMI))
return;
+ vmx->exit_intr_info = vmcs_read32(VM_EXIT_INTR_INFO);
exit_intr_info = vmx->exit_intr_info;
/* Handle machine checks before interrupts are enabled */
@@ -3902,7 +3903,7 @@ static void vmx_complete_atomic_exit(struct vcpu_vmx *vmx)
static void vmx_recover_nmi_blocking(struct vcpu_vmx *vmx)
{
- u32 exit_intr_info = vmx->exit_intr_info;
+ u32 exit_intr_info;
bool unblock_nmi;
u8 vector;
bool idtv_info_valid;
@@ -3912,6 +3913,11 @@ static void vmx_recover_nmi_blocking(struct vcpu_vmx
*vmx)
if (cpu_has_virtual_nmis()) {
if (vmx->nmi_known_unmasked)
return;
+ /*
+ * Can't use vmx->exit_intr_info since we're not sure what
+ * the exit reason is.
+ */
+ exit_intr_info = vmcs_read32(VM_EXIT_INTR_INFO);
unblock_nmi = (exit_intr_info & INTR_INFO_UNBLOCK_NMI) != 0;
vector = exit_intr_info & INTR_INFO_VECTOR_MASK;
/*
@@ -4159,7 +4165,6 @@ static void __noclone vmx_vcpu_run(struct kvm_vcpu *vcpu)
vmx->launched = 1;
vmx->exit_reason = vmcs_read32(VM_EXIT_REASON);
- vmx->exit_intr_info = vmcs_read32(VM_EXIT_INTR_INFO);
vmx_complete_atomic_exit(vmx);
vmx_recover_nmi_blocking(vmx);
--
1.7.1
--
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