Move the exit reason checks to the front of the function, for early
exit in the common case.
Signed-off-by: Avi Kivity <avi@xxxxxxxxxx>
---
arch/x86/kvm/vmx.c | 15 +++++++++------
1 files changed, 9 insertions(+), 6 deletions(-)
diff --git a/arch/x86/kvm/vmx.c b/arch/x86/kvm/vmx.c
index 6eadeaf..36fbe11 100644
--- a/arch/x86/kvm/vmx.c
+++ b/arch/x86/kvm/vmx.c
@@ -3879,17 +3879,20 @@ static void update_cr8_intercept(struct kvm_vcpu *vcpu, int tpr, int irr)
static void vmx_complete_atomic_exit(struct vcpu_vmx *vmx)
{
- u32 exit_intr_info = vmx->exit_intr_info;
+ u32 exit_intr_info;
+
+ if (!(vmx->exit_reason == EXIT_REASON_MCE_DURING_VMENTRY
+ || vmx->exit_reason == EXIT_REASON_EXCEPTION_NMI))
+ return;
+
+ exit_intr_info = vmx->exit_intr_info;
/* Handle machine checks before interrupts are enabled */
- if ((vmx->exit_reason == EXIT_REASON_MCE_DURING_VMENTRY)
- || (vmx->exit_reason == EXIT_REASON_EXCEPTION_NMI
- && is_machine_check(exit_intr_info)))
+ if (is_machine_check(exit_intr_info))
kvm_machine_check();
/* We need to handle NMIs before interrupts are enabled */
- if (vmx->exit_reason == EXIT_REASON_EXCEPTION_NMI &&
- (exit_intr_info & INTR_INFO_INTR_TYPE_MASK) == INTR_TYPE_NMI_INTR &&
+ if ((exit_intr_info & INTR_INFO_INTR_TYPE_MASK) == INTR_TYPE_NMI_INTR &&
(exit_intr_info & INTR_INFO_VALID_MASK)) {
kvm_before_handle_nmi(&vmx->vcpu);
asm("int $2");
--
1.7.1
--
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