Move the exit reason checks to the front of the function, for early exit in the common case.
Signed-off-by: Avi Kivity <[email protected]> --- 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 -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
