[PATCH 09/10] KVM: VMX: Cache vmx->exit_reason in local u16 in vmx_handle_exit_irqoff()

From: Sean Christopherson
Date: Thu Mar 12 2020 - 14:45:44 EST


Use a u16 to hold the exit reason in vmx_handle_exit_irqoff(), as the
checks for INTR/NMI/WRMSR expect to encounter only the basic exit reason
in vmx->exit_reason.

Signed-off-by: Sean Christopherson <sean.j.christopherson@xxxxxxxxx>
---
arch/x86/kvm/vmx/vmx.c | 10 +++++-----
1 file changed, 5 insertions(+), 5 deletions(-)

diff --git a/arch/x86/kvm/vmx/vmx.c b/arch/x86/kvm/vmx/vmx.c
index d43e1d28bb58..910a7cadeaf7 100644
--- a/arch/x86/kvm/vmx/vmx.c
+++ b/arch/x86/kvm/vmx/vmx.c
@@ -6287,16 +6287,16 @@ static void handle_external_interrupt_irqoff(struct kvm_vcpu *vcpu)
STACK_FRAME_NON_STANDARD(handle_external_interrupt_irqoff);

static void vmx_handle_exit_irqoff(struct kvm_vcpu *vcpu,
- enum exit_fastpath_completion *exit_fastpath)
+ enum exit_fastpath_completion *exit_fastpath)
{
struct vcpu_vmx *vmx = to_vmx(vcpu);
+ u16 exit_reason = vmx->exit_reason;

- if (vmx->exit_reason == EXIT_REASON_EXTERNAL_INTERRUPT)
+ if (exit_reason == EXIT_REASON_EXTERNAL_INTERRUPT)
handle_external_interrupt_irqoff(vcpu);
- else if (vmx->exit_reason == EXIT_REASON_EXCEPTION_NMI)
+ else if (exit_reason == EXIT_REASON_EXCEPTION_NMI)
handle_exception_nmi_irqoff(vmx);
- else if (!is_guest_mode(vcpu) &&
- vmx->exit_reason == EXIT_REASON_MSR_WRITE)
+ else if (!is_guest_mode(vcpu) && exit_reason == EXIT_REASON_MSR_WRITE)
*exit_fastpath = handle_fastpath_set_msr_irqoff(vcpu);
}

--
2.24.1