[PATCH 1/2] KVM: VMX: Invoke kvm_exit tracepoint on VM-Exit due to failed VM-Enter

From: Sean Christopherson
Date: Fri May 08 2020 - 19:53:59 EST


Restore the pre-fastpath behavior of tracing all VM-Exits, including
those due to failed VM-Enter.

Fixes: 032e5dcbcb443 ("KVM: VMX: Introduce generic fastpath handler")
Signed-off-by: Sean Christopherson <sean.j.christopherson@xxxxxxxxx>
---
arch/x86/kvm/vmx/vmx.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/arch/x86/kvm/vmx/vmx.c b/arch/x86/kvm/vmx/vmx.c
index bc5e5cf1d4cc8..a6d108bfc7132 100644
--- a/arch/x86/kvm/vmx/vmx.c
+++ b/arch/x86/kvm/vmx/vmx.c
@@ -6801,6 +6801,8 @@ static fastpath_t vmx_vcpu_run(struct kvm_vcpu *vcpu)
if (unlikely((u16)vmx->exit_reason == EXIT_REASON_MCE_DURING_VMENTRY))
kvm_machine_check();

+ trace_kvm_exit(vmx->exit_reason, vcpu, KVM_ISA_VMX);
+
if (unlikely(vmx->exit_reason & VMX_EXIT_REASONS_FAILED_VMENTRY))
return EXIT_FASTPATH_NONE;

@@ -6810,8 +6812,6 @@ static fastpath_t vmx_vcpu_run(struct kvm_vcpu *vcpu)
vmx_recover_nmi_blocking(vmx);
vmx_complete_interrupts(vmx);

- trace_kvm_exit(vmx->exit_reason, vcpu, KVM_ISA_VMX);
-
if (is_guest_mode(vcpu))
return EXIT_FASTPATH_NONE;

--
2.26.0