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

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Date:   Fri,  8 May 2020 16:53:47 -0700
From:   Sean Christopherson <sean.j.christopherson@...el.com>
To:     Paolo Bonzini <pbonzini@...hat.com>
Cc:     Sean Christopherson <sean.j.christopherson@...el.com>,
        Vitaly Kuznetsov <vkuznets@...hat.com>,
        Wanpeng Li <wanpengli@...cent.com>,
        Jim Mattson <jmattson@...gle.com>,
        Joerg Roedel <joro@...tes.org>, kvm@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: [PATCH 1/2] KVM: VMX: Invoke kvm_exit tracepoint on VM-Exit due to failed VM-Enter

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@...el.com>
---
 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