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| author | Sean Christopherson <seanjc@google.com> | 2024-05-18 02:04:27 +0200 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2024-05-23 18:28:45 +0200 |
| commit | bca99c0356524a620126b789edbaf25934415467 (patch) | |
| tree | cc3da88b177b8fd7a9e8bdb91ae362560f9fde62 /arch/x86/kvm/vmx/vmx.c | |
| parent | KVM: VMX: Dump VMCS on unexpected #VE (diff) | |
| download | linux-bca99c0356524a620126b789edbaf25934415467.tar.xz linux-bca99c0356524a620126b789edbaf25934415467.zip | |
KVM: x86/mmu: Print SPTEs on unexpected #VE
Print the SPTEs that correspond to the faulting GPA on an unexpected EPT
Violation #VE to help the user debug failures, e.g. to pinpoint which SPTE
didn't have SUPPRESS_VE set.
Opportunistically assert that the underlying exit reason was indeed an EPT
Violation, as the CPU has *really* gone off the rails if a #VE occurs due
to a completely unexpected exit reason.
Signed-off-by: Sean Christopherson <seanjc@google.com>
Message-ID: <20240518000430.1118488-7-seanjc@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to '')
| -rw-r--r-- | arch/x86/kvm/vmx/vmx.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/arch/x86/kvm/vmx/vmx.c b/arch/x86/kvm/vmx/vmx.c index a02b2720023a..58832aae2248 100644 --- a/arch/x86/kvm/vmx/vmx.c +++ b/arch/x86/kvm/vmx/vmx.c @@ -5218,7 +5218,12 @@ static int handle_exception_nmi(struct kvm_vcpu *vcpu) return handle_ud(vcpu); if (WARN_ON_ONCE(is_ve_fault(intr_info))) { + struct vmx_ve_information *ve_info = vmx->ve_info; + + WARN_ONCE(ve_info->exit_reason != EXIT_REASON_EPT_VIOLATION, + "Unexpected #VE on VM-Exit reason 0x%x", ve_info->exit_reason); dump_vmcs(vcpu); + kvm_mmu_print_sptes(vcpu, ve_info->guest_physical_address, "#VE"); return 1; } |