KVM: VMX: dump VMCS on failed entry
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Message ID 1563554534-46556-1-git-send-email-pbonzini@redhat.com
State New
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Series
  • KVM: VMX: dump VMCS on failed entry
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Commit Message

Paolo Bonzini July 19, 2019, 4:42 p.m. UTC
This is useful for debugging, and is ratelimited nowadays.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
---
 arch/x86/kvm/vmx/vmx.c | 1 +
 1 file changed, 1 insertion(+)

Comments

Liran Alon July 19, 2019, 9:02 p.m. UTC | #1
> On 19 Jul 2019, at 19:42, Paolo Bonzini <pbonzini@redhat.com> wrote:
> 
> This is useful for debugging, and is ratelimited nowadays.
> 
> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

Reviewed-by: Liran Alon <liran.alon@oracle.com>

> ---
> arch/x86/kvm/vmx/vmx.c | 1 +
> 1 file changed, 1 insertion(+)
> 
> diff --git a/arch/x86/kvm/vmx/vmx.c b/arch/x86/kvm/vmx/vmx.c
> index 69536553446d..c7ee5ead1565 100644
> --- a/arch/x86/kvm/vmx/vmx.c
> +++ b/arch/x86/kvm/vmx/vmx.c
> @@ -5829,6 +5829,7 @@ static int vmx_handle_exit(struct kvm_vcpu *vcpu)
> 	}
> 
> 	if (unlikely(vmx->fail)) {
> +		dump_vmcs();
> 		vcpu->run->exit_reason = KVM_EXIT_FAIL_ENTRY;
> 		vcpu->run->fail_entry.hardware_entry_failure_reason
> 			= vmcs_read32(VM_INSTRUCTION_ERROR);
> -- 
> 1.8.3.1
>

Patch
diff mbox series

diff --git a/arch/x86/kvm/vmx/vmx.c b/arch/x86/kvm/vmx/vmx.c
index 69536553446d..c7ee5ead1565 100644
--- a/arch/x86/kvm/vmx/vmx.c
+++ b/arch/x86/kvm/vmx/vmx.c
@@ -5829,6 +5829,7 @@  static int vmx_handle_exit(struct kvm_vcpu *vcpu)
 	}
 
 	if (unlikely(vmx->fail)) {
+		dump_vmcs();
 		vcpu->run->exit_reason = KVM_EXIT_FAIL_ENTRY;
 		vcpu->run->fail_entry.hardware_entry_failure_reason
 			= vmcs_read32(VM_INSTRUCTION_ERROR);