KVM: x86: On emulation failure, convey the exit reason, etc. to userspace

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Should instruction emulation fail, include the VM exit reason, etc. in
the emulation_failure data passed to userspace, in order that the VMM
can report it as a debugging aid when describing the failure.

Suggested-by: Joao Martins <joao.m.martins@oracle.com>
Signed-off-by: David Edmondson <david.edmondson@oracle.com>
Reviewed-by: Sean Christopherson <seanjc@google.com>
Message-Id: <20210920103737.2696756-4-david.edmondson@oracle.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

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David Edmondson 2021-09-20 11:37:36 +01:00 • committed by Paolo Bonzini

parent 0a62a0319a

commit e615e35589

4 changed files with 69 additions and 18 deletions

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3

arch/x86/include/asm/kvm_host.h

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5

arch/x86/kvm/vmx/vmx.c

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73

arch/x86/kvm/x86.c

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6

include/uapi/linux/kvm.h

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