KVM: x86: Don't attempt VMWare emulation on #GP with non-zero error code

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The VMware backdoor hooks #GP faults on IN{S}, OUT{S}, and RDPMC, none
of which generate a non-zero error code for their #GP.  Re-injecting #GP
instead of attempting emulation on a non-zero error code will allow a
future patch to move #GP injection (for emulation failure) into
kvm_emulate_instruction() without having to plumb in the error code.

Reviewed-and-tested-by: Vitaly Kuznetsov <vkuznets@redhat.com>
Reviewed-by: Liran Alon <liran.alon@oracle.com>
Signed-off-by: Sean Christopherson <sean.j.christopherson@intel.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

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Sean Christopherson 2019-08-27 14:40:30 -07:00 • committed by Paolo Bonzini

parent 120c2c4f99

commit a6c6ed1e81

2 changed files with 20 additions and 2 deletions

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10

arch/x86/kvm/svm.c

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12

arch/x86/kvm/vmx/vmx.c

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