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| author |   Aaron Lewis <aaronlewis@google.com> | 2021-05-10 07:48:33 -0700 |
|---|---|---|
| committer |   Paolo Bonzini <pbonzini@redhat.com> | 2021-06-24 18:00:48 -0400 |
| commit | 19238e75bd8ed8ffe784bf5b37586e77b2093742 (patch) | |
| tree | 13d0d58c59af12f70c7ae7b3f83a4c6a0e755a29 /tools/testing/selftests/kvm/lib/x86_64 | |
| parent | KVM: x86/mmu: Let guest use GBPAGES if supported in hardware and TDP is on (diff) | |
| download | linux-dev-19238e75bd8ed8ffe784bf5b37586e77b2093742.tar.xz linux-dev-19238e75bd8ed8ffe784bf5b37586e77b2093742.zip | |
kvm: x86: Allow userspace to handle emulation errors
Add a fallback mechanism to the in-kernel instruction emulator that
allows userspace the opportunity to process an instruction the emulator
was unable to. When the in-kernel instruction emulator fails to process
an instruction it will either inject a #UD into the guest or exit to
userspace with exit reason KVM_INTERNAL_ERROR. This is because it does
not know how to proceed in an appropriate manner. This feature lets
userspace get involved to see if it can figure out a better path
forward.
Signed-off-by: Aaron Lewis <aaronlewis@google.com>
Reviewed-by: David Edmondson <david.edmondson@oracle.com>
Message-Id: <20210510144834.658457-2-aaronlewis@google.com>
Reviewed-by: Jim Mattson <jmattson@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'tools/testing/selftests/kvm/lib/x86_64')
0 files changed, 0 insertions, 0 deletions