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| author | Sean Christopherson <sean.j.christopherson@intel.com> | 2020-03-02 15:56:26 -0800 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2020-03-16 17:58:11 +0100 |
| commit | 7392079c4e740572a5af72a7223ef5e162e442c9 (patch) | |
| tree | 69bdea208fcc16adee95d2e44689a233692b744e /tools/perf/scripts/python/event_analyzing_sample.py | |
| parent | KVM: x86: Make kvm_mpx_supported() an inline function (diff) | |
| download | linux-7392079c4e740572a5af72a7223ef5e162e442c9.tar.gz linux-7392079c4e740572a5af72a7223ef5e162e442c9.zip | |
KVM: x86: Clear output regs for CPUID 0x14 if PT isn't exposed to guest
Clear the output regs for the main CPUID 0x14 leaf (index=0) if Intel PT
isn't exposed to the guest. Leaf 0x14 enumerates Intel PT capabilities
and should return zeroes if PT is not supported. Incorrectly reporting
PT capabilities is essentially a cosmetic error, i.e. doesn't negatively
affect any known userspace/kernel, as the existence of PT itself is
correctly enumerated via CPUID 0x7.
Reviewed-by: Vitaly Kuznetsov <vkuznets@redhat.com>
Signed-off-by: Sean Christopherson <sean.j.christopherson@intel.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'tools/perf/scripts/python/event_analyzing_sample.py')
0 files changed, 0 insertions, 0 deletions