diff options
| author | Sean Christopherson <[email protected]> | 2020-03-02 15:56:10 -0800 |
|---|---|---|
| committer | Paolo Bonzini <[email protected]> | 2020-03-16 17:57:59 +0100 |
| commit | 1893c9415ae8cad20da863c41bdf308e56a2dd67 (patch) | |
| tree | 49da1aa11625955a64c76903523d4d16eed1cfb9 /tools/perf/scripts/python/check-perf-trace.py | |
| parent | 3dc4a9cf05e53c358816f733e383ec42c86f3d4c (diff) | |
KVM: x86: Check for CPUID 0xD.N support before validating array size
Now that sub-leaf 1 is handled separately, verify the next sub-leaf is
needed before rejecting KVM_GET_SUPPORTED_CPUID due to an insufficiently
sized userspace array.
Note, although this is technically a bug, it's not visible to userspace
as KVM_GET_SUPPORTED_CPUID is guaranteed to fail on KVM_CPUID_SIGNATURE,
which is hardcoded to be added after leaf 0xD. The real motivation for
the change is to tightly couple the nent/maxnent and do_host_cpuid()
sequences in preparation for future cleanup.
Reviewed-by: Vitaly Kuznetsov <[email protected]>
Signed-off-by: Sean Christopherson <[email protected]>
Signed-off-by: Paolo Bonzini <[email protected]>
Diffstat (limited to 'tools/perf/scripts/python/check-perf-trace.py')
0 files changed, 0 insertions, 0 deletions