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| author | Sean Christopherson <seanjc@google.com> | 2023-04-05 03:45:16 +0300 |
|---|---|---|
| committer | Sean Christopherson <seanjc@google.com> | 2023-04-11 20:19:03 +0300 |
| commit | 55cd57b596e86140503214eafc8fb62c9c544e8f (patch) | |
| tree | d07ae7f768eaaafed257fc4434a35ab2d77ac67e /tools/perf/scripts/python/exported-sql-viewer.py | |
| parent | 6be3ae45f567cdebb5b9938137bf3445ceacf9fb (diff) | |
| download | linux-55cd57b596e86140503214eafc8fb62c9c544e8f.tar.xz | |
KVM: x86: Filter out XTILE_CFG if XTILE_DATA isn't permitted
Filter out XTILE_CFG from the supported XCR0 reported to userspace if the
current process doesn't have access to XTILE_DATA. Attempting to set
XTILE_CFG in XCR0 will #GP if XTILE_DATA is also not set, and so keeping
XTILE_CFG as supported results in explosions if userspace feeds
KVM_GET_SUPPORTED_CPUID back into KVM and the guest doesn't sanity check
CPUID.
Fixes: 445ecdf79be0 ("kvm: x86: Exclude unpermitted xfeatures at KVM_GET_SUPPORTED_CPUID")
Reported-by: Aaron Lewis <aaronlewis@google.com>
Reviewed-by: Aaron Lewis <aaronlewis@google.com>
Tested-by: Aaron Lewis <aaronlewis@google.com>
Link: https://lore.kernel.org/r/20230405004520.421768-3-seanjc@google.com
Signed-off-by: Sean Christopherson <seanjc@google.com>
Diffstat (limited to 'tools/perf/scripts/python/exported-sql-viewer.py')
0 files changed, 0 insertions, 0 deletions