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| author | Chao Gao <chao.gao@intel.com> | 2025-09-19 15:32:13 -0700 |
|---|---|---|
| committer | Sean Christopherson <seanjc@google.com> | 2025-09-23 09:00:45 -0700 |
| commit | 338543cbe033e56dcc8c13adcdf6c228953c0829 (patch) | |
| tree | 8a8acf31e98a8038de0aa3bd32a4e4e5745fd1f2 /tools/perf/scripts/python/exported-sql-viewer.py | |
| parent | c0a5f298912222f3bb4e8f5dc67c6a1f0e93d83f (diff) | |
KVM: x86: Check XSS validity against guest CPUIDs
Maintain per-guest valid XSS bits and check XSS validity against them
rather than against KVM capabilities. This is to prevent bits that are
supported by KVM but not supported for a guest from being set.
Opportunistically return KVM_MSR_RET_UNSUPPORTED on IA32_XSS MSR accesses
if guest CPUID doesn't enumerate X86_FEATURE_XSAVES. Since
KVM_MSR_RET_UNSUPPORTED takes care of host_initiated cases, drop the
host_initiated check.
Signed-off-by: Chao Gao <chao.gao@intel.com>
Reviewed-by: Xiaoyao Li <xiaoyao.li@intel.com>
Reviewed-by: Binbin Wu <binbin.wu@linux.intel.com>
Link: https://lore.kernel.org/r/20250919223258.1604852-7-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