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| author | Like Xu <likexu@tencent.com> | 2022-01-25 19:52:23 +0800 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2022-01-26 12:14:58 -0500 |
| commit | 1ffce0924a8c86cf0590c039cd5f5c9375d32e9b (patch) | |
| tree | 2650f7f7266ccc207f34c916bdbb686342941544 /fs/binfmt_flat.c | |
| parent | 35fe7cfbab2e81f1afb23fc4212210b1de6d9633 (diff) | |
KVM: x86/cpuid: Exclude unpermitted xfeatures sizes at KVM_GET_SUPPORTED_CPUID
With the help of xstate_get_guest_group_perm(), KVM can exclude unpermitted
xfeatures in cpuid.0xd.0.eax, in which case the corresponding xfeatures
sizes should also be matched to the permitted xfeatures.
To fix this inconsistency, the permitted_xcr0 and permitted_xss are defined
consistently, which implies 'supported' plus certain permissions for this
task, and it also fixes cpuid.0xd.1.ebx and later leaf-by-leaf queries.
Fixes: 445ecdf79be0 ("kvm: x86: Exclude unpermitted xfeatures at KVM_GET_SUPPORTED_CPUID")
Signed-off-by: Like Xu <likexu@tencent.com>
Message-Id: <20220125115223.33707-1-likexu@tencent.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'fs/binfmt_flat.c')
0 files changed, 0 insertions, 0 deletions