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| author | Alexey Kardashevskiy <[email protected]> | 2023-08-16 02:21:22 +0000 |
|---|---|---|
| committer | Borislav Petkov (AMD) <[email protected]> | 2023-08-16 08:13:42 +0000 |
| commit | e221804dad4e6fe3a0cf192ba3c42cd2f328bdac (patch) | |
| tree | 4df33e1361e3a024c6e3a99db4d75646a8fb09f5 /drivers/gpu/drm/amd/amdgpu/amdgpu_gem.c | |
| parent | Linux 6.5-rc6 (diff) | |
| download | kernel-e221804dad4e6fe3a0cf192ba3c42cd2f328bdac.tar.gz kernel-e221804dad4e6fe3a0cf192ba3c42cd2f328bdac.zip | |
x86/sev: Do not handle #VC for DR7 read/write
With MSR_AMD64_SEV_DEBUG_SWAP enabled, the guest is not expected to
receive a #VC for reads or writes of DR7.
Update the SNP_FEATURES_PRESENT mask with MSR_AMD64_SNP_DEBUG_SWAP so
an SNP guest doesn't gracefully terminate during SNP feature negotiation
if MSR_AMD64_SEV_DEBUG_SWAP is enabled.
Since a guest is not expected to receive a #VC on DR7 accesses when
MSR_AMD64_SEV_DEBUG_SWAP is enabled, return an error from the #VC
handler in this situation.
Signed-off-by: Alexey Kardashevskiy <[email protected]>
Signed-off-by: Borislav Petkov (AMD) <[email protected]>
Reviewed-by: Carlos Bilbao <[email protected]>
Reviewed-by: Tom Lendacky <[email protected]>
Reviewed-by: Pankaj Gupta <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Diffstat (limited to 'drivers/gpu/drm/amd/amdgpu/amdgpu_gem.c')
0 files changed, 0 insertions, 0 deletions