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| author | Nikunj A Dadhania <[email protected]> | 2025-01-06 12:46:28 +0000 |
|---|---|---|
| committer | Borislav Petkov (AMD) <[email protected]> | 2025-01-07 20:26:20 +0000 |
| commit | eef679a4b52e35be3b4a982a7f42bcc16054ec62 (patch) | |
| tree | 82aae4a35f53c7ba6712c19d8c11cf5e500042cb /drivers/gpu/drm/amd/amdgpu/amdgpu_isp.c | |
| parent | x86/sev: Prevent GUEST_TSC_FREQ MSR interception for Secure TSC enabled guests (diff) | |
| download | kernel-eef679a4b52e35be3b4a982a7f42bcc16054ec62.tar.gz kernel-eef679a4b52e35be3b4a982a7f42bcc16054ec62.zip | |
x86/sev: Prevent RDTSC/RDTSCP interception for Secure TSC enabled guests
The hypervisor should not be intercepting RDTSC/RDTSCP when Secure TSC is
enabled. A #VC exception will be generated if the RDTSC/RDTSCP instructions
are being intercepted. If this should occur and Secure TSC is enabled,
guest execution should be terminated as the guest cannot rely on the TSC
value provided by the hypervisor.
Signed-off-by: Nikunj A Dadhania <[email protected]>
Signed-off-by: Borislav Petkov (AMD) <[email protected]>
Reviewed-by: Tom Lendacky <[email protected]>
Tested-by: Peter Gonda <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Diffstat (limited to 'drivers/gpu/drm/amd/amdgpu/amdgpu_isp.c')
0 files changed, 0 insertions, 0 deletions