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| author | Masha Grinman <Masha.Grinman@amd.com> | 2025-04-03 14:08:17 -0500 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2025-04-11 16:54:02 -0400 |
| commit | 8ef4e996745b56ad6018e4120acf9ab530b72c2f (patch) | |
| tree | 5317d49a6a0758378e49e76a087d6de2da4b1f5a /drivers/gpu/drm/amd/amdgpu/mmhub_v1_8.c | |
| parent | drm/amd: Forbid suspending into non-default suspend states (diff) | |
| download | linux-8ef4e996745b56ad6018e4120acf9ab530b72c2f.tar.gz linux-8ef4e996745b56ad6018e4120acf9ab530b72c2f.zip | |
drm/amdgpu: Move read of snoop register from guest to host
Guest is reading/writing to snoop register which is a security violation
We moved the code to the host driver
And also added a validation on the guest side to check if it's guest
Signed-off-by: Masha Grinman <Masha.Grinman@amd.com>
Reviewed-by: Harish Kasiviswanathan <Harish.Kasiviswanathan@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu/drm/amd/amdgpu/mmhub_v1_8.c')
| -rw-r--r-- | drivers/gpu/drm/amd/amdgpu/mmhub_v1_8.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/mmhub_v1_8.c b/drivers/gpu/drm/amd/amdgpu/mmhub_v1_8.c index 4a43c9ab95a2..76167fadb292 100644 --- a/drivers/gpu/drm/amd/amdgpu/mmhub_v1_8.c +++ b/drivers/gpu/drm/amd/amdgpu/mmhub_v1_8.c @@ -239,6 +239,9 @@ static void mmhub_v1_8_init_snoop_override_regs(struct amdgpu_device *adev) uint32_t distance = regDAGB1_WRCLI_GPU_SNOOP_OVERRIDE - regDAGB0_WRCLI_GPU_SNOOP_OVERRIDE; + if (amdgpu_sriov_vf(adev)) + return; + inst_mask = adev->aid_mask; for_each_inst(i, inst_mask) { for (j = 0; j < 5; j++) { /* DAGB instances */ |