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drm/amdgpu/vce3: Fix VCE 3 firmware size and offsets

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The VCPU BO contains the actual FW at an offset, but
it was not calculated into the VCPU BO size.
Subtract this from the FW size to make sure there is
no out of bounds access.

This may fix VM faults when using VCE 3.

Cc: John Olender <john.olender@gmail.com>
Fixes: e982262214 ("drm/amdgpu: recalculate VCE firmware BO size")
Signed-off-by: Timur Kristóf <timur.kristof@gmail.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Timur Kristóf 2026-05-13 22:04:16 +02:00 committed by Alex Deucher
parent 1f087bb8cf
commit 15c369257b
1 changed files with 1 additions and 1 deletions
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2
drivers/gpu/drm/amd/amdgpu/vce_v3_0.c
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@ -574,7 +574,7 @@ static void vce_v3_0_mc_resume(struct amdgpu_device *adev, int idx)
} else
WREG32(mmVCE_LMI_VCPU_CACHE_40BIT_BAR, (adev->vce.gpu_addr >> 8));
offset = AMDGPU_VCE_FIRMWARE_OFFSET;
size = VCE_V3_0_FW_SIZE;
size = VCE_V3_0_FW_SIZE - AMDGPU_VCE_FIRMWARE_OFFSET;
WREG32(mmVCE_VCPU_CACHE_OFFSET0, offset & 0x7fffffff);
WREG32(mmVCE_VCPU_CACHE_SIZE0, size);