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drm/amdgpu: lock bo before calling amdgpu_vm_bo_update_shared

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BO's reservation object must be locked before using
amdgpu_vm_bo_update_shared otherwise dma_resv_assert_held will
complain in amdgpu_vm_update_shared.

Signed-off-by: Pierre-Eric Pelloux-Prayer <pierre-eric.pelloux-prayer@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Pierre-Eric Pelloux-Prayer
2025-10-28 14:09:05 +01:00
committed by Alex Deucher
parent c72d41a8f3
commit 36ffc58b8a
1 changed files with 7 additions and 0 deletions
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7
drivers/gpu/drm/amd/amdgpu/amdgpu_dma_buf.c
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@@ -81,13 +81,20 @@ static int amdgpu_dma_buf_attach(struct dma_buf *dmabuf,
struct drm_gem_object *obj = dmabuf->priv;
struct amdgpu_bo *bo = gem_to_amdgpu_bo(obj);
struct amdgpu_device *adev = amdgpu_ttm_adev(bo->tbo.bdev);
int r;
if (!amdgpu_dmabuf_is_xgmi_accessible(attach_adev, bo) &&
pci_p2pdma_distance(adev->pdev, attach->dev, false) < 0)
attach->peer2peer = false;
r = dma_resv_lock(bo->tbo.base.resv, NULL);
if (r)
return r;
amdgpu_vm_bo_update_shared(bo);
dma_resv_unlock(bo->tbo.base.resv);
return 0;
}