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drm/amdgpu: fix visible VRAM handling during faults

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When we removed the hacky start code check we actually didn't took into
account that *all* VRAM pages needs to be CPU accessible.

Clean up the code and unify the handling into a single helper which
checks if the whole resource is CPU accessible.

The only place where a partial check would make sense is during
eviction, but that is neglitible.

Signed-off-by: Christian König <christian.koenig@amd.com>
Fixes: aed01a6804 ("drm/amdgpu: Remove TTM resource->start visible VRAM condition v2")
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
CC: stable@vger.kernel.org
This commit is contained in:
Christian König
2024-04-04 16:25:40 +02:00
committed by Alex Deucher
parent 6fef2d4c00
commit a6ff969fe9
5 changed files with 59 additions and 63 deletions
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22
drivers/gpu/drm/amd/amdgpu/amdgpu_object.h
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@@ -250,28 +250,6 @@ static inline u64 amdgpu_bo_mmap_offset(struct amdgpu_bo *bo)
return drm_vma_node_offset_addr(&bo->tbo.base.vma_node);
}
/**
* amdgpu_bo_in_cpu_visible_vram - check if BO is (partly) in visible VRAM
*/
static inline bool amdgpu_bo_in_cpu_visible_vram(struct amdgpu_bo *bo)
{
struct amdgpu_device *adev = amdgpu_ttm_adev(bo->tbo.bdev);
struct amdgpu_res_cursor cursor;
if (!bo->tbo.resource || bo->tbo.resource->mem_type != TTM_PL_VRAM)
return false;
amdgpu_res_first(bo->tbo.resource, 0, amdgpu_bo_size(bo), &cursor);
while (cursor.remaining) {
if (cursor.start < adev->gmc.visible_vram_size)
return true;
amdgpu_res_next(&cursor, cursor.size);
}
return false;
}
/**
* amdgpu_bo_explicit_sync - return whether the bo is explicitly synced
*/