drm/amdgpu: stop evicting busy PDs/PTs (1bd4e4ca) · Commits · 戴 / test

Otherwise we won't be able to cleanly handle page faults. Signed-off-by:

drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c

+7 −0

Original line number	Diff line number	Diff line
		@@ -1371,6 +1371,13 @@ static bool amdgpu_ttm_bo_eviction_valuable(struct ttm_buffer_object *bo,
		struct dma_fence *f;
		int i;

		/* Don't evict VM page tables while they are busy, otherwise we can't
		* cleanly handle page faults.
		*/
		if (bo->type == ttm_bo_type_kernel &&
		!reservation_object_test_signaled_rcu(bo->resv, true))
		return false;

		/* If bo is a KFD BO, check if the bo belongs to the current process.
		* If true, then return false as any KFD process needs all its BOs to
		* be resident to run successfully