drm/amdgpu: limit the GTT manager address space (bb84284e) · Commits · 戴 / test

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

+4 −2

Original line number	Diff line number	Diff line
		@@ -42,6 +42,7 @@ struct amdgpu_gtt_mgr {
		static int amdgpu_gtt_mgr_init(struct ttm_mem_type_manager *man,
		unsigned long p_size)
		{
		struct amdgpu_device *adev = amdgpu_ttm_adev(man->bdev);
		struct amdgpu_gtt_mgr *mgr;
		uint64_t start, size;

		@@ -50,7 +51,7 @@ static int amdgpu_gtt_mgr_init(struct ttm_mem_type_manager *man,
		return -ENOMEM;

		start = AMDGPU_GTT_MAX_TRANSFER_SIZE * AMDGPU_GTT_NUM_TRANSFER_WINDOWS;
		size = p_size - start;
		size = (adev->mc.gart_size >> PAGE_SHIFT) - start;
		drm_mm_init(&mgr->mm, start, size);
		spin_lock_init(&mgr->lock);
		mgr->available = p_size;
		@@ -112,6 +113,7 @@ int amdgpu_gtt_mgr_alloc(struct ttm_mem_type_manager *man,
		const struct ttm_place *place,
		struct ttm_mem_reg *mem)
		{
		struct amdgpu_device *adev = amdgpu_ttm_adev(man->bdev);
		struct amdgpu_gtt_mgr *mgr = man->priv;
		struct drm_mm_node *node = mem->mm_node;
		enum drm_mm_insert_mode mode;
		@@ -129,7 +131,7 @@ int amdgpu_gtt_mgr_alloc(struct ttm_mem_type_manager *man,
		if (place && place->lpfn)
		lpfn = place->lpfn;
		else
		lpfn = man->size;
		lpfn = adev->gart.num_cpu_pages;

		mode = DRM_MM_INSERT_BEST;
		if (place && place->flags & TTM_PL_FLAG_TOPDOWN)