Merge drm/drm-next into drm-misc-next

We haven't done any backmerge for a while due to the merge window, and it
starts to become an issue for komeda. Let's bring 5.4-rc1 in.

Signed-off-by: Maxime Ripard <mripard@kernel.org>

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

@@ -444,6 +444,22 @@ static int amdgpu_move_blit(struct ttm_buffer_object *bo,
 	if (r)
 		goto error;
 
+	/* clear the space being freed */
+	if (old_mem->mem_type == TTM_PL_VRAM &&
+	    (ttm_to_amdgpu_bo(bo)->flags &
+	     AMDGPU_GEM_CREATE_VRAM_WIPE_ON_RELEASE)) {
+		struct dma_fence *wipe_fence = NULL;
+
+		r = amdgpu_fill_buffer(ttm_to_amdgpu_bo(bo), AMDGPU_POISON,
+				       NULL, &wipe_fence);
+		if (r) {
+			goto error;
+		} else if (wipe_fence) {
+			dma_fence_put(fence);
+			fence = wipe_fence;
+		}
+	}
+
 	/* Always block for VM page tables before committing the new location */
 	if (bo->type == ttm_bo_type_kernel)
 		r = ttm_bo_move_accel_cleanup(bo, fence, true, new_mem);
@@ -778,7 +794,6 @@ int amdgpu_ttm_tt_get_user_pages(struct amdgpu_bo *bo, struct page **pages)
 	struct hmm_range *range;
 	unsigned long i;
 	uint64_t *pfns;
-	int retry = 0;
 	int r = 0;
 
 	if (!mm) /* Happens during process shutdown */
@@ -819,10 +834,11 @@ int amdgpu_ttm_tt_get_user_pages(struct amdgpu_bo *bo, struct page **pages)
 				0 : range->flags[HMM_PFN_WRITE];
 	range->pfn_flags_mask = 0;
 	range->pfns = pfns;
-	hmm_range_register(range, mirror, start,
-			   start + ttm->num_pages * PAGE_SIZE, PAGE_SHIFT);
+	range->start = start;
+	range->end = start + ttm->num_pages * PAGE_SIZE;
+
+	hmm_range_register(range, mirror);
 
-retry:
 	/*
 	 * Just wait for range to be valid, safe to ignore return value as we
 	 * will use the return value of hmm_range_fault() below under the
@@ -831,24 +847,12 @@ retry:
 	hmm_range_wait_until_valid(range, HMM_RANGE_DEFAULT_TIMEOUT);
 
 	down_read(&mm->mmap_sem);
-
-	r = hmm_range_fault(range, true);
-	if (unlikely(r < 0)) {
-		if (likely(r == -EAGAIN)) {
-			/*
-			 * return -EAGAIN, mmap_sem is dropped
-			 */
-			if (retry++ < MAX_RETRY_HMM_RANGE_FAULT)
-				goto retry;
-			else
-				pr_err("Retry hmm fault too many times\n");
-		}
-
-		goto out_up_read;
-	}
-
+	r = hmm_range_fault(range, 0);
 	up_read(&mm->mmap_sem);
 
+	if (unlikely(r < 0))
+		goto out_free_pfns;
+
 	for (i = 0; i < ttm->num_pages; i++) {
 		pages[i] = hmm_device_entry_to_page(range, pfns[i]);
 		if (unlikely(!pages[i])) {
@@ -864,9 +868,6 @@ retry:
 
 	return 0;
 
-out_up_read:
-	if (likely(r != -EAGAIN))
-		up_read(&mm->mmap_sem);
 out_free_pfns:
 	hmm_range_unregister(range);
 	kvfree(pfns);
@@ -1599,6 +1600,7 @@ static struct ttm_bo_driver amdgpu_bo_driver = {
 	.move = &amdgpu_bo_move,
 	.verify_access = &amdgpu_verify_access,
 	.move_notify = &amdgpu_bo_move_notify,
+	.release_notify = &amdgpu_bo_release_notify,
 	.fault_reserve_notify = &amdgpu_bo_fault_reserve_notify,
 	.io_mem_reserve = &amdgpu_ttm_io_mem_reserve,
 	.io_mem_free = &amdgpu_ttm_io_mem_free,
@@ -1721,6 +1723,7 @@ int amdgpu_ttm_init(struct amdgpu_device *adev)
 	uint64_t gtt_size;
 	int r;
 	u64 vis_vram_limit;
+	void *stolen_vga_buf;
 
 	mutex_init(&adev->mman.gtt_window_lock);
 
@@ -1729,7 +1732,7 @@ int amdgpu_ttm_init(struct amdgpu_device *adev)
 			       &amdgpu_bo_driver,
 			       adev->ddev->anon_inode->i_mapping,
 			       adev->ddev->vma_offset_manager,
-			       adev->need_dma32);
+			       dma_addressing_limited(adev->dev));
 	if (r) {
 		DRM_ERROR("failed initializing buffer object driver(%d).\n", r);
 		return r;
@@ -1776,7 +1779,7 @@ int amdgpu_ttm_init(struct amdgpu_device *adev)
 	r = amdgpu_bo_create_kernel(adev, adev->gmc.stolen_size, PAGE_SIZE,
 				    AMDGPU_GEM_DOMAIN_VRAM,
 				    &adev->stolen_vga_memory,
-				    NULL, NULL);
+				    NULL, &stolen_vga_buf);
 	if (r)
 		return r;
 	DRM_INFO("amdgpu: %uM of VRAM memory ready\n",
@@ -1840,8 +1843,9 @@ int amdgpu_ttm_init(struct amdgpu_device *adev)
  */
 void amdgpu_ttm_late_init(struct amdgpu_device *adev)
 {
+	void *stolen_vga_buf;
 	/* return the VGA stolen memory (if any) back to VRAM */
-	amdgpu_bo_free_kernel(&adev->stolen_vga_memory, NULL, NULL);
+	amdgpu_bo_free_kernel(&adev->stolen_vga_memory, NULL, &stolen_vga_buf);
 }
 
 /**