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drm/amd/amdgpu: add check that shadow page directory is GPU-accessible 

Skip amdgpu_gem_va_update_vm when shadow the page directory is swapped out.
Clean up the check for non-shadow BOs as well using the new helper function.

This fixes a crash with the stack trace:

amdgpu_gem_va_update_vm
-> amdgpu_vm_update_page_directory
 -> amdgpu_ttm_bind
  -> amdgpu_gtt_mgr_alloc

Signed-off-by: Nicolai Hähnle <nicolai.haehnle@amd.com>
Reviewed-by: Chunming Zhou <david1.zhou@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Nicolai Hähnle 2016-12-12 12:09:12 +01:00 committed by Alex Deucher
parent b99f31030a
commit d1144b84fc
1 changed files with 8 additions and 3 deletions
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11
drivers/gpu/drm/amd/amdgpu/amdgpu_gem.c
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@ -496,7 +496,6 @@ static void amdgpu_gem_va_update_vm(struct amdgpu_device *adev,
struct amdgpu_bo_list_entry vm_pd;
struct ww_acquire_ctx ticket;
struct list_head list, duplicates;
unsigned domain;
int r;
INIT_LIST_HEAD(&list);
@ -514,12 +513,18 @@ static void amdgpu_gem_va_update_vm(struct amdgpu_device *adev,
goto error_print;
list_for_each_entry(entry, &list, head) {
domain = amdgpu_mem_type_to_domain(entry->bo->mem.mem_type);
struct amdgpu_bo *bo =
container_of(entry->bo, struct amdgpu_bo, tbo);
/* if anything is swapped out don't swap it in here,
just abort and wait for the next CS */
if (domain == AMDGPU_GEM_DOMAIN_CPU)
if (!amdgpu_bo_gpu_accessible(bo))
goto error_unreserve;
if (bo->shadow && !amdgpu_bo_gpu_accessible(bo->shadow))
goto error_unreserve;
}
r = amdgpu_vm_validate_pt_bos(adev, bo_va->vm, amdgpu_gem_va_check,
NULL);
if (r)