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drm/amdgpu: Fix amdgpu_vm_pt_free warning

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Free page table BO from vm resv unlocked context generate below
warnings.

Add a pt_free_work in vm to free page table BO from vm->pt_freed list.
pass vm resv unlock status from page table update caller, and add vm_bo
entry to vm->pt_freed list and schedule the pt_free_work if calling with
vm resv unlocked.

WARNING: CPU: 12 PID: 3238 at
drivers/gpu/drm/ttm/ttm_bo.c:106 ttm_bo_set_bulk_move+0xa1/0xc0
Call Trace:
 amdgpu_vm_pt_free+0x42/0xd0 [amdgpu]
 amdgpu_vm_pt_free_dfs+0xb3/0xf0 [amdgpu]
 amdgpu_vm_ptes_update+0x52d/0x850 [amdgpu]
 amdgpu_vm_update_range+0x2a6/0x640 [amdgpu]
 svm_range_unmap_from_gpus+0x110/0x300 [amdgpu]
 svm_range_cpu_invalidate_pagetables+0x535/0x600 [amdgpu]
 __mmu_notifier_invalidate_range_start+0x1cd/0x230
 unmap_vmas+0x9d/0x140
 unmap_region+0xa8/0x110

Signed-off-by: Philip Yang <Philip.Yang@amd.com>
Reviewed-by: Felix Kuehling <Felix.Kuehling@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Philip Yang
2022-09-12 11:49:19 -04:00
committed by Alex Deucher
parent c2dbd69e7b
commit 3e43b760c9
3 changed files with 47 additions and 3 deletions
Download Patch File Download Diff File Expand all files Collapse all files

4
drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c
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@@ -2055,6 +2055,8 @@ int amdgpu_vm_init(struct amdgpu_device *adev, struct amdgpu_vm *vm)
spin_lock_init(&vm->status_lock);
INIT_LIST_HEAD(&vm->freed);
INIT_LIST_HEAD(&vm->done);
INIT_LIST_HEAD(&vm->pt_freed);
INIT_WORK(&vm->pt_free_work, amdgpu_vm_pt_free_work);
/* create scheduler entities for page table updates */
r = drm_sched_entity_init(&vm->immediate, DRM_SCHED_PRIORITY_NORMAL,
@@ -2256,6 +2258,8 @@ void amdgpu_vm_fini(struct amdgpu_device *adev, struct amdgpu_vm *vm)
amdgpu_amdkfd_gpuvm_destroy_cb(adev, vm);
flush_work(&vm->pt_free_work);
root = amdgpu_bo_ref(vm->root.bo);
amdgpu_bo_reserve(root, true);
amdgpu_vm_set_pasid(adev, vm, 0);