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| author | Philip Yang <Philip.Yang@amd.com> | 2022-09-12 11:49:19 -0400 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2022-09-21 15:25:52 -0400 |
| commit | 3e43b760c9e14fc0b7bd553efb01d9ca825cf338 (patch) | |
| tree | bb26a3768f234aa1a9e86f441bf0bcab728cba54 /drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c | |
| parent | c2dbd69e7b3a02b39ebac262c8c6c7f53df584c7 (diff) | |
| download | lwn-3e43b760c9e14fc0b7bd553efb01d9ca825cf338.tar.gz lwn-3e43b760c9e14fc0b7bd553efb01d9ca825cf338.zip | |
drm/amdgpu: Fix amdgpu_vm_pt_free warning
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>
Diffstat (limited to 'drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c')
| -rw-r--r-- | drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c index b2e96682b9bb..83b0c5d86e48 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c @@ -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); |