drm/amdgpu: fix VM sync with always valid BOs v2
All users of a VM must always wait for updates with always
valid BOs to be completed.
v2: remove debugging leftovers, rename struct member
Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Roger He <Hongbo.He@amd.com>
Reviewed-by: Felix Kuehling <Felix.Kuehling@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c
index 5f19227..ff61073 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c
@@ -761,10 +761,6 @@ static int amdgpu_bo_vm_update_pte(struct amdgpu_cs_parser *p)
if (r)
return r;
- r = amdgpu_sync_fence(adev, &p->job->sync, vm->last_dir_update);
- if (r)
- return r;
-
r = amdgpu_vm_clear_freed(adev, vm, NULL);
if (r)
return r;
@@ -819,6 +815,12 @@ static int amdgpu_bo_vm_update_pte(struct amdgpu_cs_parser *p)
}
r = amdgpu_vm_handle_moved(adev, vm, &p->job->sync);
+ if (r)
+ return r;
+
+ r = amdgpu_sync_fence(adev, &p->job->sync, vm->last_update);
+ if (r)
+ return r;
if (amdgpu_vm_debug && p->bo_list) {
/* Invalidate all BOs to test for userspace bugs */
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c
index 758bbb9..64baa31 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c
@@ -1141,9 +1141,8 @@ static int amdgpu_vm_update_level(struct amdgpu_device *adev,
goto error_free;
amdgpu_bo_fence(parent->base.bo, fence, true);
- dma_fence_put(vm->last_dir_update);
- vm->last_dir_update = dma_fence_get(fence);
- dma_fence_put(fence);
+ dma_fence_put(vm->last_update);
+ vm->last_update = fence;
}
}
@@ -1804,6 +1803,12 @@ int amdgpu_vm_bo_update(struct amdgpu_device *adev,
trace_amdgpu_vm_bo_mapping(mapping);
}
+ if (bo_va->base.bo &&
+ bo_va->base.bo->tbo.resv == vm->root.base.bo->tbo.resv) {
+ dma_fence_put(vm->last_update);
+ vm->last_update = dma_fence_get(bo_va->last_pt_update);
+ }
+
return 0;
}
@@ -2587,7 +2592,7 @@ int amdgpu_vm_init(struct amdgpu_device *adev, struct amdgpu_vm *vm,
vm->use_cpu_for_update ? "CPU" : "SDMA");
WARN_ONCE((vm->use_cpu_for_update & !amdgpu_vm_is_large_bar(adev)),
"CPU update of VM recommended only for large BAR system\n");
- vm->last_dir_update = NULL;
+ vm->last_update = NULL;
flags = AMDGPU_GEM_CREATE_VRAM_CONTIGUOUS |
AMDGPU_GEM_CREATE_VRAM_CLEARED;
@@ -2693,7 +2698,7 @@ void amdgpu_vm_fini(struct amdgpu_device *adev, struct amdgpu_vm *vm)
}
amdgpu_vm_free_levels(&vm->root);
- dma_fence_put(vm->last_dir_update);
+ dma_fence_put(vm->last_update);
for (i = 0; i < AMDGPU_MAX_VMHUBS; i++)
amdgpu_vm_free_reserved_vmid(adev, vm, i);
}
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.h b/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.h
index c1accd1..cb6a622 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.h
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.h
@@ -140,7 +140,7 @@ struct amdgpu_vm {
/* contains the page directory */
struct amdgpu_vm_pt root;
- struct dma_fence *last_dir_update;
+ struct dma_fence *last_update;
/* protecting freed */
spinlock_t freed_lock;