diff options
Diffstat (limited to 'drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c')
| -rw-r--r-- | drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c | 36 |
1 files changed, 33 insertions, 3 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c index a07c85815b7a..4f10f5aba00b 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c @@ -2757,6 +2757,37 @@ error_free_sched_entity: } /** + * amdgpu_vm_check_clean_reserved - check if a VM is clean + * + * @adev: amdgpu_device pointer + * @vm: the VM to check + * + * check all entries of the root PD, if any subsequent PDs are allocated, + * it means there are page table creating and filling, and is no a clean + * VM + * + * Returns: + * 0 if this VM is clean + */ +static int amdgpu_vm_check_clean_reserved(struct amdgpu_device *adev, + struct amdgpu_vm *vm) +{ + enum amdgpu_vm_level root = adev->vm_manager.root_level; + unsigned int entries = amdgpu_vm_num_entries(adev, root); + unsigned int i = 0; + + if (!(vm->root.entries)) + return 0; + + for (i = 0; i < entries; i++) { + if (vm->root.entries[i].base.bo) + return -EINVAL; + } + + return 0; +} + +/** * amdgpu_vm_make_compute - Turn a GFX VM into a compute VM * * @adev: amdgpu_device pointer @@ -2786,10 +2817,9 @@ int amdgpu_vm_make_compute(struct amdgpu_device *adev, struct amdgpu_vm *vm, uns return r; /* Sanity checks */ - if (!RB_EMPTY_ROOT(&vm->va.rb_root) || vm->root.entries) { - r = -EINVAL; + r = amdgpu_vm_check_clean_reserved(adev, vm); + if (r) goto unreserve_bo; - } if (pasid) { unsigned long flags; |