diff options
Diffstat (limited to 'drivers/gpu/drm/amd/amdgpu/amdgpu_gem.c')
| -rw-r--r-- | drivers/gpu/drm/amd/amdgpu/amdgpu_gem.c | 41 |
1 files changed, 37 insertions, 4 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_gem.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_gem.c index 49a5f1c73b..67c234bcf8 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_gem.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_gem.c @@ -187,7 +187,40 @@ static int amdgpu_gem_object_open(struct drm_gem_object *obj, else ++bo_va->ref_count; amdgpu_bo_unreserve(abo); - return 0; + + /* Validate and add eviction fence to DMABuf imports with dynamic + * attachment in compute VMs. Re-validation will be done by + * amdgpu_vm_validate. Fences are on the reservation shared with the + * export, which is currently required to be validated and fenced + * already by amdgpu_amdkfd_gpuvm_restore_process_bos. + * + * Nested locking below for the case that a GEM object is opened in + * kfd_mem_export_dmabuf. Since the lock below is only taken for imports, + * but not for export, this is a different lock class that cannot lead to + * circular lock dependencies. + */ + if (!vm->is_compute_context || !vm->process_info) + return 0; + if (!obj->import_attach || + !dma_buf_is_dynamic(obj->import_attach->dmabuf)) + return 0; + mutex_lock_nested(&vm->process_info->lock, 1); + if (!WARN_ON(!vm->process_info->eviction_fence)) { + r = amdgpu_amdkfd_bo_validate_and_fence(abo, AMDGPU_GEM_DOMAIN_GTT, + &vm->process_info->eviction_fence->base); + if (r) { + struct amdgpu_task_info *ti = amdgpu_vm_get_task_info_vm(vm); + + dev_warn(adev->dev, "validate_and_fence failed: %d\n", r); + if (ti) { + dev_warn(adev->dev, "pid %d\n", ti->pid); + amdgpu_vm_put_task_info(ti); + } + } + } + mutex_unlock(&vm->process_info->lock); + + return r; } static void amdgpu_gem_object_close(struct drm_gem_object *obj, @@ -682,10 +715,10 @@ int amdgpu_gem_va_ioctl(struct drm_device *dev, void *data, uint64_t vm_size; int r = 0; - if (args->va_address < AMDGPU_VA_RESERVED_SIZE) { + if (args->va_address < AMDGPU_VA_RESERVED_BOTTOM) { dev_dbg(dev->dev, "va_address 0x%llx is in reserved area 0x%llx\n", - args->va_address, AMDGPU_VA_RESERVED_SIZE); + args->va_address, AMDGPU_VA_RESERVED_BOTTOM); return -EINVAL; } @@ -701,7 +734,7 @@ int amdgpu_gem_va_ioctl(struct drm_device *dev, void *data, args->va_address &= AMDGPU_GMC_HOLE_MASK; vm_size = adev->vm_manager.max_pfn * AMDGPU_GPU_PAGE_SIZE; - vm_size -= AMDGPU_VA_RESERVED_SIZE; + vm_size -= AMDGPU_VA_RESERVED_TOP; if (args->va_address + args->map_size > vm_size) { dev_dbg(dev->dev, "va_address 0x%llx is in top reserved area 0x%llx\n", |