diff options
| author | Niranjana Vishwanathapura <niranjana.vishwanathapura@intel.com> | 2022-07-01 15:50:48 -0700 |
|---|---|---|
| committer | Andi Shyti <andi.shyti@linux.intel.com> | 2022-07-27 14:01:32 +0000 |
| commit | 6d4a81033fc07aef3ef210eff4f54243479d109c (patch) | |
| tree | 1a882a8d645f8c4fe9a528722fc7bfaec87aebc3 /drivers/gpu/drm/i915/gt/intel_gtt.c | |
| parent | 4d69cd8e3f92fe08b300a1e7868fc1c882b5fc78 (diff) | |
drm/i915/vm_bind: Support private and shared BOs
Add uapi allowing user to specify a BO as private to a specified VM
during the BO creation.
VM private BOs can only be mapped on the specified VM and can't be
dma_buf exported. VM private BOs share a single common dma_resv object,
hence has a performance advantage requiring a single dma_resv object
update in the execbuf path compared to non-private (shared) BOs.
Signed-off-by: Niranjana Vishwanathapura <niranjana.vishwanathapura@intel.com>
Diffstat (limited to 'drivers/gpu/drm/i915/gt/intel_gtt.c')
| -rw-r--r-- | drivers/gpu/drm/i915/gt/intel_gtt.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/gt/intel_gtt.c b/drivers/gpu/drm/i915/gt/intel_gtt.c index 135dc4a76724..df0a8459c3c6 100644 --- a/drivers/gpu/drm/i915/gt/intel_gtt.c +++ b/drivers/gpu/drm/i915/gt/intel_gtt.c @@ -176,6 +176,7 @@ int i915_vm_lock_objects(struct i915_address_space *vm, void i915_address_space_fini(struct i915_address_space *vm) { drm_mm_takedown(&vm->mm); + i915_gem_object_put(vm->root_obj); GEM_BUG_ON(!RB_EMPTY_ROOT(&vm->va.rb_root)); mutex_destroy(&vm->vm_bind_lock); } @@ -289,6 +290,9 @@ void i915_address_space_init(struct i915_address_space *vm, int subclass) INIT_LIST_HEAD(&vm->vm_bind_list); INIT_LIST_HEAD(&vm->vm_bound_list); mutex_init(&vm->vm_bind_lock); + INIT_LIST_HEAD(&vm->non_priv_vm_bind_list); + vm->root_obj = i915_gem_object_create_internal(vm->i915, PAGE_SIZE); + GEM_BUG_ON(IS_ERR(vm->root_obj)); } void *__px_vaddr(struct drm_i915_gem_object *p) |