Commit 6be2ad4f authored by Alex Deucher's avatar Alex Deucher
Browse files

drm/amdgpu: don't allow userspace to create a doorbell BO 



We need the domains in amdgpu_drm.h for the kernel driver to manage
the pool, but we don't want userspace using it until the code
is ready.  So reject for now.

Acked-by: default avatarFelix Kuehling <Felix.Kuehling@amd.com>
Signed-off-by: default avatarAlex Deucher <alexander.deucher@amd.com>
parent 80e28aaf

drivers/gpu/drm/amd/amdgpu/amdgpu_gem.c

+4 −0
Original line number Diff line number Diff line
@@ -289,6 +289,10 @@ int amdgpu_gem_create_ioctl(struct drm_device *dev, void *data, 
	uint32_t handle, initial_domain;

	int r;



	/* reject DOORBELLs until userspace code to use it is available */

	if (args->in.domains & AMDGPU_GEM_DOMAIN_DOORBELL)

		return -EINVAL;



	/* reject invalid gem flags */

	if (flags & ~(AMDGPU_GEM_CREATE_CPU_ACCESS_REQUIRED |

		      AMDGPU_GEM_CREATE_NO_CPU_ACCESS |