Am 2023-08-09 um 15:09 schrieb Alex Deucher:
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.
Signed-off-by: Alex Deucher <[email protected]>
Acked-by: Felix Kuehling <[email protected]>
---
drivers/gpu/drm/amd/amdgpu/amdgpu_gem.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_gem.c
b/drivers/gpu/drm/amd/amdgpu/amdgpu_gem.c
index 693b1fd1191a..ca4d2d430e28 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_gem.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_gem.c
@@ -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 |
