GC_USER_SYS_RB_BACKEND_DISABLE 361 drivers/gpu/drm/amd/amdgpu/sid.h #define GC_USER_SYS_RB_BACKEND_DISABLE 0x3A1 GC_USER_SYS_RB_BACKEND_DISABLE 225 drivers/gpu/drm/radeon/nid.h #define GC_USER_SYS_RB_BACKEND_DISABLE 0x3F8C GC_USER_SYS_RB_BACKEND_DISABLE 359 drivers/gpu/drm/radeon/sid.h #define GC_USER_SYS_RB_BACKEND_DISABLE 0xe84