On 2016å¹´08æ??18æ?¥ 16:15, Christian König wrote: > NAK to the whole approach. > > If we want to share dependencies in the form of fences between devices > and especially processes we must use android fences and the sync file > framework. Then if we want to share semaphore between devices and processes, we must re-implement semaphore and move it to kernel side from libdrm, right? then bind unused fd to semaphore object, and then export/import fd. What do you think of it? Regards, David Zhou > > Sharing numbers in the form of the IDR is a security nightmare we > already ran into with the GEM flink design. > > Regards, > Christian. > > Am 18.08.2016 um 09:50 schrieb Chunming Zhou: >> If we want to share semaphore/dependency across process across >> device, we >> must make ctx id be global, so that we can index it everywhere. >> >> Chunming Zhou (6): >> drm/amdgpu: use global ctx mgr instead of vm specified >> drm/amdgpu: clean up for amdgpu ctx >> drm/amdgpu: allocate progressively higher ids for ctx until idr >> counter wraps >> drm/amdgpu: ctx id should be removed when ctx is freed >> drm/amdgpu: use fence-array for ctx release >> drm/amdgpu: dependency is already signaled if ctx has been freed >> >> drivers/gpu/drm/amd/amdgpu/amdgpu.h | 17 ++-- >> drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c | 9 +- >> drivers/gpu/drm/amd/amdgpu/amdgpu_ctx.c | 142 >> ++++++++++++++++++-------------- >> drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c | 3 + >> drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c | 4 - >> 5 files changed, 92 insertions(+), 83 deletions(-) >> >
