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.
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(-)
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