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| author | Jay Cornwall <Jay.Cornwall@amd.com> | 2018-07-11 22:32:46 -0400 |
|---|---|---|
| committer | Oded Gabbay <oded.gabbay@gmail.com> | 2018-07-11 22:32:46 -0400 |
| commit | a60d811b2bf45f2e776e00d71f0dc3c5043245d9 (patch) | |
| tree | a0739b3ed0961b6918f63c873c2e7f725aa9c732 /drivers/gpu/drm/amd/amdgpu/amdgpu_ids.c | |
| parent | 1cd106ecfc1f048db3795cc6aed8acb156ba6d4d (diff) | |
drm/amdkfd: Fix race between scheduler and context restore
The scheduler may raise SQ_WAVE_STATUS.SPI_PRIO via SQ_CMD before
context restore has completed. Restoring SPI_PRIO=0 after this point
may cause context save to fail as the lower priority wavefronts
are not selected for execution among spin-waiting wavefronts.
Leave SPI_PRIO at its SPI-initialized or scheduler-raised value.
v2: Also fix race with exception handler
Signed-off-by: Jay Cornwall <Jay.Cornwall@amd.com>
Reviewed-by: Felix Kuehling <Felix.Kuehling@amd.com>
Signed-off-by: Felix Kuehling <Felix.Kuehling@amd.com>
Acked-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Oded Gabbay <oded.gabbay@gmail.com>
Diffstat (limited to 'drivers/gpu/drm/amd/amdgpu/amdgpu_ids.c')
0 files changed, 0 insertions, 0 deletions