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| author | Monk Liu <Monk.Liu@amd.com> | 2017-06-06 17:25:13 +0800 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2017-07-14 11:06:10 -0400 |
| commit | 8fdf074f1840eae838bbccbec37d0a1504ee432b (patch) | |
| tree | 7bfca536bc87c4ae0e8ad6129f95bc72dd6bef9a /drivers/gpu/drm/amd/amdgpu/soc15_common.h | |
| parent | bdb8cd10b99d55d35b869fbf5cd6df9420b9bd85 (diff) | |
drm/amdgpu:fix world switch hang
for SR-IOV, we must keep the pipeline-sync in the protection
of COND_EXEC, otherwise the command consumed by CPG is not
consistent when world switch triggerd, e.g.:
world switch hit and the IB frame is skipped so the fence
won't signal, thus CP will jump to the next DMAframe's pipeline-sync
command, and it will make CP hang foever.
after pipelin-sync moved into COND_EXEC the consistency can be
guaranteed
Signed-off-by: Monk Liu <Monk.Liu@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu/drm/amd/amdgpu/soc15_common.h')
0 files changed, 0 insertions, 0 deletions