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| author |   Eric Yang <Eric.Yang2@amd.com> | 2021-07-09 12:57:50 -0400 |
|---|---|---|
| committer |   Alex Deucher <alexander.deucher@amd.com> | 2021-07-23 10:07:58 -0400 |
| commit | a4d5df1787cc143b513b9f472ead1ff5eaa550e1 (patch) | |
| tree | 12b8b8eba21ada474cdd94a00f5b2fdbb61a7b08 /drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c | |
| parent | drm/amd/display: Line Buffer changes (diff) | |
| download | linux-dev-a4d5df1787cc143b513b9f472ead1ff5eaa550e1.tar.xz linux-dev-a4d5df1787cc143b513b9f472ead1ff5eaa550e1.zip | |
drm/amd/display: add workaround for riommu invalidation request hang
[Why]
When an riommu invalidation request come at the same time as a pipe is
disabled there can be a case where DCN cannot ACK the request if only
one VMID is setup in the inuse list.
[How]
Setup a second unused VMID will work around the issue.
Reviewed-by: Jun Lei <jun.lei@amd.com>
Acked-by: Rodrigo Siqueira <Rodrigo.Siqueira@amd.com>
Signed-off-by: Eric Yang <Eric.Yang2@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c')
0 files changed, 0 insertions, 0 deletions