diff options
| author | Jay Cornwall <jay.cornwall@amd.com> | 2026-09-17 18:06:19 -0500 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2026-09-23 14:21:44 -0400 |
| commit | 57ec117d628e232b59c0328a52f63b1f43a1e2d9 (patch) | |
| tree | 827d84d80f5bfcb10245041d0d51e242438eaa06 /tools/perf/scripts/python/event_analyzing_sample.py | |
| parent | fc6275c7fc9d0b9c590d23d01033613aa26b14c0 (diff) | |
| download | linux-57ec117d628e232b59c0328a52f63b1f43a1e2d9.tar.gz linux-57ec117d628e232b59c0328a52f63b1f43a1e2d9.zip | |
drm/amdkfd: Preserve v1 in gfx12.1 trap workaround
If MODE.DST_VGPR_MSB != MODE.SRC0_VGPR_MSB upon trap entry then
v1 would be trashed.
Adjust workaround to prefetch random address 0xFFFFFFFFxxxxxxxx.
This address space is unavailable to userspace on gfx12.1, ensuring
no functional side-effects of prefetch.
Also remove unused WAVE_START exception handler.
Fixes: 0e1e0f87af55 ("drm/amdkfd: gfx12.1 add no-op prefetch on trap entry")
Signed-off-by: Jay Cornwall <jay.cornwall@amd.com>
Reviewed-by: Lancelot Six <lancelot.six@amd.com>
Cc: Joseph Greathouse <joseph.greathouse@amd.com>
Cc: Vladimir Indic <vladimir.indic@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'tools/perf/scripts/python/event_analyzing_sample.py')
0 files changed, 0 insertions, 0 deletions