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| author | Thomas Hellström <thomas.hellstrom@linux.intel.com> | 2025-12-19 12:33:20 +0100 |
|---|---|---|
| committer | Thomas Hellström <thomas.hellstrom@linux.intel.com> | 2025-12-23 10:00:49 +0100 |
| commit | 0620837490e0401cb4e9965a1e0c462dbff1c97b (patch) | |
| tree | 7d48d67bdc3a5796b4ebc8d86346f735c1a3fde7 /tools/perf/lib/Documentation/tutorial/git@git.tavy.me:linux.git | |
| parent | ec265e1f1cfcce6b03167868cadebf2d831e52b5 (diff) | |
drm/xe/svm: Serialize migration to device if racing
Introduce an rw-semaphore to serialize migration to device if
it's likely that migration races with another device migration
of the same CPU address space range.
This is a temporary fix to attempt to mitigate a livelock that
might happen if many devices try to migrate a range at the same
time, and it affects only devices using the xe driver.
A longer term fix is probably improvements in the core mm
migration layer.
Suggested-by: Matthew Brost <matthew.brost@intel.com>
Signed-off-by: Thomas Hellström <thomas.hellstrom@linux.intel.com>
Reviewed-by: Matthew Brost <matthew.brost@intel.com>
Link: https://patch.msgid.link/20251219113320.183860-25-thomas.hellstrom@linux.intel.com
Diffstat (limited to 'tools/perf/lib/Documentation/tutorial/git@git.tavy.me:linux.git')
0 files changed, 0 insertions, 0 deletions