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drm/xe: Make page-table updates using the default engine happen in order

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If the default engine m->eng was used, there is no check for idle and
a cpu page-table update may thus happen in parallel with a gpu one.
Don't allow CPU page-table updates with the default engine until
the engine is idle.

Signed-off-by: Thomas Hellström <thomas.hellstrom@linux.intel.com>
Reviewed-by: Matthew Brost <matthew.brost@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230629205134.111849-2-thomas.hellstrom@linux.intel.com
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
This commit is contained in:
Thomas Hellström 2023-06-29 22:51:33 +02:00 committed by Rodrigo Vivi
parent c0ab10ee2e
commit b747411964
1 changed files with 2 additions and 1 deletions
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3
drivers/gpu/drm/xe/xe_migrate.c
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@ -1160,9 +1160,10 @@ xe_migrate_update_pgtables(struct xe_migrate *m,
int err = 0;
bool usm = !eng && xe->info.supports_usm;
bool first_munmap_rebind = vma && vma->first_munmap_rebind;
struct xe_engine *eng_override = !eng ? m->eng : eng;
/* Use the CPU if no in syncs and engine is idle */
if (no_in_syncs(syncs, num_syncs) && (!eng || xe_engine_is_idle(eng))) {
if (no_in_syncs(syncs, num_syncs) && xe_engine_is_idle(eng_override)) {
fence = xe_migrate_update_pgtables_cpu(m, vm, bo, updates,
num_updates,
first_munmap_rebind,