Revert "drm/xe: Skip exec queue schedule toggle if queue is idle during suspend"

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This reverts commit 8533051ce9.

The idle-skip optimization bypasses GuC suspend, so the GPU may not
perform the context switch that flushes TLB entries for invalidated
userptr VMAs. In LR/preempt-fence VM mode, this can lead to missed TLB
invalidation and page faults during userptr invalidation tests.

Restore unconditional schedule toggling on suspend so the context-switch
TLB flush is always performed.

This optimization will be reintroduced with a fix that does not skip
suspend in LR/preempt-fence VM mode.

Fixes: 8533051ce9 ("drm/xe: Skip exec queue schedule toggle if queue is idle during suspend")
Cc: stable@vger.kernel.org # v7.0+
Suggested-by: Thomas Hellstrom <thomas.hellstrom@linux.intel.com>
Signed-off-by: Tangudu Tilak Tirumalesh <tilak.tirumalesh.tangudu@intel.com>
Reviewed-by: Thomas Hellstrom <thomas.hellstrom@linux.intel.com>
Signed-off-by: Daniele Ceraolo Spurio <daniele.ceraolospurio@intel.com>
Link: https://patch.msgid.link/20260603065217.3131066-2-tilak.tirumalesh.tangudu@intel.com

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Tangudu Tilak Tirumalesh 2026-06-03 12:22:15 +05:30 • committed by Daniele Ceraolo Spurio

parent 94e15e89f4

commit 6a1e7934d9

3 changed files with 5 additions and 77 deletions

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17

drivers/gpu/drm/xe/xe_exec_queue.h

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55

drivers/gpu/drm/xe/xe_guc_submit.c

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10

drivers/gpu/drm/xe/xe_hw_engine_group.c

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