Public bug reported:
[Impact]
When stress s2idle on Lenovo ThinkPad Intel LNL,
sometimes the system encountered error:
xe 0000:00:02.0: [drm] GT0: Engine reset: engine_class=bcs, logical_mask: 0x2,
guc_id=0
xe 0000:00:02.0: [drm] GT0: Timedout job: seqno=220338, lrc_seqno=220338,
guc_id=0, flags=0x13 in no process [-1]
If execute suspend again the system will hang.
[Fix]
To prevent this try to call xe_sched_stop() to forcefully remove
anything on the pending_list that has already signalled, before we
re-submit.
[Test]
Tested on 3 platforms Intel LNL, suspend 90 times OK by:
$ sudo fwts s3 --s3-multiple=90
After it finished, no related error in log and the display OK.
[Where problems could occur]
It make break Intel XE driver.
** Affects: hwe-next
Importance: Undecided
Status: New
** Affects: linux (Ubuntu)
Importance: Undecided
Status: New
** Tags: jira-sutton-1709 jira-sutton-2114 oem-priority
** Tags added: jira-sutton-1709 oem-priority
** Tags added: jira-sutton-2114
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https://bugs.launchpad.net/bugs/2114697
Title:
[SRU] Fix GT0: Engine reset when suspend on Intel LNL
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