[PATCH] drm/xe: Fix NPD when saving default context

[Lucas De Marchi]

On Wed, May 28, 2025 at 02:51:33PM -0700, Matthew Brost wrote:
>On Wed, May 28, 2025 at 02:42:22PM -0700, Lucas De Marchi wrote:
>> xef is only valid if it's a job from userspace.  For in-kernel jobs it
>> causes a NPD like below:
>>
>>         <4> [] RIP: 0010:xe_sched_job_create+0xbd/0x390 [xe]
>> 	...
>>         <4> [] Call Trace:
>>         <4> []  <TASK>
>>         <4> []  __xe_bb_create_job+0xa2/0x240 [xe]
>>         <4> []  ? find_held_lock+0x31/0x90
>>         <4> []  ? xa_find_after+0x12c/0x250
>>         <4> []  xe_bb_create_job+0x6e/0x380 [xe]
>>         <4> []  ? xa_find_after+0x136/0x250
>>         <4> []  ? __drm_dev_dbg+0x7d/0xb0
>>         <4> []  xe_gt_record_default_lrcs+0x542/0xb00 [xe]
>>
>> Since drm_file starts with 1 for the unique id, just use 0 for the
>> in-kernel jobs.
>>
>> Fixes: 2956554823ce ("drm/sched: Store the drm client_id in drm_sched_fence")
>> Cc: Christian König <christian.koenig at amd.com>
>> Cc: Pierre-Eric Pelloux-Prayer <pierre-eric.pelloux-prayer at amd.com>
>> Cc: Philipp Stanner <phasta at kernel.org>
>> Signed-off-by: Lucas De Marchi <lucas.demarchi at intel.com>
>
>Reviewed-by: Matthew Brost <matthew.brost at intel.com>

thanks, pushed to drm-misc-next.

Lucas De Marchi