github-mirror/linux
1
0
Fork 0
mirror of https://github.com/torvalds/linux.git synced 2026-05-27 08:33:17 +02:00
Code Issues Actions Packages Projects Releases Wiki Activity Graph

drm/xe: Avoid PM wake reference during VF migration

Browse Source 
Virtual Functions (VFs) do not use runtime PM. Avoid taking PM
references during VF migration, as lockdep may get confused—VF migration
occurs in the reclaim path, and waking a PM reference can trigger memory
allocation warnings.

Signed-off-by: Matthew Brost <matthew.brost@intel.com>
Reviewed-by: Matthew Auld <matthew.auld@intel.com>
Link: https://lore.kernel.org/r/20251022005538.828980-4-matthew.brost@intel.com
This commit is contained in:
Matthew Brost 2025-10-21 17:55:38 -07:00
parent 480b358e7d
commit f6c1345a85
1 changed files with 0 additions and 5 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

5
drivers/gpu/drm/xe/xe_gt_sriov_vf.c
View File

@ -31,7 +31,6 @@
#include "xe_lrc.h"
#include "xe_memirq.h"
#include "xe_mmio.h"
#include "xe_pm.h"
#include "xe_sriov.h"
#include "xe_sriov_vf.h"
#include "xe_sriov_vf_ccs.h"
@ -1218,7 +1217,6 @@ static void vf_post_migration_recovery(struct xe_gt *gt)
xe_gt_sriov_dbg(gt, "migration recovery in progress\n");
xe_pm_runtime_get(xe);
retry = vf_post_migration_shutdown(gt);
if (retry)
goto queue;
@ -1241,12 +1239,10 @@ static void vf_post_migration_recovery(struct xe_gt *gt)
vf_post_migration_kickstart(gt);
xe_pm_runtime_put(xe);
xe_gt_sriov_notice(gt, "migration recovery ended\n");
return;
fail:
vf_post_migration_abort(gt);
xe_pm_runtime_put(xe);
xe_gt_sriov_err(gt, "migration recovery failed (%pe)\n", ERR_PTR(err));
xe_device_declare_wedged(xe);
return;
@ -1254,7 +1250,6 @@ static void vf_post_migration_recovery(struct xe_gt *gt)
queue:
xe_gt_sriov_info(gt, "Re-queuing migration recovery\n");
queue_work(gt->ordered_wq, &gt->sriov.vf.migration.worker);
xe_pm_runtime_put(xe);
}
static void migration_worker_func(struct work_struct *w)