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drm/xe/guc/tlb: Flush g2h worker in case of tlb timeout

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Flush the g2h worker explicitly if TLB timeout happens which is
observed on LNL and that points to the recent scheduling issue with
E-cores on LNL.

This is similar to the recent fix:
commit e515272338 ("drm/xe/guc/ct: Flush g2h worker in case of g2h
response timeout") and should be removed once there is E core
scheduling fix.

v2: Add platform check(Himal)
v3: Remove gfx platform check as the issue related to cpu
    platform(John)
    Use the common WA macro(John) and print when the flush
    resolves timeout(Matt B)
v4: Remove the resolves log and do the flush before taking
    pending_lock(Matt A)

Cc: Badal Nilawar <badal.nilawar@intel.com>
Cc: Matthew Brost <matthew.brost@intel.com>
Cc: Matthew Auld <matthew.auld@intel.com>
Cc: John Harrison <John.C.Harrison@Intel.com>
Cc: Himal Prasad Ghimiray <himal.prasad.ghimiray@intel.com>
Cc: Lucas De Marchi <lucas.demarchi@intel.com>
Cc: stable@vger.kernel.org # v6.11+
Link: https://gitlab.freedesktop.org/drm/xe/kernel/-/issues/2687
Signed-off-by: Nirmoy Das <nirmoy.das@intel.com>
Reviewed-by: Matthew Auld <matthew.auld@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20241029120117.449694-3-nirmoy.das@intel.com
Signed-off-by: Lucas De Marchi <lucas.demarchi@intel.com>
(cherry picked from commit e1f6fa5566)
Signed-off-by: Lucas De Marchi <lucas.demarchi@intel.com>
This commit is contained in:
Nirmoy Das
2024-10-29 13:01:17 +01:00
committed by Lucas De Marchi
parent 7d1e2580ed
commit 1491efb39a
1 changed files with 2 additions and 0 deletions
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2
drivers/gpu/drm/xe/xe_gt_tlb_invalidation.c
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@@ -72,6 +72,8 @@ static void xe_gt_tlb_fence_timeout(struct work_struct *work)
struct xe_device *xe = gt_to_xe(gt);
struct xe_gt_tlb_invalidation_fence *fence, *next;
LNL_FLUSH_WORK(&gt->uc.guc.ct.g2h_worker);
spin_lock_irq(&gt->tlb_invalidation.pending_lock);
list_for_each_entry_safe(fence, next,
&gt->tlb_invalidation.pending_fences, link) {