Matthew Brost
651065dca3
drm/xe: Increase log level for unhandled page faults
...
Set the kernel log level for unhandled page faults to match the log
level (info) for engine resets. Currently, dmesg output can be confusing
because it shows an engine reset without indicating the page fault that
caused it. Without this change, the GuC log must be examined to
determine the source of the engine reset.
Signed-off-by: Matthew Brost <matthew.brost@intel.com >
Reviewed-by: Rodrigo Vivi <rodrigo.vivi@intel.com >
Reviewed-by: Stuart Summers <stuart.summers@intel.com >
Link: https://patch.msgid.link/20251218223745.4045207-1-matthew.brost@intel.com
2025-12-19 11:45:28 -08:00
Mika Kuoppala
62519b77ae
drm/xe: Fix memory leak when handling pagefault vma
...
When the pagefault handling code was moved to a new file, an extra
drm_exec_init() was added to the VMA path. This call is unnecessary because
xe_validation_ctx_init() already performs a drm_exec_init(), resulting in a
memory leak reported by kmemleak.
Remove the redundant drm_exec_init() from the VMA pagefault handling code.
Fixes: fb544b8445matthew.brost@intel.com >
Cc: Stuart Summers <stuart.summers@intel.com >
Cc: Lucas De Marchi <lucas.demarchi@intel.com >
Cc: "Thomas Hellström" <thomas.hellstrom@linux.intel.com >
Cc: Rodrigo Vivi <rodrigo.vivi@intel.com >
Cc: Sumit Semwal <sumit.semwal@linaro.org >
Cc: "Christian König" <christian.koenig@amd.com >
Cc: intel-xe@lists.freedesktop.org
Cc: linux-media@vger.kernel.org
Cc: dri-devel@lists.freedesktop.org
Cc: linaro-mm-sig@lists.linaro.org
Signed-off-by: Mika Kuoppala <mika.kuoppala@linux.intel.com >
Reviewed-by: Thomas Hellström <thomas.hellstrom@linux.intel.com >
Reviewed-by: Matthew Brost <matthew.brost@intel.com >
Signed-off-by: Matthew Brost <matthew.brost@intel.com >
Link: https://patch.msgid.link/20251120161435.3674556-1-mika.kuoppala@linux.intel.com
2025-11-21 07:18:16 -08:00
Matthew Brost
fb544b8445
drm/xe: Implement xe_pagefault_queue_work
...
Implement a worker that services page faults, using the same
implementation as in xe_gt_pagefault.c.
v2:
- Rebase on exhaustive eviction changes
- Include engine instance in debug prints (Stuart)
Signed-off-by: Matthew Brost <matthew.brost@intel.com >
Reviewed-by: Stuart Summers <stuart.summers@intel.com >
Reviewed-by: Lucas De Marchi <lucas.demarchi@intel.com >
Tested-by: Francois Dugast <francois.dugast@intel.com >
Link: https://patch.msgid.link/20251031165416.2871503-6-matthew.brost@intel.com
2025-11-04 09:04:29 -08:00
Matthew Brost
143aa16572
drm/xe: Implement xe_pagefault_handler
...
Enqueue (copy) the input struct xe_pagefault into a queue (i.e., into a
memory buffer) and schedule a worker to service it.
Signed-off-by: Matthew Brost <matthew.brost@intel.com >
Reviewed-by: Francois Dugast <francois.dugast@intel.com >
Tested-by: Francois Dugast <francois.dugast@intel.com >
Link: https://patch.msgid.link/20251031165416.2871503-5-matthew.brost@intel.com
2025-11-04 09:04:29 -08:00
Matthew Brost
79be336d1a
drm/xe: Implement xe_pagefault_reset
...
Squash any pending faults on the GT being reset by setting the GT field
in struct xe_pagefault to NULL.
v4:
- Only do reset it page faults queues initialized (CI)
Signed-off-by: Matthew Brost <matthew.brost@intel.com >
Reviewed-by: Lucas De Marchi <lucas.demarchi@intel.com >
Tested-by: Francois Dugast <francois.dugast@intel.com >
Link: https://patch.msgid.link/20251031165416.2871503-4-matthew.brost@intel.com
2025-11-04 09:04:29 -08:00
Matthew Brost
1919d1687e
drm/xe: Implement xe_pagefault_init
...
Create pagefault queues and initialize them.
v2:
- Fix kernel doc + add comment for number PF queue (Francois)
v4:
- Move init after GT init (CI, Francois)
Signed-off-by: Matthew Brost <matthew.brost@intel.com >
Reviewed-by: Francois Dugast <francois.dugast@intel.com >
Tested-by: Francois Dugast <francois.dugast@intel.com >
Link: https://patch.msgid.link/20251031165416.2871503-3-matthew.brost@intel.com
2025-11-04 09:04:26 -08:00
Matthew Brost
620a09fb0b
drm/xe: Stub out new pagefault layer
...
Stub out the new page fault layer and add kernel documentation. This is
intended as a replacement for the GT page fault layer, enabling multiple
producers to hook into a shared page fault consumer interface.
v2:
- Fix kernel doc typo (checkpatch)
- Remove comment around GT (Stuart)
- Add explaination around reclaim (Francois)
- Add comment around u8 vs enum (Francois)
- Include engine instance (Stuart)
v3:
- Fix XE_PAGEFAULT_TYPE_ATOMIC_ACCESS_VIOLATION kernel doc (Stuart)
Signed-off-by: Matthew Brost <matthew.brost@intel.com >
Reviewed-by: Lucas De Marchi <lucas.demarchi@intel.com >
Tested-by: Francois Dugast <francois.dugast@intel.com >
Link: https://patch.msgid.link/20251031165416.2871503-2-matthew.brost@intel.com
2025-11-04 09:01:58 -08:00
