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| author | Arvind Yadav <arvind.yadav@intel.com> | 2026-08-20 12:24:45 +0530 |
|---|---|---|
| committer | Rodrigo Vivi <rodrigo.vivi@intel.com> | 2026-08-27 09:23:07 -0400 |
| commit | 5e977521d21717edb8e91d004434697d6e3f248c (patch) | |
| tree | 7ad60587c63a82ecc435f5cbe14a210742369222 /scripts/const_structs.checkpatch | |
| parent | 369ba0d1efe91cccabe98ae53c53b7425f327edf (diff) | |
| download | linux-5e977521d21717edb8e91d004434697d6e3f248c.tar.gz linux-5e977521d21717edb8e91d004434697d6e3f248c.zip | |
drm/xe: Reject page faults from non-fault-mode scratch VMs
Having scratch enabled does not make a VM capable of handling recoverable
page faults. Allowing scratch VMs through the ASID lookup also admits
dma-fence mode VMs.
If such a VM faults on an already valid VMA, the handler reports success
without fixing the fault, causing the GPU to retry indefinitely.
Only allow fault-mode VMs through the ASID lookup. Fault-mode VMs using
scratch remain supported, while faults from 3D VMs are rejected.
Fixes: ad9843aac91a ("drm/xe/madvise: Implement purgeable buffer object support")
Cc: Matthew Brost <matthew.brost@intel.com>
Cc: Thomas Hellström <thomas.hellstrom@linux.intel.com>
Cc: Himal Prasad Ghimiray <himal.prasad.ghimiray@intel.com>
Suggested-by: Matthew Brost <matthew.brost@intel.com>
Signed-off-by: Arvind Yadav <arvind.yadav@intel.com>
Reviewed-by: Matthew Brost <matthew.brost@intel.com>
Signed-off-by: Matthew Brost <matthew.brost@intel.com>
Link: https://patch.msgid.link/20260820065445.567228-1-arvind.yadav@intel.com
(cherry picked from commit bfb24a06405b652d37831f3fb66b71d33a6605de)
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Diffstat (limited to 'scripts/const_structs.checkpatch')
0 files changed, 0 insertions, 0 deletions