drm/xe: Skip clearing purged page-table BOs

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VRAM page offlining can clear a page-table BO's vmap before VM teardown
calls xe_pt_clear(). Check for a purged BO under its dma-resv lock before
writing to the mapping.

v4(Sashiko):
- dont leave svm notifier lock early
v3(Sashiko):
- Validate NULL vmap
v2(Sashiko):
- Fix lock ordering

Reviewed-by: Matthew Brost <matthew.brost@intel.com>
Link: https://patch.msgid.link/20260909111620.1276402-2-tejas.upadhyay@intel.com
Signed-off-by: Tejas Upadhyay <tejas.upadhyay@intel.com>

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This commit is contained in:

Tejas Upadhyay 2026-09-09 16:46:21 +05:30

parent 1a925ad518

commit 9fd3b392bd

2 changed files with 8 additions and 2 deletions

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6

drivers/gpu/drm/xe/xe_pt.c

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4

drivers/gpu/drm/xe/xe_vm.c

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