drm/xe: Handle NULL resource and allow purging of VRAM pages

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Add NULL checks for the buffer object's resource pointer in
xe_bo_is_vram() and xe_bo_is_stolen() to prevent potential NULL
pointer dereferences when checking memory location during page
offlining.

Additionally, remove the `!ttm_bo->ttm` check from
xe_ttm_bo_purge(). This restriction is stripped away to
explicitly allow the driver to purge VRAM pages during the
memory page offline sequence.

v2(Sashiko):
- Split export and this patch also Check NULL res in
  xe_bo_is_vram() and xe_bo_is_stolen()

Reviewed-by: Himal Prasad Ghimiray <himal.prasad.ghimiray@intel.com>
Cc: Andi Shyti <andi.shyti@linux.intel.com>
Signed-off-by: Tejas Upadhyay <tejas.upadhyay@intel.com>
Signed-off-by: Matthew Brost <matthew.brost@intel.com>
Link: https://patch.msgid.link/20260903161553.528932-21-tejas.upadhyay@intel.com

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Tejas Upadhyay 2026-09-03 21:45:57 +05:30 • committed by Matthew Brost

parent 1faafb979f

commit 529f45af3e

1 changed files with 6 additions and 6 deletions

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drivers/gpu/drm/xe/xe_bo.c

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