drm/xe/tests: Make cross-device dma-buf BOs CPU-visible on small BAR

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Small-BAR systems (e.g., SR-IOV VFs in VMs) expose only a subset of
VRAM via PCI/BAR. Exporting a BO outside that window fails, and the
selftests also do CPU fill/verify.

Set XE_BO_FLAG_NEEDS_CPU_ACCESS for cross-device variants to force
CPU-mappable placement and keep tests reliable. Large-BAR/P2P setups
are unaffected.

Suggested-by: Matthew Auld <matthew.auld@intel.com>
Signed-off-by: Marcin Bernatowicz <marcin.bernatowicz@linux.intel.com>
Cc: Matthew Auld <matthew.auld@intel.com>
Reviewed-by: Matthew Auld <matthew.auld@intel.com>
Link: https://lore.kernel.org/r/20250814145950.430231-1-marcin.bernatowicz@linux.intel.com
Signed-off-by: Michał Winiarski <michal.winiarski@intel.com>

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Marcin Bernatowicz 2025-08-14 16:59:50 +02:00 • committed by Michał Winiarski

parent 81a45cb7ea

commit 12267f831f

1 changed files with 3 additions and 2 deletions

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drivers/gpu/drm/xe/tests/xe_dma_buf.c

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