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drm/xe: allow non-contig VRAM kernel BO

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If the kernel bo doesn't care about vmap(), either directly or
indirectly with save/restore then we don't need to force contig for such
buffers.

Signed-off-by: Matthew Auld <matthew.auld@intel.com>
Cc: Satyanarayana K V P <satyanarayana.k.v.p@intel.com>
Cc: Thomas Hellström <thomas.hellstrom@linux.intel.com>
Cc: Matthew Brost <matthew.brost@intel.com>
Reviewed-by: Satyanarayana K V P <satyanarayana.k.v.p@intel.com>
Link: https://lore.kernel.org/r/20250403102440.266113-15-matthew.auld@intel.com
This commit is contained in:
Matthew Auld
2025-04-03 11:24:47 +01:00
parent 8e8e9c2663
commit 52a36e7ed6
1 changed files with 8 additions and 1 deletions
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9
drivers/gpu/drm/xe/xe_bo.c
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@@ -191,11 +191,18 @@ static void try_add_system(struct xe_device *xe, struct xe_bo *bo,
static bool force_contiguous(u32 bo_flags)
{
if (bo_flags & XE_BO_FLAG_STOLEN)
return true; /* users expect this */
else if (bo_flags & XE_BO_FLAG_PINNED &&
!(bo_flags & XE_BO_FLAG_PINNED_LATE_RESTORE))
return true; /* needs vmap */
/*
* For eviction / restore on suspend / resume objects pinned in VRAM
* must be contiguous, also only contiguous BOs support xe_bo_vmap.
*/
return bo_flags & (XE_BO_FLAG_PINNED | XE_BO_FLAG_GGTT);
return bo_flags & XE_BO_FLAG_NEEDS_CPU_ACCESS &&
bo_flags & XE_BO_FLAG_PINNED;
}
static void add_vram(struct xe_device *xe, struct xe_bo *bo,