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drm/xe: add XE_BO_FLAG_NEEDS_1G for minimum page-size sizing

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Add XE_BO_FLAG_NEEDS_1G to mark BOs that require 1G minimum page-size
sizing.

Update xe_bo_init_locked() to honor the new flag in the existing
VRAM/stolen-memory minimum page-size sizing path. When
XE_BO_FLAG_NEEDS_1G is set, the BO size is rounded up to 1G. Otherwise,
the existing 2M and 64K sizing behavior is preserved.

If multiple minimum page-size flags are set, the largest requirement
takes precedence: 1G over 2M over 64K.

v3
- commit message reworded

Signed-off-by: Nareshkumar Gollakoti <naresh.kumar.g@intel.com>
Reviewed-by: Himal Prasad Ghimiray <himal.prasad.ghimiray@intel.com>
Link: https://patch.msgid.link/20260729121843.1255891-4-naresh.kumar.g@intel.com
Signed-off-by: Himal Prasad Ghimiray <himal.prasad.ghimiray@intel.com>
This commit is contained in:
Nareshkumar Gollakoti 2026-07-29 17:48:40 +05:30 committed by Himal Prasad Ghimiray
parent ceb4e4f0df
commit caf4fd4eb8
2 changed files with 11 additions and 2 deletions
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12
drivers/gpu/drm/xe/xe_bo.c
View File

@ -2352,8 +2352,16 @@ struct xe_bo *xe_bo_init_locked(struct xe_device *xe, struct xe_bo *bo,
if (flags & (XE_BO_FLAG_VRAM_MASK | XE_BO_FLAG_STOLEN) &&
!(flags & XE_BO_FLAG_IGNORE_MIN_PAGE_SIZE) &&
((xe->info.vram_flags & XE_VRAM_FLAGS_NEED64K) ||
(flags & (XE_BO_FLAG_NEEDS_64K | XE_BO_FLAG_NEEDS_2M)))) {
size_t align = flags & XE_BO_FLAG_NEEDS_2M ? SZ_2M : SZ_64K;
(flags & (XE_BO_FLAG_NEEDS_64K | XE_BO_FLAG_NEEDS_2M |
XE_BO_FLAG_NEEDS_1G)))) {
size_t align;
if (flags & XE_BO_FLAG_NEEDS_1G)
align = SZ_1G;
else if (flags & XE_BO_FLAG_NEEDS_2M)
align = SZ_2M;
else
align = SZ_64K;
aligned_size = ALIGN(size, align);
if (type != ttm_bo_type_device)

1
drivers/gpu/drm/xe/xe_bo.h
View File

@ -52,6 +52,7 @@
#define XE_BO_FLAG_CPU_ADDR_MIRROR BIT(24)
#define XE_BO_FLAG_FORCE_USER_VRAM BIT(25)
#define XE_BO_FLAG_NO_COMPRESSION BIT(26)
#define XE_BO_FLAG_NEEDS_1G BIT(27)
/* this one is trigger internally only */
#define XE_BO_FLAG_INTERNAL_TEST BIT(30)