drm/xe/vram: Add page offline data structures and lifecycle

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Add xe_ttm_vram_offline_resource to track individual offlined VRAM
pages, and extend xe_ttm_vram_mgr with offlined_pages/queued_pages
lists and their counters.

Initialize the lists in __xe_ttm_vram_mgr_init() and add
xe_ttm_vram_free_bad_pages() to release all tracked pages during
xe_ttm_vram_mgr_fini() teardown.

v3(Sashiko):
- Reorder xe_ttm_vram_buddy_free and list_del_rcu
- Introduce reservation status
v2(Himal):
- Address possible leak in xe_ttm_vram_mgr_fini()
- Remove unused dev and add comment for used_visible_size 0

Reviewed-by: Andi Shyti <andi.shyti@linux.intel.com>
Reviewed-by: Himal Prasad Ghimiray <himal.prasad.ghimiray@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/20260903161553.528932-25-tejas.upadhyay@intel.com

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Tejas Upadhyay 2026-09-03 21:46:01 +05:30 • committed by Matthew Brost

parent afc588a890

commit 556774b11e

2 changed files with 63 additions and 0 deletions

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25

drivers/gpu/drm/xe/xe_ttm_vram_mgr.c

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38

drivers/gpu/drm/xe/xe_ttm_vram_mgr_types.h

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