Unverified Commit 2a407bc3 authored by Shuicheng Lin's avatar Shuicheng Lin Committed by Rodrigo Vivi
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drm/xe: Fix stolen size check to allow equal WOPCM size 

On some platforms without dedicated stolen memory, the calculated
stolen size may be exactly equal to the WOPCM size. The current
assertion incorrectly requires it to be strictly greater, causing
a false failure. Relax the check to allow equality.

Fixes: 65369b8e ("drm/xe: Change return type of detect_bar2_dgfx() from s64 to u64")
Closes: https://gitlab.freedesktop.org/drm/xe/kernel/-/issues/6359


Cc: Matthew Auld <matthew.auld@intel.com>
Cc: Rodrigo Vivi <rodrigo.vivi@intel.com>
Signed-off-by: default avatarShuicheng Lin <shuicheng.lin@intel.com>
Reviewed-by: default avatarMatthew Auld <matthew.auld@intel.com>
Link: https://lore.kernel.org/r/20251016225506.2256127-2-shuicheng.lin@intel.com


Signed-off-by: default avatarRodrigo Vivi <rodrigo.vivi@intel.com>
parent beaae3c0

drivers/gpu/drm/xe/xe_ttm_stolen_mgr.c

+1 −1
Original line number Diff line number Diff line
@@ -106,7 +106,7 @@ static u64 detect_bar2_dgfx(struct xe_device *xe, struct xe_ttm_stolen_mgr *mgr) 


	stolen_size = tile_size - mgr->stolen_base;



	xe_assert(xe, stolen_size > wopcm_size);

	xe_assert(xe, stolen_size >= wopcm_size);

	stolen_size -= wopcm_size;



	/* Verify usage fits in the actual resource available */