drm/panthor: Extend VM locked region for remap case to be a superset

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In the event of an sm_step_remap() that leads to a partial unmap of a
transparent huge page, the new locked region required by an extended unmap
might not be a superset of the original one. Then, if it leaves a portion
of the initially requested one out, the ensuing map will trigger a warning.

Fixes: 8e7460eac7 ("drm/panthor: Support partial unmaps of huge pages")
Reviewed-by: Boris Brezillon <boris.brezillon@collabora.com>
Reviewed-by: Steven Price <steven.price@arm.com>
Reviewed-by: Liviu Dudau <liviu.dudau@arm.com>
Link: https://patch.msgid.link/20260408191228.537625-1-adrian.larumbe@collabora.com
Signed-off-by: Adrián Larumbe <adrian.larumbe@collabora.com>

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Adrián Larumbe 2026-04-08 20:12:23 +01:00

parent 2d76319c4c

commit 8867262d99

1 changed files with 19 additions and 0 deletions

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drivers/gpu/drm/panthor/panthor_mmu.c

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