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The meat in lock_region() is about packing a region range into a single u64. The rest is just a regular reg write plus a as_send_cmd_and_wait() call that can easily be inlined in mmu_hw_do_operation_locked(). v2: - New patch v3: - Don't LOCK is the region has a zero size v4: - Collect R-b Reviewed-by: Steven Price <steven.price@arm.com> Link: https://patch.msgid.link/20251128084841.3804658-3-boris.brezillon@collabora.com Signed-off-by: Boris Brezillon <boris.brezillon@collabora.com>