--- zzzz-none-000/linux-5.4.213/include/linux/memblock.h	2022-09-15 10:04:56.000000000 +0000
+++ alder-5690pro-762/linux-5.4.213/include/linux/memblock.h	2024-08-14 09:02:08.000000000 +0000
@@ -67,6 +67,7 @@
 	unsigned long cnt;
 	unsigned long max;
 	phys_addr_t total_size;
+	phys_addr_t start_base;	/* start of the region */
 	struct memblock_region *regions;
 	char *name;
 };