-/**
- * Reserve @size bytes of crashkernel memory at any suitable offset.
- *
- * @size: Size of the crashkernel memory to reserve.
- * Returns the base address on success, and -1ULL on failure.
- */
-static
-unsigned long long __init find_and_reserve_crashkernel(unsigned long long size)
-{
- const unsigned long long alignment = 16<<20; /* 16M */
- unsigned long long start = 0LL;
-
- while (1) {
- int ret;
-
- start = find_e820_area(start, ULONG_MAX, size, alignment);
- if (start == -1ULL)
- return start;
-
- /* try to reserve it */
- ret = reserve_bootmem_generic(start, size, BOOTMEM_EXCLUSIVE);
- if (ret >= 0)
- return start;
-
- start += alignment;
- }
-}
-