KEXEC_CRASH_MEM_ALIGN
crash_base = ALIGN(crash_base, KEXEC_CRASH_MEM_ALIGN);
crash_size = ALIGN(crash_size, KEXEC_CRASH_MEM_ALIGN);
KEXEC_CRASH_MEM_ALIGN,
#ifndef KEXEC_CRASH_MEM_ALIGN
new_size = roundup(new_size, KEXEC_CRASH_MEM_ALIGN);