arch_kexec_pre_free_pages
extern void arch_kexec_pre_free_pages(void *vaddr, unsigned int pages);
#define arch_kexec_pre_free_pages arch_kexec_pre_free_pages
#ifndef arch_kexec_pre_free_pages
arch_kexec_pre_free_pages(page_address(page), count);
arch_kexec_pre_free_pages(page_address(cma), nr_pages);
arch_kexec_pre_free_pages(page_address(page), 1);