#ifndef __ASM_IDMAP_H#define __ASM_IDMAP_H#include<linux/compiler.h>#include<asm/pgtable.h>/* Tag a function as requiring to be executed via an identity mapping. */#define __idmap __section(.idmap.text) noinline notraceexternpgd_t*idmap_pgd;voidsetup_mm_for_reboot(void);#endif /* __ASM_IDMAP_H */