linux_kernel/arch/s390/include/asm/set_memory.h

#ifndef _ASMS390_SET_MEMORY_H
#define _ASMS390_SET_MEMORY_H

#define SET_MEMORY_RO	1UL
#define SET_MEMORY_RW	2UL
#define SET_MEMORY_NX	4UL
#define SET_MEMORY_X	8UL

int __set_memory(unsigned long addr, int numpages, unsigned long flags);

static inline int set_memory_ro(unsigned long addr, int numpages)
{
	return __set_memory(addr, numpages, SET_MEMORY_RO);
}

static inline int set_memory_rw(unsigned long addr, int numpages)
{
	return __set_memory(addr, numpages, SET_MEMORY_RW);
}

static inline int set_memory_nx(unsigned long addr, int numpages)
{
	return __set_memory(addr, numpages, SET_MEMORY_NX);
}

static inline int set_memory_x(unsigned long addr, int numpages)
{
	return __set_memory(addr, numpages, SET_MEMORY_X);
}

#endif