mman.h

 1/* SPDX-License-Identifier: GPL-2.0 */
 2#ifndef __ASM_MMAN_H__
 3#define __ASM_MMAN_H__
 4
 5#include <linux/fs.h>
 6#include <uapi/asm/mman.h>
 7
 8/* PARISC cannot allow mdwe as it needs writable stacks */
 9static inline bool arch_memory_deny_write_exec_supported(void)
10{
11	return false;
12}
13#define arch_memory_deny_write_exec_supported arch_memory_deny_write_exec_supported
14
15static inline unsigned long arch_calc_vm_flag_bits(struct file *file, unsigned long flags)
16{
17	/*
18	 * The stack on parisc grows upwards, so if userspace requests memory
19	 * for a stack, mark it with VM_GROWSUP so that the stack expansion in
20	 * the fault handler will work.
21	 */
22	if (flags & MAP_STACK)
23		return VM_GROWSUP;
24
25	return 0;
26}
27#define arch_calc_vm_flag_bits(file, flags) arch_calc_vm_flag_bits(file, flags)
28
29#endif /* __ASM_MMAN_H__ */