tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
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__ */