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Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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linux
1/* SPDX-License-Identifier: GPL-2.0 */
2#ifndef __ASM_MMAN_H__
3#define __ASM_MMAN_H__
4
5#include <linux/compiler.h>
6#include <linux/types.h>
7#include <linux/mm.h>
8#include <uapi/asm/mman.h>
9
10static inline unsigned long arch_calc_vm_prot_bits(unsigned long prot,
11 unsigned long pkey __always_unused)
12{
13 unsigned long ret = 0;
14
15 /*
16 * If PROT_WRITE was specified, force it to VM_READ | VM_WRITE.
17 * Only VM_WRITE means shadow stack.
18 */
19 if (prot & PROT_WRITE)
20 ret = (VM_READ | VM_WRITE);
21 return ret;
22}
23
24#define arch_calc_vm_prot_bits(prot, pkey) arch_calc_vm_prot_bits(prot, pkey)
25
26#endif /* ! __ASM_MMAN_H__ */