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/* SPDX-License-Identifier: GPL-2.0 */
#ifndef __ASM_MMAN_H__
#define __ASM_MMAN_H__
#include <linux/compiler.h>
#include <linux/types.h>
#include <linux/mm.h>
#include <uapi/asm/mman.h>
static inline unsigned long arch_calc_vm_prot_bits(unsigned long prot,
unsigned long pkey __always_unused)
{
unsigned long ret = 0;
/*
* If PROT_WRITE was specified, force it to VM_READ | VM_WRITE.
* Only VM_WRITE means shadow stack.
*/
if (prot & PROT_WRITE)
ret = (VM_READ | VM_WRITE);
return ret;
}
#define arch_calc_vm_prot_bits(prot, pkey) arch_calc_vm_prot_bits(prot, pkey)
#endif /* ! __ASM_MMAN_H__ */
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