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