| /* 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__ */ |