| /* 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__ */ |
