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1 | /* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */ |
2 | #ifndef _ASM_X86_MMAN_H | |
3 | #define _ASM_X86_MMAN_H | |
4 | ||
5 | #define MAP_32BIT 0x40 /* only give out 32bit addresses */ | |
6 | ||
7 | #ifdef CONFIG_X86_INTEL_MEMORY_PROTECTION_KEYS | |
8 | /* | |
9 | * Take the 4 protection key bits out of the vma->vm_flags | |
10 | * value and turn them in to the bits that we can put in | |
11 | * to a pte. | |
12 | * | |
13 | * Only override these if Protection Keys are available | |
14 | * (which is only on 64-bit). | |
15 | */ | |
16 | #define arch_vm_get_page_prot(vm_flags) __pgprot( \ | |
17 | ((vm_flags) & VM_PKEY_BIT0 ? _PAGE_PKEY_BIT0 : 0) | \ | |
18 | ((vm_flags) & VM_PKEY_BIT1 ? _PAGE_PKEY_BIT1 : 0) | \ | |
19 | ((vm_flags) & VM_PKEY_BIT2 ? _PAGE_PKEY_BIT2 : 0) | \ | |
20 | ((vm_flags) & VM_PKEY_BIT3 ? _PAGE_PKEY_BIT3 : 0)) | |
21 | ||
22 | #define arch_calc_vm_prot_bits(prot, key) ( \ | |
23 | ((key) & 0x1 ? VM_PKEY_BIT0 : 0) | \ | |
24 | ((key) & 0x2 ? VM_PKEY_BIT1 : 0) | \ | |
25 | ((key) & 0x4 ? VM_PKEY_BIT2 : 0) | \ | |
26 | ((key) & 0x8 ? VM_PKEY_BIT3 : 0)) | |
27 | #endif | |
28 | ||
29 | #include <asm-generic/mman.h> | |
30 | ||
31 | #endif /* _ASM_X86_MMAN_H */ |