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 */ 32
