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