mman.h 1.0 KB

12345678910111213141516171819202122232425262728293031323334
  1. #ifndef _ASM_X86_MMAN_H
  2. #define _ASM_X86_MMAN_H
  3. #define MAP_32BIT 0x40 /* only give out 32bit addresses */
  4. #define MAP_HUGE_2MB (21 << MAP_HUGE_SHIFT)
  5. #define MAP_HUGE_1GB (30 << MAP_HUGE_SHIFT)
  6. #ifdef CONFIG_X86_INTEL_MEMORY_PROTECTION_KEYS
  7. /*
  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
  10. * to a pte.
  11. *
  12. * Only override these if Protection Keys are available
  13. * (which is only on 64-bit).
  14. */
  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))
  20. #define arch_calc_vm_prot_bits(prot, key) ( \
  21. ((key) & 0x1 ? VM_PKEY_BIT0 : 0) | \
  22. ((key) & 0x2 ? VM_PKEY_BIT1 : 0) | \
  23. ((key) & 0x4 ? VM_PKEY_BIT2 : 0) | \
  24. ((key) & 0x8 ? VM_PKEY_BIT3 : 0))
  25. #endif
  26. #include <asm-generic/mman.h>
  27. #endif /* _ASM_X86_MMAN_H */