arch/powerpc/include/asm/pgtable-masks.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 #ifndef _ASM_POWERPC_PGTABLE_MASKS_H
   3 #define _ASM_POWERPC_PGTABLE_MASKS_H
   4
   5 #ifndef _PAGE_NA
   6 #define _PAGE_NA        0
   7 #define _PAGE_NAX       _PAGE_EXEC
   8 #define _PAGE_RO        _PAGE_READ
   9 #define _PAGE_ROX       (_PAGE_READ | _PAGE_EXEC)
  10 #define _PAGE_RW        (_PAGE_READ | _PAGE_WRITE)
  11 #define _PAGE_RWX       (_PAGE_READ | _PAGE_WRITE | _PAGE_EXEC)
  12 #endif
  13
  14 /* Permission flags for kernel mappings */
  15 #ifndef _PAGE_KERNEL_RO
  16 #define _PAGE_KERNEL_RO         _PAGE_RO
  17 #define _PAGE_KERNEL_ROX        _PAGE_ROX
  18 #define _PAGE_KERNEL_RW         (_PAGE_RW | _PAGE_DIRTY)
  19 #define _PAGE_KERNEL_RWX        (_PAGE_RWX | _PAGE_DIRTY)
  20 #endif
  21
  22 /* Permission masks used to generate the __P and __S table */
  23 #define PAGE_NONE       __pgprot(_PAGE_BASE | _PAGE_NA)
  24 #define PAGE_EXECONLY_X __pgprot(_PAGE_BASE | _PAGE_NAX)
  25 #define PAGE_SHARED     __pgprot(_PAGE_BASE | _PAGE_RW)
  26 #define PAGE_SHARED_X   __pgprot(_PAGE_BASE | _PAGE_RWX)
  27 #define PAGE_COPY       __pgprot(_PAGE_BASE | _PAGE_RO)
  28 #define PAGE_COPY_X     __pgprot(_PAGE_BASE | _PAGE_ROX)
  29 #define PAGE_READONLY   __pgprot(_PAGE_BASE | _PAGE_RO)
  30 #define PAGE_READONLY_X __pgprot(_PAGE_BASE | _PAGE_ROX)
  31
  32 #endif /* _ASM_POWERPC_PGTABLE_MASKS_H */