linux/arch/parisc/include/uapi/asm/mman.h
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   1/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
   2#ifndef __PARISC_MMAN_H__
   3#define __PARISC_MMAN_H__
   4
   5#define PROT_READ       0x1             /* page can be read */
   6#define PROT_WRITE      0x2             /* page can be written */
   7#define PROT_EXEC       0x4             /* page can be executed */
   8#define PROT_SEM        0x8             /* page may be used for atomic ops */
   9#define PROT_NONE       0x0             /* page can not be accessed */
  10#define PROT_GROWSDOWN  0x01000000      /* mprotect flag: extend change to start of growsdown vma */
  11#define PROT_GROWSUP    0x02000000      /* mprotect flag: extend change to end of growsup vma */
  12
  13/* 0x01 - 0x03 are defined in linux/mman.h */
  14#define MAP_TYPE        0x2b            /* Mask for type of mapping, includes bits 0x08 and 0x20 */
  15#define MAP_FIXED       0x04            /* Interpret addr exactly */
  16#define MAP_ANONYMOUS   0x10            /* don't use a file */
  17
  18#define MAP_DENYWRITE   0x0800          /* ETXTBSY */
  19#define MAP_EXECUTABLE  0x1000          /* mark it as an executable */
  20#define MAP_LOCKED      0x2000          /* pages are locked */
  21#define MAP_NORESERVE   0x4000          /* don't check for reservations */
  22#define MAP_GROWSDOWN   0x8000          /* stack-like segment */
  23#define MAP_POPULATE    0x10000         /* populate (prefault) pagetables */
  24#define MAP_NONBLOCK    0x20000         /* do not block on IO */
  25#define MAP_STACK       0x40000         /* give out an address that is best suited for process/thread stacks */
  26#define MAP_HUGETLB     0x80000         /* create a huge page mapping */
  27#define MAP_FIXED_NOREPLACE 0x100000    /* MAP_FIXED which doesn't unmap underlying mapping */
  28
  29#define MS_SYNC         1               /* synchronous memory sync */
  30#define MS_ASYNC        2               /* sync memory asynchronously */
  31#define MS_INVALIDATE   4               /* invalidate the caches */
  32
  33#define MCL_CURRENT     1               /* lock all current mappings */
  34#define MCL_FUTURE      2               /* lock all future mappings */
  35#define MCL_ONFAULT     4               /* lock all pages that are faulted in */
  36
  37#define MLOCK_ONFAULT   0x01            /* Lock pages in range after they are faulted in, do not prefault */
  38
  39#define MADV_NORMAL     0               /* no further special treatment */
  40#define MADV_RANDOM     1               /* expect random page references */
  41#define MADV_SEQUENTIAL 2               /* expect sequential page references */
  42#define MADV_WILLNEED   3               /* will need these pages */
  43#define MADV_DONTNEED   4               /* don't need these pages */
  44
  45/* common/generic parameters */
  46#define MADV_FREE       8               /* free pages only if memory pressure */
  47#define MADV_REMOVE     9               /* remove these pages & resources */
  48#define MADV_DONTFORK   10              /* don't inherit across fork */
  49#define MADV_DOFORK     11              /* do inherit across fork */
  50
  51#define MADV_COLD       20              /* deactivate these pages */
  52#define MADV_PAGEOUT    21              /* reclaim these pages */
  53
  54#define MADV_MERGEABLE   65             /* KSM may merge identical pages */
  55#define MADV_UNMERGEABLE 66             /* KSM may not merge identical pages */
  56
  57#define MADV_HUGEPAGE   67              /* Worth backing with hugepages */
  58#define MADV_NOHUGEPAGE 68              /* Not worth backing with hugepages */
  59
  60#define MADV_DONTDUMP   69              /* Explicity exclude from the core dump,
  61                                           overrides the coredump filter bits */
  62#define MADV_DODUMP     70              /* Clear the MADV_NODUMP flag */
  63
  64#define MADV_WIPEONFORK 71              /* Zero memory on fork, child only */
  65#define MADV_KEEPONFORK 72              /* Undo MADV_WIPEONFORK */
  66
  67#define MADV_HWPOISON     100           /* poison a page for testing */
  68#define MADV_SOFT_OFFLINE 101           /* soft offline page for testing */
  69
  70/* compatibility flags */
  71#define MAP_FILE        0
  72#define MAP_VARIABLE    0
  73
  74#define PKEY_DISABLE_ACCESS     0x1
  75#define PKEY_DISABLE_WRITE      0x2
  76#define PKEY_ACCESS_MASK        (PKEY_DISABLE_ACCESS |\
  77                                 PKEY_DISABLE_WRITE)
  78
  79#endif /* __PARISC_MMAN_H__ */
  80