arch/parisc/include/uapi/asm/mman.h

   1 #ifndef __PARISC_MMAN_H__
   2 #define __PARISC_MMAN_H__
   3
   4 #define PROT_READ       0x1             /* page can be read */
   5 #define PROT_WRITE      0x2             /* page can be written */
   6 #define PROT_EXEC       0x4             /* page can be executed */
   7 #define PROT_SEM        0x8             /* page may be used for atomic ops */
   8 #define PROT_NONE       0x0             /* page can not be accessed */
   9 #define PROT_GROWSDOWN  0x01000000      /* mprotect flag: extend change to start of growsdown vma */
  10 #define PROT_GROWSUP    0x02000000      /* mprotect flag: extend change to end of growsup vma */
  11
  12 #define MAP_SHARED      0x01            /* Share changes */
  13 #define MAP_PRIVATE     0x02            /* Changes are private */
  14 #define MAP_SHARED_VALIDATE 0x03        /* share + validate extension flags */
  15 #define MAP_TYPE        0x03            /* Mask for type of mapping */
  16 #define MAP_FIXED       0x04            /* Interpret addr exactly */
  17 #define MAP_ANONYMOUS   0x10            /* don't use a file */
  18
  19 #define MAP_DENYWRITE   0x0800          /* ETXTBSY */
  20 #define MAP_EXECUTABLE  0x1000          /* mark it as an executable */
  21 #define MAP_LOCKED      0x2000          /* pages are locked */
  22 #define MAP_NORESERVE   0x4000          /* don't check for reservations */
  23 #define MAP_GROWSDOWN   0x8000          /* stack-like segment */
  24 #define MAP_POPULATE    0x10000         /* populate (prefault) pagetables */
  25 #define MAP_NONBLOCK    0x20000         /* do not block on IO */
  26 #define MAP_STACK       0x40000         /* give out an address that is best suited for process/thread stacks */
  27 #define MAP_HUGETLB     0x80000         /* create a huge page 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_MERGEABLE   65             /* KSM may merge identical pages */
  52 #define MADV_UNMERGEABLE 66             /* KSM may not merge identical pages */
  53
  54 #define MADV_HUGEPAGE   67              /* Worth backing with hugepages */
  55 #define MADV_NOHUGEPAGE 68              /* Not worth backing with hugepages */
  56
  57 #define MADV_DONTDUMP   69              /* Explicity exclude from the core dump,
  58                                            overrides the coredump filter bits */
  59 #define MADV_DODUMP     70              /* Clear the MADV_NODUMP flag */
  60
  61 #define MADV_WIPEONFORK 71              /* Zero memory on fork, child only */
  62 #define MADV_KEEPONFORK 72              /* Undo MADV_WIPEONFORK */
  63
  64 #define MADV_HWPOISON     100           /* poison a page for testing */
  65 #define MADV_SOFT_OFFLINE 101           /* soft offline page for testing */
  66
  67 /* compatibility flags */
  68 #define MAP_FILE        0
  69 #define MAP_VARIABLE    0
  70
  71 #define PKEY_DISABLE_ACCESS     0x1
  72 #define PKEY_DISABLE_WRITE      0x2
  73 #define PKEY_ACCESS_MASK        (PKEY_DISABLE_ACCESS |\
  74                                  PKEY_DISABLE_WRITE)
  75
  76 #endif /* __PARISC_MMAN_H__ */