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_TYPE 0x03 /* Mask for type of mapping */ 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 28#define MS_SYNC 1 /* synchronous memory sync */ 29#define MS_ASYNC 2 /* sync memory asynchronously */ 30#define MS_INVALIDATE 4 /* invalidate the caches */ 31 32#define MCL_CURRENT 1 /* lock all current mappings */ 33#define MCL_FUTURE 2 /* lock all future mappings */ 34#define MCL_ONFAULT 4 /* lock all pages that are faulted in */ 35 36#define MLOCK_ONFAULT 0x01 /* Lock pages in range after they are faulted in, do not prefault */ 37 38#define MADV_NORMAL 0 /* no further special treatment */ 39#define MADV_RANDOM 1 /* expect random page references */ 40#define MADV_SEQUENTIAL 2 /* expect sequential page references */ 41#define MADV_WILLNEED 3 /* will need these pages */ 42#define MADV_DONTNEED 4 /* don't need these pages */ 43#define MADV_SPACEAVAIL 5 /* insure that resources are reserved */ 44#define MADV_VPS_PURGE 6 /* Purge pages from VM page cache */ 45#define MADV_VPS_INHERIT 7 /* Inherit parents page size */ 46 47/* common/generic parameters */ 48#define MADV_FREE 8 /* free pages only if memory pressure */ 49#define MADV_REMOVE 9 /* remove these pages & resources */ 50#define MADV_DONTFORK 10 /* don't inherit across fork */ 51#define MADV_DOFORK 11 /* do inherit across fork */ 52 53#define MADV_MERGEABLE 65 /* KSM may merge identical pages */ 54#define MADV_UNMERGEABLE 66 /* KSM may not merge identical pages */ 55 56#define MADV_HUGEPAGE 67 /* Worth backing with hugepages */ 57#define MADV_NOHUGEPAGE 68 /* Not worth backing with hugepages */ 58 59#define MADV_DONTDUMP 69 /* Explicity exclude from the core dump, 60 overrides the coredump filter bits */ 61#define MADV_DODUMP 70 /* Clear the MADV_NODUMP flag */ 62 63/* compatibility flags */ 64#define MAP_FILE 0 65#define MAP_VARIABLE 0 66 67/* 68 * When MAP_HUGETLB is set bits [26:31] encode the log2 of the huge page size. 69 * This gives us 6 bits, which is enough until someone invents 128 bit address 70 * spaces. 71 * 72 * Assume these are all power of twos. 73 * When 0 use the default page size. 74 */ 75#define MAP_HUGE_SHIFT 26 76#define MAP_HUGE_MASK 0x3f 77 78#endif /* __PARISC_MMAN_H__ */ 79