projects / deliverable / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| a37c8875 | 1 | #ifndef _ASM_POWERPC_MMAN_H |
| 2 | #define _ASM_POWERPC_MMAN_H | |
| 1da177e4 | 3 | |
| 5f6164f3 MT |
4 | #include <asm-generic/mman.h> |
| 5 | ||
| 1da177e4 LT |
6 | /* |
| 7 | * This program is free software; you can redistribute it and/or | |
| 8 | * modify it under the terms of the GNU General Public License | |
| 9 | * as published by the Free Software Foundation; either version | |
| 10 | * 2 of the License, or (at your option) any later version. | |
| 11 | */ | |
| 12 | ||
| aba46c50 DK |
13 | #define PROT_SAO 0x10 /* Strong Access Ordering */ |
| 14 | ||
| 1da177e4 LT |
15 | #define MAP_RENAME MAP_ANONYMOUS /* In SunOS terminology */ |
| 16 | #define MAP_NORESERVE 0x40 /* don't reserve swap pages */ | |
| 17 | #define MAP_LOCKED 0x80 | |
| 18 | ||
| 19 | #define MAP_GROWSDOWN 0x0100 /* stack-like segment */ | |
| 20 | #define MAP_DENYWRITE 0x0800 /* ETXTBSY */ | |
| 21 | #define MAP_EXECUTABLE 0x1000 /* mark it as an executable */ | |
| 22 | ||
| 1da177e4 LT |
23 | #define MCL_CURRENT 0x2000 /* lock all currently mapped pages */ |
| 24 | #define MCL_FUTURE 0x4000 /* lock all additions to address space */ | |
| 25 | ||
| 26 | #define MAP_POPULATE 0x8000 /* populate (prefault) pagetables */ | |
| 27 | #define MAP_NONBLOCK 0x10000 /* do not block on IO */ | |
| 28 | ||
| b3fcaaa8 | 29 | #ifdef __KERNEL__ |
| ef3d3246 | 30 | #ifdef CONFIG_PPC64 |
| b3fcaaa8 SR |
31 | |
| 32 | #include <asm/cputable.h> | |
| 33 | #include <linux/mm.h> | |
| 34 | ||
| ef3d3246 DK |
35 | /* |
| 36 | * This file is included by linux/mman.h, so we can't use cacl_vm_prot_bits() | |
| 37 | * here. How important is the optimization? | |
| 38 | */ | |
| 39 | static inline unsigned long arch_calc_vm_prot_bits(unsigned long prot) | |
| 40 | { | |
| 41 | return (prot & PROT_SAO) ? VM_SAO : 0; | |
| 42 | } | |
| 43 | #define arch_calc_vm_prot_bits(prot) arch_calc_vm_prot_bits(prot) | |
| 44 | ||
| 45 | static inline pgprot_t arch_vm_get_page_prot(unsigned long vm_flags) | |
| 46 | { | |
| 47 | return (vm_flags & VM_SAO) ? __pgprot(_PAGE_SAO) : 0; | |
| 48 | } | |
| 49 | #define arch_vm_get_page_prot(vm_flags) arch_vm_get_page_prot(vm_flags) | |
| 50 | ||
| 51 | static inline int arch_validate_prot(unsigned long prot) | |
| 52 | { | |
| 53 | if (prot & ~(PROT_READ | PROT_WRITE | PROT_EXEC | PROT_SEM | PROT_SAO)) | |
| 54 | return 0; | |
| 55 | if ((prot & PROT_SAO) && !cpu_has_feature(CPU_FTR_SAO)) | |
| 56 | return 0; | |
| 57 | return 1; | |
| 58 | } | |
| 59 | #define arch_validate_prot(prot) arch_validate_prot(prot) | |
| 60 | ||
| 61 | #endif /* CONFIG_PPC64 */ | |
| b3fcaaa8 | 62 | #endif /* __KERNEL__ */ |
| a37c8875 | 63 | #endif /* _ASM_POWERPC_MMAN_H */ |