1 #ifndef _ASM_POWERPC_MMAN_H 2 #define _ASM_POWERPC_MMAN_H 3 4 #include <asm-generic/mman-common.h> 5 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 13 #define PROT_SAO 0x10 /* Strong Access Ordering */ 14 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 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 #define MAP_STACK 0x20000 /* give out an address that is best suited for process/thread stacks */ 29 #define MAP_HUGETLB 0x40000 /* create a huge page mapping */ 30 31 #ifdef __KERNEL__ 32 #ifdef CONFIG_PPC64 33 34 #include <asm/cputable.h> 35 #include <linux/mm.h> 36 37 /* 38 * This file is included by linux/mman.h, so we can't use cacl_vm_prot_bits() 39 * here. How important is the optimization? 40 */ arch_calc_vm_prot_bits(unsigned long prot)41static inline unsigned long arch_calc_vm_prot_bits(unsigned long prot) 42 { 43 return (prot & PROT_SAO) ? VM_SAO : 0; 44 } 45 #define arch_calc_vm_prot_bits(prot) arch_calc_vm_prot_bits(prot) 46 arch_vm_get_page_prot(unsigned long vm_flags)47static inline pgprot_t arch_vm_get_page_prot(unsigned long vm_flags) 48 { 49 return (vm_flags & VM_SAO) ? __pgprot(_PAGE_SAO) : __pgprot(0); 50 } 51 #define arch_vm_get_page_prot(vm_flags) arch_vm_get_page_prot(vm_flags) 52 arch_validate_prot(unsigned long prot)53static inline int arch_validate_prot(unsigned long prot) 54 { 55 if (prot & ~(PROT_READ | PROT_WRITE | PROT_EXEC | PROT_SEM | PROT_SAO)) 56 return 0; 57 if ((prot & PROT_SAO) && !cpu_has_feature(CPU_FTR_SAO)) 58 return 0; 59 return 1; 60 } 61 #define arch_validate_prot(prot) arch_validate_prot(prot) 62 63 #endif /* CONFIG_PPC64 */ 64 #endif /* __KERNEL__ */ 65 #endif /* _ASM_POWERPC_MMAN_H */ 66