1/* 2 * This program is free software; you can redistribute it and/or 3 * modify it under the terms of the GNU General Public License 4 * as published by the Free Software Foundation; either version 5 * 2 of the License, or (at your option) any later version. 6 */ 7#ifndef _ASM_POWERPC_MMAN_H 8#define _ASM_POWERPC_MMAN_H 9 10#include <uapi/asm/mman.h> 11 12#ifdef CONFIG_PPC64 13 14#include <asm/cputable.h> 15#include <linux/mm.h> 16 17/* 18 * This file is included by linux/mman.h, so we can't use cacl_vm_prot_bits() 19 * here. How important is the optimization? 20 */ 21static inline unsigned long arch_calc_vm_prot_bits(unsigned long prot) 22{ 23 return (prot & PROT_SAO) ? VM_SAO : 0; 24} 25#define arch_calc_vm_prot_bits(prot) arch_calc_vm_prot_bits(prot) 26 27static inline pgprot_t arch_vm_get_page_prot(unsigned long vm_flags) 28{ 29 return (vm_flags & VM_SAO) ? __pgprot(_PAGE_SAO) : __pgprot(0); 30} 31#define arch_vm_get_page_prot(vm_flags) arch_vm_get_page_prot(vm_flags) 32 33static inline int arch_validate_prot(unsigned long prot) 34{ 35 if (prot & ~(PROT_READ | PROT_WRITE | PROT_EXEC | PROT_SEM | PROT_SAO)) 36 return 0; 37 if ((prot & PROT_SAO) && !cpu_has_feature(CPU_FTR_SAO)) 38 return 0; 39 return 1; 40} 41#define arch_validate_prot(prot) arch_validate_prot(prot) 42 43#endif /* CONFIG_PPC64 */ 44#endif /* _ASM_POWERPC_MMAN_H */ 45