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#ifndef _ASM_POWERPC_MMAN_H
#define _ASM_POWERPC_MMAN_H
#include <asm-generic/mman-common.h>
/*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version
* 2 of the License, or (at your option) any later version.
*/
#define PROT_SAO 0x10 /* Strong Access Ordering */
#define MAP_RENAME MAP_ANONYMOUS /* In SunOS terminology */
#define MAP_NORESERVE 0x40 /* don't reserve swap pages */
#define MAP_LOCKED 0x80
#define MAP_GROWSDOWN 0x0100 /* stack-like segment */
#define MAP_DENYWRITE 0x0800 /* ETXTBSY */
#define MAP_EXECUTABLE 0x1000 /* mark it as an executable */
#define MCL_CURRENT 0x2000 /* lock all currently mapped pages */
#define MCL_FUTURE 0x4000 /* lock all additions to address space */
#define MAP_POPULATE 0x8000 /* populate (prefault) pagetables */
#define MAP_NONBLOCK 0x10000 /* do not block on IO */
#define MAP_STACK 0x20000 /* give out an address that is best suited for process/thread stacks */
#define MAP_HUGETLB 0x40000 /* create a huge page mapping */
#ifdef __KERNEL__
#ifdef CONFIG_PPC64
#include <asm/cputable.h>
#include <linux/mm.h>
/*
* This file is included by linux/mman.h, so we can't use cacl_vm_prot_bits()
* here. How important is the optimization?
*/
static inline unsigned long arch_calc_vm_prot_bits(unsigned long prot)
{
return (prot & PROT_SAO) ? VM_SAO : 0;
}
#define arch_calc_vm_prot_bits(prot) arch_calc_vm_prot_bits(prot)
static inline pgprot_t arch_vm_get_page_prot(unsigned long vm_flags)
{
return (vm_flags & VM_SAO) ? __pgprot(_PAGE_SAO) : __pgprot(0);
}
#define arch_vm_get_page_prot(vm_flags) arch_vm_get_page_prot(vm_flags)
static inline int arch_validate_prot(unsigned long prot)
{
if (prot & ~(PROT_READ | PROT_WRITE | PROT_EXEC | PROT_SEM | PROT_SAO))
return 0;
if ((prot & PROT_SAO) && !cpu_has_feature(CPU_FTR_SAO))
return 0;
return 1;
}
#define arch_validate_prot(prot) arch_validate_prot(prot)
#endif /* CONFIG_PPC64 */
#endif /* __KERNEL__ */
#endif /* _ASM_POWERPC_MMAN_H */
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