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- /*
- * 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.
- */
- #ifndef _ASM_POWERPC_MMAN_H
- #define _ASM_POWERPC_MMAN_H
- #include <uapi/asm/mman.h>
- #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 /* _ASM_POWERPC_MMAN_H */
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