1 /* SPDX-License-Identifier: GPL-2.0-or-later */
4 #ifndef _ASM_POWERPC_MMAN_H
5 #define _ASM_POWERPC_MMAN_H
7 #include <uapi/asm/mman.h>
11 #include <asm/cputable.h>
13 #include <linux/pkeys.h>
14 #include <asm/cpu_has_feature.h>
16 static inline unsigned long arch_calc_vm_prot_bits(unsigned long prot,
19 #ifdef CONFIG_PPC_MEM_KEYS
20 return (((prot & PROT_SAO) ? VM_SAO : 0) | pkey_to_vmflag_bits(pkey));
22 return ((prot & PROT_SAO) ? VM_SAO : 0);
25 #define arch_calc_vm_prot_bits(prot, pkey) arch_calc_vm_prot_bits(prot, pkey)
27 static inline pgprot_t arch_vm_get_page_prot(unsigned long vm_flags)
29 #ifdef CONFIG_PPC_MEM_KEYS
30 return (vm_flags & VM_SAO) ?
31 __pgprot(_PAGE_SAO | vmflag_to_pte_pkey_bits(vm_flags)) :
32 __pgprot(0 | vmflag_to_pte_pkey_bits(vm_flags));
34 return (vm_flags & VM_SAO) ? __pgprot(_PAGE_SAO) : __pgprot(0);
37 #define arch_vm_get_page_prot(vm_flags) arch_vm_get_page_prot(vm_flags)
39 static inline bool arch_validate_prot(unsigned long prot, unsigned long addr)
41 if (prot & ~(PROT_READ | PROT_WRITE | PROT_EXEC | PROT_SEM | PROT_SAO))
43 if ((prot & PROT_SAO) && !cpu_has_feature(CPU_FTR_SAO))
47 #define arch_validate_prot arch_validate_prot
49 #endif /* CONFIG_PPC64 */
50 #endif /* _ASM_POWERPC_MMAN_H */