| /* SPDX-License-Identifier: GPL-2.0-or-later */ | |
| /* | |
| */ | |
| #ifndef _ASM_POWERPC_MMAN_H | |
| #define _ASM_POWERPC_MMAN_H | |
| #include <uapi/asm/mman.h> | |
| #if defined(CONFIG_PPC64) && !defined(BUILD_VDSO) | |
| #include <asm/cputable.h> | |
| #include <linux/mm.h> | |
| #include <linux/pkeys.h> | |
| #include <asm/cpu_has_feature.h> | |
| #include <asm/firmware.h> | |
| static inline vm_flags_t arch_calc_vm_prot_bits(unsigned long prot, | |
| unsigned long pkey) | |
| { | |
| #ifdef CONFIG_PPC_MEM_KEYS | |
| return (((prot & PROT_SAO) ? VM_SAO : 0) | pkey_to_vmflag_bits(pkey)); | |
| #else | |
| return ((prot & PROT_SAO) ? VM_SAO : 0); | |
| #endif | |
| } | |
| #define arch_calc_vm_prot_bits(prot, pkey) arch_calc_vm_prot_bits(prot, pkey) | |
| static inline bool arch_validate_prot(unsigned long prot, unsigned long addr) | |
| { | |
| if (prot & ~(PROT_READ | PROT_WRITE | PROT_EXEC | PROT_SEM | PROT_SAO)) | |
| return false; | |
| if (prot & PROT_SAO) { | |
| if (!cpu_has_feature(CPU_FTR_SAO)) | |
| return false; | |
| if (firmware_has_feature(FW_FEATURE_LPAR) && | |
| !IS_ENABLED(CONFIG_PPC_PROT_SAO_LPAR)) | |
| return false; | |
| } | |
| return true; | |
| } | |
| #define arch_validate_prot arch_validate_prot | |
| #endif /* CONFIG_PPC64 */ | |
| #endif /* _ASM_POWERPC_MMAN_H */ |