| /* SPDX-License-Identifier: GPL-2.0 */ |
| #ifndef _LINUX_PKEYS_H |
| #define _LINUX_PKEYS_H |
| |
| #include <linux/mm_types.h> |
| #include <asm/mmu_context.h> |
| |
| #ifdef CONFIG_ARCH_HAS_PKEYS |
| #include <asm/pkeys.h> |
| #else /* ! CONFIG_ARCH_HAS_PKEYS */ |
| #define arch_max_pkey() (1) |
| #define execute_only_pkey(mm) (0) |
| #define arch_override_mprotect_pkey(vma, prot, pkey) (0) |
| #define PKEY_DEDICATED_EXECUTE_ONLY 0 |
| #define ARCH_VM_PKEY_FLAGS 0 |
| |
| static inline bool mm_pkey_is_allocated(struct mm_struct *mm, int pkey) |
| { |
| return (pkey == 0); |
| } |
| |
| static inline int mm_pkey_alloc(struct mm_struct *mm) |
| { |
| return -1; |
| } |
| |
| static inline int mm_pkey_free(struct mm_struct *mm, int pkey) |
| { |
| return -EINVAL; |
| } |
| |
| static inline int arch_set_user_pkey_access(struct task_struct *tsk, int pkey, |
| unsigned long init_val) |
| { |
| return 0; |
| } |
| |
| static inline void copy_init_pkru_to_fpregs(void) |
| { |
| } |
| |
| #endif /* ! CONFIG_ARCH_HAS_PKEYS */ |
| |
| #endif /* _LINUX_PKEYS_H */ |