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b2441318 | 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
66d37570 DH |
2 | #ifndef _LINUX_PKEYS_H |
3 | #define _LINUX_PKEYS_H | |
4 | ||
5 | #include <linux/mm_types.h> | |
6 | #include <asm/mmu_context.h> | |
7 | ||
8 | #ifdef CONFIG_ARCH_HAS_PKEYS | |
9 | #include <asm/pkeys.h> | |
10 | #else /* ! CONFIG_ARCH_HAS_PKEYS */ | |
11 | #define arch_max_pkey() (1) | |
62b5f7d0 DH |
12 | #define execute_only_pkey(mm) (0) |
13 | #define arch_override_mprotect_pkey(vma, prot, pkey) (0) | |
14 | #define PKEY_DEDICATED_EXECUTE_ONLY 0 | |
a8502b67 | 15 | #define ARCH_VM_PKEY_FLAGS 0 |
e8c24d3a DH |
16 | |
17 | static inline bool mm_pkey_is_allocated(struct mm_struct *mm, int pkey) | |
18 | { | |
19 | return (pkey == 0); | |
20 | } | |
21 | ||
22 | static inline int mm_pkey_alloc(struct mm_struct *mm) | |
23 | { | |
24 | return -1; | |
25 | } | |
26 | ||
27 | static inline int mm_pkey_free(struct mm_struct *mm, int pkey) | |
28 | { | |
e8c24d3a DH |
29 | return -EINVAL; |
30 | } | |
31 | ||
32 | static inline int arch_set_user_pkey_access(struct task_struct *tsk, int pkey, | |
33 | unsigned long init_val) | |
34 | { | |
35 | return 0; | |
36 | } | |
37 | ||
acd547b2 DH |
38 | static inline void copy_init_pkru_to_fpregs(void) |
39 | { | |
40 | } | |
41 | ||
66d37570 DH |
42 | #endif /* ! CONFIG_ARCH_HAS_PKEYS */ |
43 | ||
66d37570 | 44 | #endif /* _LINUX_PKEYS_H */ |