projects / deliverable / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| 66d37570 DH |
1 | #ifndef _ASM_X86_PKEYS_H |
| 2 | #define _ASM_X86_PKEYS_H | |
| 3 | ||
| 4 | #define arch_max_pkey() (boot_cpu_has(X86_FEATURE_OSPKE) ? 16 : 1) | |
| 5 | ||
| 84594296 DH |
6 | extern int arch_set_user_pkey_access(struct task_struct *tsk, int pkey, |
| 7 | unsigned long init_val); | |
| 8 | ||
| 62b5f7d0 DH |
9 | /* |
| 10 | * Try to dedicate one of the protection keys to be used as an | |
| 11 | * execute-only protection key. | |
| 12 | */ | |
| 13 | #define PKEY_DEDICATED_EXECUTE_ONLY 15 | |
| 14 | extern int __execute_only_pkey(struct mm_struct *mm); | |
| 15 | static inline int execute_only_pkey(struct mm_struct *mm) | |
| 16 | { | |
| 17 | if (!boot_cpu_has(X86_FEATURE_OSPKE)) | |
| 18 | return 0; | |
| 19 | ||
| 20 | return __execute_only_pkey(mm); | |
| 21 | } | |
| 22 | ||
| 23 | extern int __arch_override_mprotect_pkey(struct vm_area_struct *vma, | |
| 24 | int prot, int pkey); | |
| 25 | static inline int arch_override_mprotect_pkey(struct vm_area_struct *vma, | |
| 26 | int prot, int pkey) | |
| 27 | { | |
| 28 | if (!boot_cpu_has(X86_FEATURE_OSPKE)) | |
| 29 | return 0; | |
| 30 | ||
| 31 | return __arch_override_mprotect_pkey(vma, prot, pkey); | |
| 32 | } | |
| 33 | ||
| 66d37570 | 34 | #endif /*_ASM_X86_PKEYS_H */ |