| #ifndef _ASM_X86_PKEYS_H |
| #define _ASM_X86_PKEYS_H |
| |
| #define arch_max_pkey() (boot_cpu_has(X86_FEATURE_OSPKE) ? 16 : 1) |
| |
| extern int arch_set_user_pkey_access(struct task_struct *tsk, int pkey, |
| unsigned long init_val); |
| |
| /* |
| * Try to dedicate one of the protection keys to be used as an |
| * execute-only protection key. |
| */ |
| #define PKEY_DEDICATED_EXECUTE_ONLY 15 |
| extern int __execute_only_pkey(struct mm_struct *mm); |
| static inline int execute_only_pkey(struct mm_struct *mm) |
| { |
| if (!boot_cpu_has(X86_FEATURE_OSPKE)) |
| return 0; |
| |
| return __execute_only_pkey(mm); |
| } |
| |
| extern int __arch_override_mprotect_pkey(struct vm_area_struct *vma, |
| int prot, int pkey); |
| static inline int arch_override_mprotect_pkey(struct vm_area_struct *vma, |
| int prot, int pkey) |
| { |
| if (!boot_cpu_has(X86_FEATURE_OSPKE)) |
| return 0; |
| |
| return __arch_override_mprotect_pkey(vma, prot, pkey); |
| } |
| |
| #endif /*_ASM_X86_PKEYS_H */ |
