4 #include <linux/mm_types.h>
5 #include <asm/mmu_context.h>
7 #define PKEY_DISABLE_ACCESS 0x1
8 #define PKEY_DISABLE_WRITE 0x2
9 #define PKEY_ACCESS_MASK (PKEY_DISABLE_ACCESS |\
12 #ifdef CONFIG_ARCH_HAS_PKEYS
13 #include <asm/pkeys.h>
14 #else /* ! CONFIG_ARCH_HAS_PKEYS */
15 #define arch_max_pkey() (1)
16 #define execute_only_pkey(mm) (0)
17 #define arch_override_mprotect_pkey(vma, prot, pkey) (0)
18 #define PKEY_DEDICATED_EXECUTE_ONLY 0
19 #endif /* ! CONFIG_ARCH_HAS_PKEYS */
22 * This is called from mprotect_pkey().
24 * Returns true if the protection keys is valid.
26 static inline bool validate_pkey(int pkey
)
30 return (pkey
< arch_max_pkey());
33 #endif /* _LINUX_PKEYS_H */