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 #endif /* ! CONFIG_ARCH_HAS_PKEYS */
19 * This is called from mprotect_pkey().
21 * Returns true if the protection keys is valid.
23 static inline bool validate_pkey(int pkey)
27 return (pkey < arch_max_pkey());
30 #endif /* _LINUX_PKEYS_H */