Lines Matching +full:non +full:- +full:safety
33 .Nd provide fast user-managed key-based access control for pages
57 to control access to user-mode addresses.
58 The mechanism gives safety measures which can be used to avoid
62 are user-controllable.
65 has an associated 4-bit protection key.
66 A new per-thread PKRU hardware register determines, for each protection
67 key, whether user-mode addresses with that protection key may be
82 Protection keys require that the system uses 4-level paging
85 Both 64-bit and 32-bit applications can use protection keys.
92 Per-key permissions are managed using the user-mode instructions
115 .Bl -tag -width
129 They are re-established when the current mapping is destroyed
130 and a new mapping is created in any sub-range of the specified range.
160 The non-zero value of the variable pointed to by the
169 .Rv -std
171 .Bl -tag -width Er
183 The supplied address range does not completely fit into the user-managed
202 functions are non-standard and first appeared in