doc: posix: mark memory protection as supported

Mark _POSIX_MEMORY_PROTECTION as supported (i.e. a
conformant application will link). Zephyr's mm API does not
currently support modifying memory protection bits after
pages have been mapped, so use of this function may result
in undefined behaviour.

Signed-off-by: Chris Friedt <[email protected]>

Author: cfriedt

doc/services/portability/posix/conformance/index.rst

@@ -37,7 +37,7 @@ POSIX System Interfaces
     :ref:`_POSIX_BARRIERS<posix_option_group_barriers>`, 200809L, :kconfig:option:`CONFIG_POSIX_BARRIERS`
     :ref:`_POSIX_CLOCK_SELECTION<posix_option_group_clock_selection>`, 200809L, :kconfig:option:`CONFIG_POSIX_CLOCK_SELECTION`
     :ref:`_POSIX_MAPPED_FILES<posix_option_group_mapped_files>`, 200809L, :kconfig:option:`CONFIG_POSIX_MAPPED_FILES`
-    _POSIX_MEMORY_PROTECTION, -1, :ref:`†<posix_undefined_behaviour>`
+    :ref:`_POSIX_MEMORY_PROTECTION<posix_option_group_memory_protection>`, 200809L, :kconfig:option:`CONFIG_POSIX_MEMORY_PROTECTION` :ref:`†<posix_undefined_behaviour>`
     :ref:`_POSIX_READER_WRITER_LOCKS<posix_option_reader_writer_locks>`, 200809L, :kconfig:option:`CONFIG_POSIX_READER_WRITER_LOCKS`
     :ref:`_POSIX_REALTIME_SIGNALS<posix_option_group_realtime_signals>`, -1, :kconfig:option:`CONFIG_POSIX_REALTIME_SIGNALS`
     :ref:`_POSIX_SEMAPHORES<posix_option_group_semaphores>`, 200809L, :kconfig:option:`CONFIG_POSIX_SEMAPHORES`

doc/services/portability/posix/option_groups/index.rst

@@ -572,6 +572,17 @@ This table lists service support status in Zephyr for `POSIX_FD_MGMT`:
     putc_unlocked(),
     putchar_unlocked(),
 
+.. _posix_option_group_memory_protection:
+
+POSIX_MEMORY_PROTECTION
+=======================
+
+.. csv-table:: POSIX_MEMORY_PROTECTION
+   :header: API, Supported
+   :widths: 50,10
+
+    mprotect(), yes :ref:`†<posix_undefined_behaviour>`
+
 .. _posix_option_group_multi_process:
 
 POSIX_MULTI_PROCESS