doc: add the ARC part for release 2.3
add the ARC processor related part for release 2.3
Signed-off-by: Wayne Ren <wei.ren@synopsys.com>
diff --git a/doc/releases/release-notes-2.3.rst b/doc/releases/release-notes-2.3.rst
index 8ba1a18..29ec40e 100644
--- a/doc/releases/release-notes-2.3.rst
+++ b/doc/releases/release-notes-2.3.rst
@@ -167,7 +167,15 @@
* ARC:
- * <TBD>
+ * Changed to automatic generation of privilege stack for ARC MPU V2 to
+ avoid the potential waste of memory When USERSPACE is configured
+ * Enhanced runtime programming for the MPU v3 by making the gap-filling
+ of kernel memory a user-configurable feature
+ * Refactored the thread switch code in epilogue of irq and exception
+ * Refactored the assembly codes for better maintenance
+ * Fixed the behavior of ARC timer driver
+ * Fixed the behavior of ARC SMP
+ * Fixed the wrong configurations of ARC boards in Kconfig and DTS
* ARM:
