@tab Enable ARMv8.5-A random number instructions.
@item @code{ssbs} @tab ARMv8-A @tab ARMv8.5-A or later
@tab Enable Speculative Store Bypassing Safe state read and write.
+@item @code{memtag} @tab ARMv8.5-A @tab No
+ @tab Enable ARMv8.5-A Memory Tagging Extensions.
@end multitable
@node AArch64 Syntax