Index: share/man/man9/atomic.9
===================================================================
--- share/man/man9/atomic.9
+++ share/man/man9/atomic.9
@@ -23,7 +23,7 @@
 .\"
 .\" $FreeBSD$
 .\"
-.Dd December 22, 2017
+.Dd June 1, 2018
 .Dt ATOMIC 9
 .Os
 .Sh NAME
@@ -117,7 +117,7 @@
 In contrast to C11 atomic operations,
 .Fx Ns 's
 atomic operations are performed on ordinary integer types.
-The available types are:
+The types that are available on all architectures are:
 .Pp
 .Bl -tag -offset indent -width short -compact
 .It Li int
@@ -128,8 +128,6 @@
 unsigned integer the size of a pointer
 .It Li 32
 unsigned 32-bit integer
-.It Li 64
-unsigned 64-bit integer
 .El
 .Pp
 For example, the function to atomically add two integers is called
@@ -147,6 +145,12 @@
 unsigned 8-bit integer
 .It Li 16
 unsigned 16-bit integer
+.El
+.Pp
+Certain architectures also provide operations for 64-bit values:
+.Bl -tag -offset indent -width short -compact
+.It Li 64
+unsigned 64-bit integer
 .El
 .Pp
 These types must not be used in machine-independent code.