not allow Lisp control of the scheduler. This is found in the
SB-THREAD package.
-This requires x86/x86-64 and Linux kernel 2.6 or systems with NPTL
-backports.
+This requires Linux (2.6+ or systems with NPTL backports) running on the
+x86 or x86-64 architecture, or SunOS (Solaris) on the x86. Support for
+threading on Darwin (Mac OS X) and FreeBSD on the x86 is experimental.
@menu
* Threading basics::