>>>>> Mason Bliss writes:

Mason> (Again, a month-old kernel worked fine, but somewhere in there
Mason> something in our Linux emulation broke.) I still can't run
Mason> Quake II.

Simple fix, see PR kern/6479. With the patch in the PR (appended
below) quake2 works fine for me.

        -- Urban

--- linux_ipccall.c.orig	Sun Nov 22 14:22:45 1998
+++ linux_ipccall.c	Sun Nov 22 14:23:04 1998
@@ -36,6 +36,8 @@
  * POSSIBILITY OF SUCH DAMAGE.
  */
 
+#include "opt_sysv.h"
+
 #include <sys/types.h>
 #include <sys/param.h>
 #include <sys/shm.h>