@meka @iamleot Try this work around in /usr/src/usr.sbin/bhyve/pci_fbuf.c, around line 71 & recompile bhyve:

-#define FB_SIZE (32*MB)
+#define FB_SIZE (16*MB)

-#define COLS_MAX 3840
-#define ROWS_MAX 2160
+#define COLS_MAX 1920
+#define ROWS_MAX 1200

#define COLS_DEFAULT 1024
#define ROWS_DEFAULT 768

In particular see https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=290098

@a @aartaka
Note: It is t3x.org's s9fes + plan9 specific bits as Nils Holm didn't want to maintain the latter.

I had ported Chibi-scheme to plan9 in 2011 but gave up after a while as it kept breaking. No idea if it is working again on plan9. I had also ported gambit-scheme a long time ago but the same story. It was the most performant of the lot.