Intel Vanderpool (VT) on FreeBSD or FreeBSD Xen

Kip Macy kip.macy at
Tue Jul 11 19:25:37 UTC 2006

I asked the person who wrote vtxassist (only SVM supports paged real
mode) - he thinks that it broke when support for big real mode was
added. He did not seem particularly inclined to fix it. It may be that
Xen's VT-x support is considered less interesting to his organization
now that VMware is free (as in beer).


On 7/11/06, Mohacsi Janos <mohacsi at> wrote:
> Dear All,
>         Does anybody succeed to boot FreeBSD on an Intel Vanderpool
> capable machine? My colleague tried it and the result is a BTX halt as can
> be seen on the screenshots on page linked. He successfully run unmodified
> Linux, Windows 2003 under Xen virtual machines, but FreeBSD failed in the
> boot phase.
>         By the way what is the state of Xen port of FreeBSD?
>         I already asked these questions on FreeBSD-stable but no
> answers...
> Thanks,
> Janos Mohacsi
> Network Engineer, Research Associate, Head of Network Planning
> Key 00F9AF98: 8645 1312 D249 471B DBAE  21A2 9F52 0D1F 00F9 AF98
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