Re: multiple vcpus in hvm domu?

[Manuel Bouyer <bouyer%antioche.eu.org@localhost>]

On Thu, Apr 24, 2014 at 08:15:27AM -0500, david l goodrich wrote:
> OpenBSD and Windows XP.  An off-list conversation reminded me
> that some OSes require MP-capable kernels.  Switching OpenBSD to
> boot from bsd.mp shows two CPUs in the dmesg before it core
> dumps, which isn't Xen's problem.  Windows XP continues to show
> only one cpu in performance manager, but shows two processors in
> device manager.  I don't know why there's only one processor in
> perf manager, but I seem to be mistaken and xen seems to be doing
> the right thing.

windows (at last up to XP/2003, I didn't test newer versions) detects the
hardware UP/SMP capabilities at install time, and can't be changed after
without a reinstall. So if you installed XP on a UP system, it won't be able
to use more than one CPU after.

-- 
Manuel Bouyer <bouyer%antioche.eu.org@localhost>
     NetBSD: 26 ans d'experience feront toujours la difference
--