Re: Does "amd64" refer to the port or the actual hardware?

[Roger Pau Monné <roger.pau%citrix.com@localhost>]

On Tue, Dec 20, 2016 at 04:03:49PM -0500, Greg Troxel wrote:
> 
> Roger Pau Monné <roger.pau%citrix.com@localhost> writes:
> 
> > Let me clarify this a bit, the Xen kernel itself has dropped support for
> > running on non amd64 hardware (ie: it requires something that supports the
> > X86-64 architecture). This doesn't mean that it also requires an amd64 Dom0.
> > You can still use an i386 Dom0 with an amd64 hypervisor, just as you can run
> > i386 PV guests on an amd64 hypervisor.
> >
> > So the real requirement of Xen versions > 4.2 is from a hardware point of view,
> > not from a Dom0 one.
> 
> Thanks for the clarification.  I have fixed up the HOWTO.
> 
> (I did advise that while an amd64 Xen kernel and a NetBSD/i386(PAE) dom0
> should in theory work, we don't have recent confirmation, and that once
> you have hardware than can run amd64, there's probably no reason to do
> that.)

i386 PAE PV guests tend to perform better than amd64 PV guests [0].

Roger.

[0] https://lists.xen.org/archives/html/xen-devel/2012-07/msg00085.html