Re: Migrating from x86 to amd64 Dom0 with x86 DomUs

[Steven Bellovin <smb%cs.columbia.edu@localhost>]

On Mar 13, 2010, at 8:07 AM, Marcin M. Jessa wrote:

> Hi guys.
> 
> I've a Dom0 which runs on Intel x86 without virtualization on NetBSD 5.0 
> STABLE.
> The version of XEN I'm using is 3.1.4
> 
> I want to move my setup to a server with dual AMD Opterons which don't 
> support AMD-V™.
> 
> 
> My questions are:
> 
> - Can I upgrade my XEN 3.1.4?
> - Will I need a PAE kernel for my Dom0 ?
> - Can I run the 32 bit DomUs on a 64 bit Dom0? And if it's possible, what 
> kernels would I need then (PAE, non-PAE)?
> 
I contemplated doing that, but decided to replace my disks as well, so I just 
built a new system elsewhere instead.  I can probably dig up the advice I 
received if you want.

I think, though, that if you switch to an amd64 kernel you'll need an amd64 
userland as well.

                --Steve Bellovin, http://www.cs.columbia.edu/~smb