Re: Migrating from x86 to amd64 Dom0 with x86 DomUs

[Jean-Yves Migeon <jeanyves.migeon%free.fr@localhost>]

On 03/13/10 14:07, 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?

For i386 => amd64, you will need an amd64 Xen hypervisor and tools:

http://nyftp.netbsd.org/pub/pkgsrc/packages/NetBSD/x86_64/5.0.1_2009Q4/All/xenkernel3-3.1.4nb3.tgz

http://nyftp.netbsd.org/pub/pkgsrc/packages/NetBSD/x86_64/5.0.1_2009Q4/All/xentools3-3.1.4nb4.tgz

> - Will I need a PAE kernel for my Dom0 ?

If you move to amd64, an amd64 dom0 is required.

> - Can I run the 32 bit DomUs on a 64 bit Dom0?

Yes

> And if it's possible,
> what kernels would I need then (PAE, non-PAE)?

PAE domU (XEN3PAE_DOMU). Just replacing the domU kernel by the 
"PAE-ready" one should be fine.

--
Jean-Yves Migeon
jeanyves.migeon%free.fr@localhost