RE: [Xen-users] What CPU with VT or PACIFICA for Xen?

["Petersson, Mats" <Mats.Petersson@xxxxxxx>]

> -----Original Message-----
> From: xen-users-bounces@xxxxxxxxxxxxxxxxxxx 
> [mailto:xen-users-bounces@xxxxxxxxxxxxxxxxxxx] On Behalf Of 
> Gerhard Wendebourg
> Sent: 15 February 2007 15:53
> Cc: xen-users@xxxxxxxxxxxxxxxxxxx
> Subject: Re: [Xen-users] What CPU with VT or PACIFICA for Xen?
> 
> Petersson, Mats schrieb:
> >  
> >
> >   
> >> -----Original Message-----
> >> From: xen-users-bounces@xxxxxxxxxxxxxxxxxxx 
> >> [mailto:xen-users-bounces@xxxxxxxxxxxxxxxxxxx] On Behalf Of Marduk
> >> Sent: 15 February 2007 13:15
> >> To: xen-users@xxxxxxxxxxxxxxxxxxx
> >> Subject: RE: [Xen-users] What CPU with VT or PACIFICA for Xen?
> >>
> >> You can always ask your hw vendor.  They should be able to tell you
> >> definitively if their hardware supports the technology.
> >>     
> I tried this several times, but I didn't met anyone of the 
> vendors, who 
> sell cpu's, who even knew about virtualization, and if I told of 
> Pacifica or like that, it was like they heard the word for the first 
> time. Also I tried that kind of reqest directed to the 
> manufacturer itself.
> But here the same: no specifications available, no one of the staff 
> knowing about Pacifica.
> Maybe they don't like to be bound to any claim of ability of 
> their cpu's.

Since "Pacifica" is an internal AMD codename, there was NEVER any
product out untill AFTER this was renamed to SVM or AMD-V - there are
specs for this in the Vol. 2 of AMD64 Architecture Programmers Manual on
the AMD web-site. 

What different distributors know and don't is of course nothing that I
can do much about, but I can try to help clarify the documentation
issue. 

I'm also fairly sure that you'd get a decent answer if you call the
european tech-support that sits one floor above me. Whether that holds
for the US, Asia or anywhere else I can't really answer... [It does of
course depend a little bit on who you get, since most tech-support jobs
are fairly short-term (it's not the most interesting or well-paid
position compared), you may get someone who just started, or someone
that's been there for a while - the result depends on which one you
get...)

I can also guarantee that if you buy an AMD CPU that has DDR-2 memory
(excluding the Sempron brand ones) on a stable motherboard, it will work
with Xen. Of course, different problems with distributions and setup
issues excluded from that guarantee, as that is NOT something that any
CPU manufacturer can fix as such. 

--
Mats



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