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Re: [Xen-users] Re: HVM domU Solaris 10 (Marc Patino G?mez)

To: xen-users@xxxxxxxxxxxxxxxxxxx
Subject: Re: [Xen-users] Re: HVM domU Solaris 10 (Marc Patino G?mez)
From: "sven waeyenbergh" <sven.waeyenbergh@xxxxxxxxx>
Date: Sat, 22 Sep 2007 13:46:54 +0200
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Hi list,

i've been wondering the same thing as Marc Patino above,
i have been building Intel boxes up until now, especially with the multicore Intels being quite cheap.
can anyone confirm that a new large box, meant to run paravirt and hvm, AMD would be the better choice ?
i think real mode HVM would be very interesting to have.
does anyone know where to find more info on this ?


On 9/21/07, Marc Patino Gómez <mpatino@xxxxxxxxxxxx> wrote:
Hi again Joe,

so.. in your opinion AMD processors are better to make h/w
virtualization? I am planing to buy a "big server" (4 ways) to host
multiple Windows domU and of course I want the most convenient CPUs for it.

Thanks in advance,


Joe Bonasera wrote:
> Because AMD h/w virtualization support virtualizes guest real mode, but
> Intel VT-x doesn't. Therefore Xen has to rely on software
> instruction emulation for guest real mode. The Xen code
> for that emulation is incomplete and somewhat wrong. We've fixed it in
> some
> patches we apply to the hypervisor version that will come with
> OpenSolaris.
> However, the patches have not been pushed back into the upstream
> code base yet. Until that happens, if you're interested in using
> S10 in an HVM domain, use AMD processors.
> Joe
> ------------------------------
> Message: 7
> Date: Fri, 21 Sep 2007 17:01:58 +0200
> From: Marc Patino G?mez <mpatino@xxxxxxxxxxxx >
> Subject: [Xen-users] HVM domU Solaris 10
> To: xen-users@xxxxxxxxxxxxxxxxxxx
> Message-ID: < 46F3DCE6.4080006@xxxxxxxxxxxx>
> Content-Type: text/plain; charset=ISO-8859-1; format=flowed
> Hi,
> Anybody knows why a Solaris 10 HVM domU hangs when kernel is booting on
> my Intel CPU box. I had no problem installing Solaris 10 on an AMD CPU
> Box.
> Any advices?
> Many thanks,
> Marc
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