Maciej,
As of November 2007 RH had made a decision stop forward porting
Xen (2.6.18)  to  2.6.24 (and higher)  kernels and work on so called
pv_ops. At mean time F9 has it implemented only for 32-bit DomUs.
pv_ops implementation for Dom0 is scheduled for F10 (2.6.25)
In my very personal opinion, RHEL 5.1 as well as F8  provides
Enterprise Class Xen Virtualization solutions right now. 
You can go another way and purchase XenServer from Citrix directly.
If you want to be safe you have to make a deal with Leading Xen vendors.
If your primery concern is FreeBSD HVM DomUs i would look for
decision from Citrix directly. I am also aware about one shop running
FreeBSD HVM DomUs (32 and 64-bit)  at  Ubuntu 8.04 Dom0 (64-bit).
on AMD boxes .
  I don't have any idea, what kind of patching has been done for this
particular "Super Ubuntu 8 Phenomen". Just remind your own experience
with Ubuntu 8.04.
  I also point your attention to the fact , that Xen 3.2.1 broke backward compatibility with Xen 3.1.2. However , Xen 3.1 doesn't allow FreeBSD
to run in HVM Domain. Xen 3.2 allows to disable VMXASSIST and
in Xen 3.3 VMXASSIST will be disabled by default.
Have a nice time.
-b.


--- On Wed, 4/30/08, Maciej Jan Broniarz <[EMAIL PROTECTED]> wrote:

> From: Maciej Jan Broniarz <[EMAIL PROTECTED]>
> Subject: Re: [xen-discuss] Disabling VMXASSIST in Xen 3.2.1 tested OK.
> To: "Boris Derzhavets" <[EMAIL PROTECTED]>
> Cc: [email protected]
> Date: Wednesday, April 30, 2008, 7:22 AM
> 2008/4/30 Boris Derzhavets <[EMAIL PROTECTED]>:
> > HVM FreeBSD 7.0 (i386) DomU installed at Xen 3.2.1
> CentOS 5.1 Dom0 (64-bit)
> > with no problems. Singe DVD ISO for FreeBSD 7.0 has
> been used for install.
> > SSH conections from DomU to Dom0 and vice verca have
> been tested OK.
> > I'll atach a couple of screenshots shortly.
> > Disabling VMXASSIST in Xen 3.2.1 has been tested for
> :-
> > 1. Solaris 08/07 HVM DomU (32-bit)
> > 2. FreeBSD 7.0 HVM DomU (32-bit)
> > However, i was not able to create 64-bit DomUs in
> both case.
> >
>
> You suggest using xen built from source. Are there any
> problems during
> an upgrade. I need to deploy a rather productional
> enviroment. I
> wonder, is it possible, that some serious problems will
> occur while
> upgrading to a next xen release.
>
> gausus
> > This message posted from opensolaris.org
> > _______________________________________________
> > xen-discuss mailing list
> > [email protected]
> >
>
>
>
> --
> [ -----< Maciej Jan Broniarz || [EMAIL PROTECTED]
> >------ ]
> | Siamo qui \ sotto la stessa luce \ sotto la sua
> croce \ |
> | cantando ad una voce \ E l'Emmanuel Emmanuel,
> Emmanuel, |
> [ ---------------< E l'Emmanuel, Emmanuel
> >-------------- ]


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