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Re: [Xen-users] Xen 3.3 hypervisor with stock dom0 kernel from Debian Et

To: echo@xxxxxxxxxxxx
Subject: Re: [Xen-users] Xen 3.3 hypervisor with stock dom0 kernel from Debian Etch?
From: "Thiago Camargo Martins Cordeiro" <thiagocmartinsc@xxxxxxxxx>
Date: Wed, 24 Sep 2008 14:31:28 -0300
Cc: xen-users@xxxxxxxxxxxxxxxxxxx, xen-users@xxxxxxxxxxxxxxx
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Tim,

 Have you setup "nosmp" option in your 2.6.24 kernel xen ?

Regards,
Thiago

2008/9/24 Tim Post <echo@xxxxxxxxxxxx>
Hello Henrik :)

On Wed, 2008-09-24 at 12:46 +0200, xen-users@xxxxxxxxxxxxxxx wrote:
> Hi.
>
> a) Is it possible to use the stock Xen/dom0 kernel from Debian Etch [1]
> with the Xen 3.3 hypervisor?
>
> b) If a), is it advisable at all?
>
> c) If b), is this difficult to achieve or can I just to compile the
> hypervisor from source [2]?

I can only advise the following:

1 - When using something other than the official XenLinux 2.6.18,
   ensure that you do proper regression tests prior to putting it
   in production. This means, take a 64 bit dom-0, mix 32/64 bit
   guests and hammer the guests for some time, or vice-versa.

2 - Building at least the HV and tools from source is desirable.
   While some distributions apply some measure of sanity prior to
   releasing their patched versions, not all do.

3 - If you use some distributions xen-0 kernel that is newer than the
   official XenLinux kernel, ensure that it will be supported until
   dom-0 operations appear in mainstream Linux.

Many of us are now caught with ad-hoc 2.6.24 xen-0 patched kernels in
production, this is a nightmare that you can escape with a bit of
diligence.

Cheers,
--Tim



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