Re: [Xen-users] Patching a "vanilla" kernel for use with Xen dom0/domU

["Daniel P. Berrange" <berrange@xxxxxxxxxx>]

On Mon, Feb 05, 2007 at 10:22:41AM -0700, Derek wrote:
> Hi folks,
> 
> If my understanding of the release notes is correct, the newest linux kernel
> released yesterday (2.6.20) has xen stuff built right in.  So, my guess is
> that a stock 2.6.20, appropriately configured, ought to work as a xen
> dom0/domU without further patches.   Is this true, or am I reading too much
> into the mention of xen virtualization in the  release notes?

While I really wish that were correct, sadly Xen is not merged upstream.
The 2.6.20 kernel has paravirt_ops which provides a generic way to plug
into para-virtualization to the kernel. The Xen implementation for 
paravirt_ops, however, is *not* merged.

So you still need to use either the (ancient) 2.6.16 official releases of
Xen 3.0.3/3.0.4, xen-unstable which is on 2.6.18, or the best option is to
use one of the OS distro kernels - Fedora, RHEL, Suse, Debian, etc
all forward port Xen 3.0.3/3.0.4 kernels to recent upstream kernels 
such as 2.6.18/19.

Regards,
Dan.
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