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[Xen-users] Fw: compiling an old XEN version

  • To: "xen-users@xxxxxxxxxxxxx" <xen-users@xxxxxxxxxxxxx>
  • From: maheen butt <maheen_butt26@xxxxxxxxx>
  • Date: Tue, 28 Aug 2012 23:42:46 -0700 (PDT)
  • Delivery-date: Wed, 29 Aug 2012 06:43:58 +0000
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----- Original Message -----
From: Ian Campbell <Ian.Campbell@xxxxxxxxxx>
To: maheen butt <maheen_butt26@xxxxxxxxx>
Cc: Fajar A. Nugraha <list@xxxxxxxxx>; "xen-users@xxxxxxxxxxxxx" 
Sent: Tuesday, August 28, 2012 1:51 PM
Subject: Re: [Xen-users] compiling an old XEN version

On Mon, 2012-08-27 at 12:27 +0100, maheen butt wrote:
> On Thu, Aug 9, 2012 at 12:49 PM, maheen butt <maheen_butt26@xxxxxxxxx> wrote:
> > hi all,
> > I want to use Xenlinux and an old version of Xen hypervisor xen 3.2.0.
> My first question would be "why"?
> For MS thesis I'm considering Xen to port it for MIPS. as there is no PV_ops 
> support available in case of MIPS so I'm forced to use old versions of Xen

pvops is an internal implementation detail of the upstream Linux x86
port to Xen. It has absolutely no bearing on which version of Xen you
run and it isn't really relevant for anything other than x86 unless you
intend to replicate that infrastructure on MIPS.

I'm saying so as Debian squeeze is using 2.6.32 kernel (pv_ops support is 
included from
2.6.23) and it is told on http://wiki.xen.org/wiki/Dom0_Kernels_for_Xen that 
Xen >= 4.0 is required.
there is link between kernel version and Xen version. am I right?

There is also no particular link between Xen and the dom0/domU kernel (this
is the reason Xen stopped shipping a patched kernel tree). If you are
working on a new port then I would strongly suggest that you use
xen-unstable and upstream Linux kernel as your starting point. You will
find there is very little interest in the developer community in
supporting a port to anything older.


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