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Re: [Xen-devel] Problems booting latest xen pv-ops linux kernel

To: Pasi Kärkkäinen <pasik@xxxxxx>
Subject: Re: [Xen-devel] Problems booting latest xen pv-ops linux kernel
From: Konrad Rzeszutek Wilk <konrad.wilk@xxxxxxxxxx>
Date: Wed, 18 Nov 2009 10:08:56 -0500
Cc: Xen Developers List <xen-devel@xxxxxxxxxxxxxxxxxxx>, Goswin von Brederlow <goswin-v-b@xxxxxx>
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On Wed, Nov 18, 2009 at 09:10:44AM +0200, Pasi Kärkkäinen wrote:
> On Wed, Nov 18, 2009 at 12:18:01AM +0100, Goswin von Brederlow wrote:
> > Hi,
> > 
> > I followed http://wiki.xensource.com/xenwiki/XenParavirtOps
> > to build a bleeding edge linux kernel with
> > 
> >   git clone git://git.kernel.org/pub/scm/linux/kernel/git/jeremy/xen.git 
> > linux-2.6-xen
> > 
> > I build the kernel for amd64 and installed Debians
> > xen-hypervisor-3.4-amd64 package and bootet. Xen comes up nicely and
> > starts the kernel. It detects my SATA disk (sata_sil driver) but then
> > fails to read block 0. Something in xen breaks the sata_sil driver.
> > 
> > Booting the kernel as bare-metal works fine.
> > 
> > Anyone an idea what is wrong? The wiki lists a few problems (e.g. on
> > 32bit use CONFIG_HIGHPTE=n) but nothing for 64bit. Anything config
> > option known to have sideeffects?
> > 
> You could try my .config:
> cd linux-2.6-xen
> cp -a .config .config-old
> wget -O .config 
> http://pasik.reaktio.net/xen/pv_ops-dom0-debug/config-
> make oldconfig
> <continue as usual>


The idea of the Wiki and people using it has been quite a good one. Do you think
it would make sense to include a checklist of things to when things don't work.
As in:

 1). Try this .config.
 2). Get serial console ('dmesg + xm dmesg') output to Xen-devel. To get this
     via the serial console follow these steps: ...blah blah

 3) and so on.

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