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RE: [Xen-ia64-devel] crash while initializing balloon driver

To: "Zhang, Jingke" <jingke.zhang@xxxxxxxxx>
Subject: RE: [Xen-ia64-devel] crash while initializing balloon driver
From: Alex Williamson <alex.williamson@xxxxxx>
Date: Thu, 04 Jan 2007 21:22:18 -0700
Cc: xen-ia64-devel <xen-ia64-devel@xxxxxxxxxxxxxxxxxxx>
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On Thu, 2007-01-04 at 21:02 -0700, Alex Williamson wrote:
> On Fri, 2007-01-05 at 11:31 +0800, Zhang, Jingke wrote:
> > Hi Alex,
> >     With the new Cset#13122, I met the xen0's crash even
> > dom0_mem=512M. My elilo.conf and the serial port information are in
> > the attachments. Thank you.
>    Can you verify that it works with Isaku's patch here:
> http://lists.xensource.com/archives/html/xen-devel/2007-01/msg00102.html
> It works on HP systems as long as I don't specify a dom0_mem= that
> leaves gaps in the memory map, I was hoping it would be true in the
> interim for other systems as well.  Thanks,

  Actually, looking more closely at your attached log, this cset may be
the culprit:


Does reverting this cset allow you to boot (hg export 13117 | patch -p1
-R)?  The balloon driver crash occurs much later in dom0 bootup.  Looks
like we should probably only set the noncache flag if the WB attribute
is not present since a range can have both WB and UC set.  Thanks,


Alex Williamson                             HP Open Source & Linux Org.

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