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Re: [Xen-devel] Re: [PATCH] xen: mask XSAVE in cpuid since we don't allow guests to use it


  • To: Jeremy Fitzhardinge <jeremy@xxxxxxxx>
  • From: Boris Derzhavets <bderzhavets@xxxxxxxxx>
  • Date: Wed, 11 Mar 2009 00:26:11 -0700 (PDT)
  • Cc: Xen-devel <xen-devel@xxxxxxxxxxxxxxxxxxx>, Keir Fraser <keir.fraser@xxxxxxxxxxxxx>
  • Delivery-date: Wed, 11 Mar 2009 00:26:42 -0700
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  • List-id: Xen developer discussion <xen-devel.lists.xensource.com>

disk= [ phy:/dev/sdb5] seems not to be released after PV DomU shutdown.
Hence , second attempt to load DomU gets paused waiting for particular
device. When i reboot xen host, DomU can be loaded again.

--- On Tue, 3/10/09, Jeremy Fitzhardinge <jeremy@xxxxxxxx> wrote:
From: Jeremy Fitzhardinge <jeremy@xxxxxxxx>
Subject: Re: [Xen-devel] Re: [PATCH] xen: mask XSAVE in cpuid since we don't allow guests to use it
To: bderzhavets@xxxxxxxxx
Cc: "Keir Fraser" <keir.fraser@xxxxxxxxxxxxx>, "Xen-devel" <xen-devel@xxxxxxxxxxxxxxxxxxx>
Date: Tuesday, March 10, 2009, 8:29 PM

Boris Derzhavets wrote:
>
> Seems like new kernel brought up back some old issues with ubuntu 8.10
> devices. It never happened before patching 2.6.29-rc7 kernel on C2D boxes
with the same ubuntu 8.10 server release and 2.6.29-rc5.
> In particular, CentOS 5.2 PV DomU's xen-hotplug.log looks like:-
>
> xenstore-read: couldn't read path /local/domain/2/vm
> xenstore-read: couldn't read path /local/domain/9/vm
> xenstore-read: couldn't read path /local/domain/3/vm
> xenstore-read: couldn't read path /local/domain/4/vm
> Either xen-tools (or whatever else in xen unstable) requires correlation
> with patched kernel.
>

Ah, I noticed that too, but I don't see any obvious changes which might
have caused this. Time to pull out "git bisect" I think.

J

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