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Bug in pci-detach (Was: Re: [Xen-devel] Re: VT-d HowTo Update)

To: "Cui, Dexuan" <dexuan.cui@xxxxxxxxx>
Subject: Bug in pci-detach (Was: Re: [Xen-devel] Re: VT-d HowTo Update)
From: Simon Horman <horms@xxxxxxxxxxxx>
Date: Wed, 22 Apr 2009 11:44:50 +1000
Cc: "Han, Weidong" <weidong.han@xxxxxxxxx>, "xen-devel@xxxxxxxxxxxxxxxxxxx" <xen-devel@xxxxxxxxxxxxxxxxxxx>, Christian Tramnitz <chris.ace@xxxxxxx>, Keir Fraser <keir.fraser@xxxxxxxxxxxxx>, "Zhai, Edwin" <edwin.zhai@xxxxxxxxx>
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On Wed, Apr 22, 2009 at 09:11:58AM +1000, Simon Horman wrote:
> On Tue, Apr 21, 2009 at 05:16:14PM +0800, Cui, Dexuan wrote:
> > Simon Horman wrote:
> > > Hi,
> > > 
> > > in preparation for 3.4.0 I have made a number of updates to the VT-d
> > > Howto. I have tried to retain the original information while
> > > reorganising things a bit. I have also added information on recent
> > > work I have done in this area. 
> > > 
> > > Apologies in advance for any errors, accidental deletions, etc...
> > > 
> > > http://wiki.xensource.com/xenwiki/VTdHowTo
> > 
> > Hi Simon,
> > There is a bug: we can't pci-detach a statically-assigned (I mean: use the 
> > pci string in hvm config file) devices for hvm guest.
> > Accordong my limited experience, after a device is assigned to hvm guest, 
> > ioemu does write the correct vslots value into xenstore, but looks xend 
> > can't get the correct value somwhow.
> > Could you help to have a look? Thanks!
> Sure, I can look into that. Do you have a version that you are worried
> about? It did seem to work the last time that I checked.

Hi Dexuan,

I am seeing this bug too. I'll try and get a fix ASAP.

Simon Horman
  VA Linux Systems Japan K.K. Satellite Lab in Sydney, Australia
  H: www.vergenet.net/~horms/            W: www.valinux.co.jp/en

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