Fedora xen - Feb 2009 - Adding qemu disable pci devices patch to Fedora Xen

Hello.

Would it be possible to add Qemu "disable pci devices" patch to Fedora
Xen
packages? It allows HVM domains (or more specifically PV drivers running
in HVM domains) to hide qemu emulated disk/network devices in a sane way to
prevent possible corruption and other problems when both the PV devices and Qemu
emulated devices are present at the same time..  

It''s mostly needed for Xen gplpv drivers by James Harper. The same
code/feature is also being used by Citrix/Xensource commercial Windows PV
drivers. 

The patch has been in xen-unstable (3.4) for a while already without
problems. 

Patch against Xen 3.3.1 (by James Harper):
http://www.meadowcourt.org/downloads/qemu_disable_patches.zip

Discussion about it on xen-devel:
http://lists.xensource.com/archives/html/xen-devel/2009-01/msg00705.html

This would be a needed feature soon when HVM domains start working ok with
pv_ops dom0 :) 

-- Pasi

On Thu, Feb 26, 2009 at 09:12:35PM +0200, Pasi K?rkk?inen
wrote:
> Hello.
> 
> Would it be possible to add Qemu "disable pci devices" patch to
Fedora Xen
> packages? It allows HVM domains (or more specifically PV drivers running
> in HVM domains) to hide qemu emulated disk/network devices in a sane way to
> prevent possible corruption and other problems when both the PV devices and
Qemu
> emulated devices are present at the same time..  
> 
> It''s mostly needed for Xen gplpv drivers by James Harper. The same
> code/feature is also being used by Citrix/Xensource commercial Windows PV
> drivers. 
> 
> The patch has been in xen-unstable (3.4) for a while already without
> problems. 
Since its merged in xen-unstable & feedback seems positive, I''ve 
no
objections to it being added to the xen RPM in F11. 


Daniel
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On Thu, Feb 26, 2009 at 08:27:14PM +0000, Daniel P. Berrange
wrote:
> On Thu, Feb 26, 2009 at 09:12:35PM +0200, Pasi K?rkk?inen wrote:
> > Hello.
> > 
> > Would it be possible to add Qemu "disable pci devices" patch
to Fedora Xen
> > packages? It allows HVM domains (or more specifically PV drivers
running
> > in HVM domains) to hide qemu emulated disk/network devices in a sane
way to
> > prevent possible corruption and other problems when both the PV
devices and Qemu
> > emulated devices are present at the same time..  
> > 
> > It''s mostly needed for Xen gplpv drivers by James Harper. The
same
> > code/feature is also being used by Citrix/Xensource commercial Windows
PV
> > drivers. 
> > 
> > The patch has been in xen-unstable (3.4) for a while already without
> > problems. 
> 
> Since its merged in xen-unstable & feedback seems positive,
I''ve  no
> objections to it being added to the xen RPM in F11. 
> 
Ok, good.

Gerd: Could you apply that patch for the next Fedora Xen build? 

-- Pasi

Pasi Kärkkäinen wrote:
> Gerd: Could you apply that patch for the next Fedora Xen build? 
Already done.
Commit message well hidden in the mass rebuild email flood ;)

cheers,
  Gerd

On Mon, Mar 02, 2009 at 11:53:10AM +0100, Gerd Hoffmann
wrote:
> Pasi Kärkkäinen wrote:
> > Gerd: Could you apply that patch for the next Fedora Xen build? 
> 
> Already done.
> Commit message well hidden in the mass rebuild email flood ;)
> 
Oh, nice, that was fast :)

Thanks!

-- Pasi

On Mon, Mar 02, 2009 at 01:24:26PM +0200, Pasi Kärkkäinen
wrote:
> On Mon, Mar 02, 2009 at 11:53:10AM +0100, Gerd Hoffmann wrote:
> > Pasi Kärkkäinen wrote:
> > > Gerd: Could you apply that patch for the next Fedora Xen build? 
> > 
> > Already done.
> > Commit message well hidden in the mass rebuild email flood ;)
> > 
> 
> Oh, nice, that was fast :)
> 
> Thanks!
> 
* Sat Feb 28 2009 Gerd Hoffmann <kraxel@redhat.com> - 3.3.1-6
- fix xenstored crash.
- backport qemu-unplug patch.

So I guess it''s that one..

-- Pasi

Pasi Kärkkäinen wrote:
> * Sat Feb 28 2009 Gerd Hoffmann <kraxel@redhat.com> - 3.3.1-6
> - fix xenstored crash.
> - backport qemu-unplug patch.
Yep.

cheers,
  Gerd