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Re: [Xen-devel] [PATCH] libxl: Auto-assign NIC devids in initiate_domain_create



On Thu, 2014-01-09 at 15:04 +0000, Ian Jackson wrote:
> Ian Campbell writes ("Re: [PATCH] libxl: Auto-assign NIC devids in 
> initiate_domain_create"):
> > On Thu, 2014-01-09 at 11:33 +0100, Stefan Bader wrote:
> > > From bafc8f62ee3e3175ec4d978bceba4b5f891a597d Mon Sep 17 00:00:00 2001
> > > From: Stefan Bader <stefan.bader@xxxxxxxxxxxxx>
> > > Date: Wed, 8 Jan 2014 18:26:59 +0100
> > > Subject: [PATCH] libxl: Auto-assign NIC devids in initiate_domain_create
> > > 
> > > This will change initiate_domain_create to walk through NIC definitions
> > > and automatically assign devids to those which have not assigned one.
> > > The devids are needed later in domcreate_launch_dm (for HVM domains
> > > using emulated NICs). The command string for starting the device-model
> > > has those ids as part of its arguments.
> > > Assignment of devids in the hotplug case is handled by 
> > > libxl_device_nic_add
> > > but that would be called too late in the startup case.
> > > I also moved the call to libxl__device_nic_setdefault here as this seems
> > > to be the only path leading there and avoids doing the loop a third time.
> > > The two loops are trying to handle a case where the caller sets some 
> > > devids
> > > (not sure that should be valid) but leaves some unset.
> 
> Thanks.  Thanks also for the careful and comprehensive explanation.
> 
> > > Signed-off-by: Stefan Bader <stefan.bader@xxxxxxxxxxxxx>
> > 
> > Acked-by: Ian Campbell <ian.campbell@xxxxxxxxxx>
> 
> Acked-by: Ian Jackson <ian.jackson@xxxxxxxxxxxxx>
> 
> > I think from a release point of view we should take this since it is a
> > bug fix to the API which at least libvirt has tripped over (although
> > libvirt has worked around it, others may not have done so).
>  
> > Ian J: Does that make sense?
> 
> I agree.

Applied, thanks.

Ian.


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