[Xen-devel] Re: [Qemu-devel] [PATCH RESEND v3] xen: implement unplug protocol in xen_platform

[Alexander Graf <agraf@xxxxxxx>]

On 07/27/2011 02:58 PM, Kevin Wolf wrote:
> Am 27.07.2011 14:44, schrieb Alexander Graf:
> > On 07/18/2011 06:07 PM, stefano.stabellini@xxxxxxxxxxxxx wrote:
> > > From: Stefano Stabellini<stefano.stabellini@xxxxxxxxxxxxx>
> > >
> > > The unplug protocol is necessary to support PV drivers in the guest: the
> > > drivers expect to be able to "unplug" emulated disks and nics before
> > > initializing the Xen PV interfaces.
> > > It is responsibility of the guest to make sure that the unplug is done
> > > before the emulated devices or the PV interface start to be used.
> > >
> > > We use pci_for_each_device to walk the PCI bus, identify the devices and
> > > disks that we want to disable and dynamically unplug them.
> > >
> > > Changes in v2:
> > >
> > > - use PCI_CLASS constants;
> > >
> > > - replace pci_unplug_device with qdev_unplug;
> > >
> > > - do not import hw/ide/internal.h in xen_platform.c;
> > >
> > >
> > > Changes in v3:
> > >
> > > - introduce piix3-ide-xen, that support hot-unplug;
> > >
> > > - move the unplug code to hw/ide/piix.c;
> > >
> > > - just call qdev_unplug from xen_platform.c to unplug the IDE disks;
> > >
> > > Signed-off-by: Stefano Stabellini<stefano.stabellini@xxxxxxxxxxxxx>
> > Kevin, please ack.
> Trivial rebase of the version I already acked.
Thanks :). Applied to the xen-next branch.


Alex


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