Re: [Xen-devel] [PATCH][HVM] pass-through PCI device hotplug support

["Zhai, Edwin" <edwin.zhai@xxxxxxxxx>]

Thanks for you info.

Did you change the PCI dev config in xend, which is not friendly to hotplug?
(only one dev node for all pass-through devices)

Do you have a HVM PV driver for pass-through device?


Thanks,


On Mon, Feb 18, 2008 at 09:53:22PM +0900, Yosuke Iwamatsu wrote:
> Hi,
> 
> Just for your information,
> I have been working on pass-through PCI device hotplug for PV domains,
> and now pci-attach/detach for PV domains worked successfully.
> I think I can submit an RFC patch in a few days.
> 
> Thanks,
> -----------------
> Yosuke Iwamatsu
>   NEC Corporation
> 
> 
> Zhai, Edwin wrote:
> > Keir,
> > 
> > This patch is the new version against 17051 to enable HVM guest VT-d device 
> > hotplug.
> > 
> > 
> > ** Currently only 2 virtual pci slots(6~7) are made as being capable of 
> > hotplug, 
> > so more than 2 vtd dev can't be hotplugged, but we can easily extend it in 
> > future.
> > 
> > Three new commands are added:
> > "xm pci-list domid" show the current assigned vtd device, like:
> > VSlt  domain   bus   slot   func
> > 0x6      0x0  0x02   0x00    0x0
> > 
> > "xm pci-detach" hot remove the specified vtd device by the virtual slot, 
> > like:
> > xm pci-detach EdwinHVMDomainVtd 6
> > 
> > "xm pci-attach DomainID dom bus dev func [vslot]" hot add a new vtd device 
> > in 
> > the vslot. If no vslot specified, a free slot will be picked up. e.g. to 
> > insert 
> > '0000:03:00.0':
> > xm pci-attach EdwinHVMDomainVtd 0 3 0 0
> > 
> > ** guest pci hotplug
> > linux: pls. use 2.6.X and enable ACPI PCI hotplug ( Bus options=> PCI 
> > hotplug => 
> > ACPI PCI hotplug driver)
> > windows: 2000/xp/2003/vista are all okay
> > 
> > 
> > Thanks a lot.
> > 
> > 
> > 
> > ------------------------------------------------------------------------
> > 
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> > http://lists.xensource.com/xen-devel
> 
> 
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> 

-- 
best rgds,
edwin

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