From mboxrd@z Thu Jan  1 00:00:00 1970
From: Yosuke Iwamatsu <y-iwamatsu@ab.jp.nec.com>
Subject: [PATCH][HVM] pass-through PCI device hotplug support
Date: Wed, 20 Feb 2008 13:45:31 +0900
Message-ID: <47BBB06B.5050006@ab.jp.nec.com>
References: <20080215133201.GB21201@edwin-srv.sh.intel.com>
	<47B97FC2.9000108@ab.jp.nec.com>
	<20080220035613.GC8550@edwin-srv.sh.intel.com>
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To: "Zhai, Edwin" <edwin.zhai@intel.com>
Cc: xen-devel@lists.xensource.com
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Zhai, Edwin wrote:
> 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)

No, I left it as it was.

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

No, I included hotplug handling methods in pcifront driver
which work only on PV linux.

Thanks,
----------
     Yosuke

> 
> 
> 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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>>
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