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RE: [Xen-devel] [PATCH][ioemu] support the assignment of the VF of Intel

To: "Cui, Dexuan" <dexuan.cui@xxxxxxxxx>, Simon Horman <horms@xxxxxxxxxxxx>
Subject: RE: [Xen-devel] [PATCH][ioemu] support the assignment of the VF of Intel 82599 10GbE Controller
From: "Rose, Gregory V" <gregory.v.rose@xxxxxxxxx>
Date: Thu, 6 Aug 2009 08:51:32 -0700
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Thread-topic: [Xen-devel] [PATCH][ioemu] support the assignment of the VF of Intel 82599 10GbE Controller
The 82576 does not need this patch.  It's PCIe capability structure in the 
Virtual Function devices is set up correctly.

- Greg 

-----Original Message-----
From: xen-devel-bounces@xxxxxxxxxxxxxxxxxxx 
[mailto:xen-devel-bounces@xxxxxxxxxxxxxxxxxxx] On Behalf Of Cui, Dexuan
Sent: Tuesday, August 04, 2009 6:56 PM
To: Simon Horman
Cc: xen-devel@xxxxxxxxxxxxxxxxxxx; Ian Jackson
Subject: RE: [Xen-devel] [PATCH][ioemu] support the assignment of the VF of 
Intel 82599 10GbE Controller

Hi Simon,
I didn't test 82576 myself, but I think it doesn't need such a change per its 
datasheet.

Thanks,
-- Dexuan



-----Original Message-----
From: Simon Horman [mailto:horms@xxxxxxxxxxxx] 
Sent: 2009?8?4? 8:04
To: Cui, Dexuan
Cc: Ian Jackson; xen-devel@xxxxxxxxxxxxxxxxxxx
Subject: Re: [Xen-devel] [PATCH][ioemu] support the assignment of the VF of 
Intel 82599 10GbE Controller

On Fri, Jul 31, 2009 at 10:16:46PM +0800, Cui, Dexuan wrote:
> The datasheet is available at
> http://download.intel.com/design/network/datashts/82599_datasheet.pdf
> 
> See 'Table 9.7. VF PCIe Configuration Space' of the datasheet, the PCI
> Express Capability Structure of the VF of Intel 82599 10GbE Controller looks
> trivial, e.g., the PCI Express Capabilities Register is 0, so the Capability
> Version is 0 and pt_pcie_size_init() would fail.
> 
> We should not try to expose the PCIe cap of the device to guest.
> 
> Signed-off-by: Dexuan Cui <dexuan.cui@xxxxxxxxx>

Hi Dexuan,

is a similar change needed for the 82576?


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