linux-kernel - Re: [PATCH 0/16 v6] PCI: Linux kernel SR-IOV support

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Message-ID: <4913CFBC.4040203@intel.com>
Date:	Fri, 07 Nov 2008 13:18:52 +0800
From:	"Zhao, Yu" <yu.zhao@...el.com>
To:	Greg KH <greg@...ah.com>
CC:	"linux-pci@...r.kernel.org" <linux-pci@...r.kernel.org>,
	"achiang@...com" <achiang@...com>,
	"grundler@...isc-linux.org" <grundler@...isc-linux.org>,
	"mingo@...e.hu" <mingo@...e.hu>,
	"jbarnes@...tuousgeek.org" <jbarnes@...tuousgeek.org>,
	"matthew@....cx" <matthew@....cx>,
	"randy.dunlap@...cle.com" <randy.dunlap@...cle.com>,
	"rdreier@...co.com" <rdreier@...co.com>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"kvm@...r.kernel.org" <kvm@...r.kernel.org>,
	"virtualization@...ts.linux-foundation.org" 
	<virtualization@...ts.linux-foundation.org>
Subject: Re: [PATCH 0/16 v6] PCI: Linux kernel SR-IOV support

Greg KH wrote:
> On Wed, Oct 22, 2008 at 04:38:09PM +0800, Yu Zhao wrote:
>> Greetings,
>>
>> Following patches are intended to support SR-IOV capability in the
>> Linux kernel. With these patches, people can turn a PCI device with
>> the capability into multiple ones from software perspective, which
>> will benefit KVM and achieve other purposes such as QoS, security,
>> and etc.
> 
> Is there any actual users of this API around yet?  How was it tested as
> there is no hardware to test on?  Which drivers are going to have to be
> rewritten to take advantage of this new interface?

Yes, the API is used by Intel, HP, NextIO and some other anonymous 
companies as they rise questions and send me feedback. I haven't seen 
their works but I guess some of drivers using SR-IOV API are going to be 
released soon.

My test was done with Intel 82576 Gigabit Ethernet Controller. The 
product brief is at 
http://download.intel.com/design/network/ProdBrf/320025.pdf and the spec 
is available at 
http://download.intel.com/design/network/datashts/82576_Datasheet_v2p1.pdf

Regards,
Yu
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