[vfio-users] How to choose a compatible motherboard?

[Eddie Yen]

Yes, it could be.
Haswell-E and Xeon E5 v3 both are LGA2011-V3, and they can using both
chipset.
Like X99 chipset can install not only Haswell-E but also E5 v3 CPU, but
most of servers using Server class chipset.

2015-10-24 13:10 GMT+08:00 Dan Ziemba <zman0900 at gmail.com>:

> Aren't the Haswell-E chips using the same socket as the Xeon E5?  Could
> it just be that anything in that socket supports ACS?
>
> -----Original Message-----
> From: Alex Williamson <alex.l.williamson at gmail.com>
> To: Nick Sukharev <nicksukharev at gmail.com>
> Cc: vfio-users <vfio-users at redhat.com>
> Subject: Re: [vfio-users] How to choose a compatible motherboard?
> Date: Thu, 22 Oct 2015 18:11:59 -0600
>
> On Thu, Oct 22, 2015 at 5:29 PM, Nick Sukharev <nicksukharev at gmail.com>
> wrote:
> > Here you go:
> > http://pastebin.com/He3EUWkn
> >
> 00:01.0 PCI bridge: Intel Corporation Xeon E5 v3/Core i7 PCI Express Root
> Port 1 (rev 02) (prog-if 00 [Normal decode])
>         ....
>         Capabilities: [110 v1] Access Control Services
>                 ACSCap: SrcValid+ TransBlk+ ReqRedir+ CmpltRedir+
> UpstreamFwd+ EgressCtrl- DirectTrans-
>                 ACSCtl: SrcValid+ TransBlk- ReqRedir+ CmpltRedir+
> UpstreamFwd+ EgressCtrl- DirectTrans-
>
> 00:01.1 PCI bridge: Intel Corporation Xeon E5 v3/Core i7 PCI Express Root
> Port 1 (rev 02) (prog-if 00 [Normal decode])
>         ....
>         Capabilities: [110 v1] Access Control Services
>                 ACSCap: SrcValid+ TransBlk+ ReqRedir+ CmpltRedir+
> UpstreamFwd+ EgressCtrl- DirectTrans-
>                 ACSCtl: SrcValid+ TransBlk- ReqRedir+ CmpltRedir+
> UpstreamFwd+ EgressCtrl- DirectTrans-
>
> 00:03.0 PCI bridge: Intel Corporation Xeon E5 v3/Core i7 PCI Express Root
> Port 3 (rev 02) (prog-if 00 [Normal decode])
>         ....
>         Capabilities: [110 v1] Access Control Services
>                 ACSCap: SrcValid+ TransBlk+ ReqRedir+ CmpltRedir+
> UpstreamFwd+ EgressCtrl- DirectTrans-
>                 ACSCtl: SrcValid+ TransBlk- ReqRedir+ CmpltRedir+
> UpstreamFwd+ EgressCtrl- DirectTrans-
>
> Well, your processor root ports do support ACS, so you're right, a Xeon
> wouldn't offer you an advantage in this space.  This goes against what I've
> heard from Intel.  I don't know how to predict which Core processors will
> include this feature.  Can others double check their processors for ACS and
> report if they find it?  Anyone else with a Haswell-E as reported by ark or
> a "High End Desktop Processor" as reported by ark that does or does not
> expose ACS like above?
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