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RE: [Xen-devel] [PATCH 2/4] Various VT-d code cleanup


  • To: "Espen Skoglund" <espen.skoglund@xxxxxxxxxxxxx>
  • From: "Han, Weidong" <weidong.han@xxxxxxxxx>
  • Date: Tue, 29 Jul 2008 14:39:39 +0800
  • Cc: xen-devel@xxxxxxxxxxxxxxxxxxx
  • Delivery-date: Mon, 28 Jul 2008 23:40:28 -0700
  • List-id: Xen developer discussion <xen-devel.lists.xensource.com>
  • Thread-index: AcjuVZc+UmJgnUd0Rd+WSWHDP71MKwC8Arzw
  • Thread-topic: [Xen-devel] [PATCH 2/4] Various VT-d code cleanup

System may have more than one PCI segments (IOH), so it's possible there
are more than one INCLUDE_ALL DRHDs.

Randy (Weidong)

Espen Skoglund wrote:
> Hmmm... The VT-d spec (Section 8.3) states that the INCLUDE_ALL DRHD
> strcuture must be enumerated after all other DRHD structures for that
> PCI segment.
> 
>       eSk
> 
> 
> [Weidong Han]
>> There is only one INCLUDE_ALL DMAR unit in system, but no
>> restriction on whether it's the last unit.
> 
>> Signed-off-by: Weidong Han <weidong.han@xxxxxxxxx>
>> _______________________________________________
>> Xen-devel mailing list
>> Xen-devel@xxxxxxxxxxxxxxxxxxx
>> http://lists.xensource.com/xen-devel


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