From mboxrd@z Thu Jan 1 00:00:00 1970 From: Alex Williamson Subject: Re: [PATCH] VT-d: improve RMRR validity checking Date: Wed, 10 Mar 2010 06:56:48 -0700 Message-ID: <1268229408.14039.151.camel@8530w.home> References: <4B59098B.6000108@intel.com> <4B590FA4.4000008@jp.fujitsu.com> <4B59132B.40607@intel.com> <4B59188C.50901@jp.fujitsu.com> <4B59660F.4000909@intel.com> <7162ab21003091339i4adb8669safd5e074607386a2@mail.gmail.com> <4B9706B3.3050903@intel.com> <1268191101.3015.30.camel@2710p.home> <4B9711CF.7030908@intel.com> <1268192253.3015.37.camel@2710p.home> <4B971F57.9000903@intel.com> <1268196438.3015.56.camel@2710p.home> <4B974438.3050806@intel.com> Mime-Version: 1.0 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <4B974438.3050806@intel.com> List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Sender: xen-devel-bounces@lists.xensource.com Errors-To: xen-devel-bounces@lists.xensource.com To: Weidong Han Cc: "xen-devel@lists.xensource.com" , Noboru Iwamatsu , "Cihula, Joseph" , "Kay, Allen M" , "linux@eikelenboom.it" , "keir.fraser@eu.citrix.com" List-Id: xen-devel@lists.xenproject.org On Wed, 2010-03-10 at 15:03 +0800, Weidong Han wrote: > > This patch is no problem on our platform which has two IOHs, two > IOAPICs. But there is only one DRHD, which is also INCLUDE_PCI_ALL DRHD. > Can you post your Xen boot logs? If you have two IOHs covered by one DRHD, it doesn't sound like the IOHs are peers of one another. Is this a core i5 system with a DRHD in the processor? Of maybe you're talking about one IOH and a subordinate ICH, which could easily be covered by one DRHD. The topology I'm trying to support has multiple IOHs, which are peers of one another. Interrupts are not routed through a "primary" IOH, so it would seem to make no sense (and I don't believe it would work) to include all the IOAPICs under one of them. Alex