From mboxrd@z Thu Jan 1 00:00:00 1970 From: Andrew Cooper Subject: Re: AMD IOMMU disabled - No Perdev Intremap Date: Sun, 6 Oct 2013 13:58:38 +0100 Message-ID: <52515E7E.8050209@citrix.com> References: <1619361332.20131006141037@eikelenboom.it> Mime-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Return-path: In-Reply-To: List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Sender: xen-devel-bounces@lists.xen.org Errors-To: xen-devel-bounces@lists.xen.org To: =?ISO-8859-1?Q?Ferdinand_N=F6lscher?= Cc: Sander Eikelenboom , xen-devel@lists.xen.org List-Id: xen-devel@lists.xenproject.org On 06/10/2013 13:56, Ferdinand N=F6lscher wrote: > Hi Sander, > > Thanks for your reply. > > On 10/06/2013 02:10 PM, Sander Eikelenboom wrote: >> Sunday, October 6, 2013, 1:36:33 PM, you wrote: >> >>> Hi! >>>> From other people posting to this list, I know that there has >>>> been a >>> bug related to the issue described in Xen Security Advisory 36 >>> that disables iommu for some AMD users like me. >> What motherboard do you have ? > I have an ASUS M5A99X EVO Rev 1.01 > > >> It depends if it's the north or southbridge ioapic but try using >> the new xen boot parameter: (add it to the xen.gz line in grub) >> >> ivrs_ioapic[0]=3D00:14.0 >> >> or >> >> ivrs_ioapic[0]=3D00:00.1 > I tried both, it still fails to enable i/o virtualisation. Can you post a full xl dmesg, booting with iommu=3Ddebug,verbose as well? ~Andrew