From mboxrd@z Thu Jan 1 00:00:00 1970 From: Sander Eikelenboom Subject: Re: Re: [pvops xen/next ][iommu] attenpt to passthrough PCI-e usb controllor to PV domU SUCCESS :-) Date: Tue, 23 Mar 2010 11:23:55 +0100 Message-ID: <1213743694.20100323112355@eikelenboom.it> References: <1017192770.20100321221949@eikelenboom.it> <1A42CE6F5F474C41B63392A5F80372B21D641D6D@shsmsx501.ccr.corp.intel.com> <1057357311.20100322111524@eikelenboom.it> <20100322191237.GB31521@phenom.dumpdata.com> <1609670718.20100322213550@eikelenboom.it> <20100322204916.GQ1878@reaktio.net> <1096247138.20100322222300@eikelenboom.it> <20100322212652.GT1878@reaktio.net> <20100322211209.GA653@phenom.dumpdata.com> <4BA8A3150200007800036677@vpn.id2.novell.com> Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable Return-path: In-Reply-To: <4BA8A3150200007800036677@vpn.id2.novell.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: Jan Beulich Cc: "xen-devel@lists.xensource.com" , Konrad Rzeszutek Wilk List-Id: xen-devel@lists.xenproject.org Hello Jan, How do these handle DMA related to the passthrough device in a PV-guest the= n ? From=20what i remember from previous (debian) xen kernels was that at least= swiotlb=3Dforce was needed as kernel options to the domU kernel to passthr= ough usb-controllers. -- Sander Tuesday, March 23, 2010, 11:16:37 AM, you wrote: >>>> Konrad Rzeszutek Wilk 22.03.10 22:12 >>> >>On Mon, Mar 22, 2010 at 11:26:52PM +0200, Pasi K=C3=A4rkk=C3=A4inen wrote: >>> On Mon, Mar 22, 2010 at 10:23:00PM +0100, Sander Eikelenboom wrote: >>> > Hello Pasi, >>> >=20 >>> > Ok added a few lines about it to that page. >>> >=20 >>>=20 >>> Ok. Are those options only needed for pvops domU kernel, >>> or also for linux-2.6.18-xen guests?=20 >> >>The 'swiotlb=3Dforce iommu=3Dsoft' are only needed when you do PCI >>passthrough to PV guests and for all kernels (SLES10, RHEL5, >>SLES11) and so on. > I don't think that's true for SLE10/SLE11. > Jan --=20 Best regards, Sander mailto:linux@eikelenboom.it