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HI,<br>I have tried to also to passthrough the pci bridge but It doesn't work, I got that with de dmesg on my Dom0 :<br><br> 1297.293367] pciback: vpci: 0000:04:00.0: assign to virtual slot 0 ( this is HCA)<br>[ 1297.295538] pciback: vpci: 0000:03:07.1: assign to virtual slot 1 ( This is eth1)<br>[ 1297.298346] pciback: vpci: 0000:03:08.0: assign to virtual slot 2 ( this is the HCA bridge)<br>[ 1298.655743] pciback 0000:03:08.0: Driver tried to write to a read-only configuration space field at offset 0x3e, size 2. This may be harmless, but if you have problems with your device:<br>[ 1298.655747] 1) see permissive attribute in sysfs<br>[ 1298.655749] 2) report problems to the xen-devel mailing list along with details of your device obtained from lspci.<br><br><br>> From: rdreier@cisco.com<br>> To: sokar6012@hotmail.com<br>> CC: general@lists.openfabrics.org<br>> Subject: Re: [ofa-general] Infiniband with Xen<br>> Date: Wed, 20 May 2009 13:55:49 -0700<br>> <br>> > I'm currently working on the latest version of xen with debian (lenny), and I have done 2 PCI passthrough, the fisrt one is with eth1 and i got no probleme with this one, but the second one is with a infiniband adapter ( MT23108 Cougar revision A1,latest firmware 3.5) => It's not working<br>> > I got this message with dmesg on my DomU :<br>> > <br>> > [ 4.111023] ib_mthca: Mellanox InfiniBand HCA driver v1.0 (April 4, 2008)<br>> > [ 4.111047] ib_mthca: Initializing 0000:00:00.0<br>> > [ 4.111501] ib_mthca 0000:00:00.0: enabling device (0000 -> 0002)<br>> > [ 4.112859] ib_mthca 0000:00:00.0: No bridge found for 0000:00:00.0<br>> > [ 15.526745] ib_mthca 0000:00:00.0: PCI device did not come back after reset, aborting.<br>> > [ 15.526765] ib_mthca 0000:00:00.0: Failed to reset HCA, aborting.<br>> > <br>> > Do you know if there is a solution like previously with XEN smartio or Xen-IB (wich is no more developped) to do High Performance VMM-Bypass I/O in Virtual Machines.<br>> <br>> I'm not sure about smartio or Xen-IB, but you could try assigning both<br>> HCA PCI devices to your domU and see if it works better (the HCA should<br>> appear in lspci as both a PCI bridge and an actual HCA device, and the<br>> driver expects to find both)<br>> <br>> - R.<br><br /><hr />Découvrez toutes les possibilités de communication <a href='http://www.microsoft.com/windows/windowslive/default.aspx' target='_new'>avec vos proches</a></body>
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