From mboxrd@z Thu Jan 1 00:00:00 1970 From: Avi Kivity Subject: Re: PCI passthrough resource remapping Date: Thu, 14 Jan 2010 15:59:53 +0200 Message-ID: <4B4F2359.9040100@redhat.com> References: <20100109024500.GB4727@localhost.localdomain> <20100110221538.GF4727@localhost.localdomain> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Cc: Alexander Graf , kvm@vger.kernel.org To: nemesis@icequake.net Return-path: Received: from mx1.redhat.com ([209.132.183.28]:52697 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756729Ab0ANN77 (ORCPT ); Thu, 14 Jan 2010 08:59:59 -0500 In-Reply-To: <20100110221538.GF4727@localhost.localdomain> Sender: kvm-owner@vger.kernel.org List-ID: On 01/11/2010 12:15 AM, Ryan C. Underwood wrote: > I guess I'll run the things I've found by the list to see if I'm off > track or not. > > There is this patch: > http://marc.info/?l=xen-devel&m=124748015304566&w=4 > > which would seem to be related to what I'm doing, trying to pass through > a multifunction device (a Ricoh firewire controller which has digital > media card reader subfunctions). > > Then there is this patch: > http://patchwork.kernel.org/patch/20195/ > > Which is related to PCI passthrough without VT-d, but I have no idea if > this patch is necessary or sufficient. > That effort has been discontinues. > Also, just for further complication, the Ricoh chip does not support > MSI and shares an IRQ on the system board with the USB host controller. > I have rebound the USB host controller to pci-stub, but I'm not sure if > that totally takes care of the IRQ-sharing-without-MSI issue. > Can you post lspci -vv output for that card? If it is pci 2.3 compliant we might be able to handle the sharing. -- error compiling committee.c: too many arguments to function