Hi, Have you resolve your problem with shared IRQ lines? I have checked out qemu-kvm 0.15.0 and found that Jan Kiszka patch was applied to latest version of kvm. [PATCH 0/5] pci-assign: Host IRQ sharing suppport + some fixes and cleanups http://thread.gmane.org/gmane.comp.emulators.kvm.devel/64601 Which version of linux kernel do you use? I have tried with 3.0.0. It looks that Jan Kiszka`s patches were not added to that kernel version. Maybe it is in 2.6.xxx? Any ideas how to fix it? :) -----Original Message----- From: kvm-owner@xxxxxxxxxxxxxxx [mailto:kvm-owner@xxxxxxxxxxxxxxx] On Behalf Of Michael Sturm Sent: Saturday, August 13, 2011 7:05 AM To: kvm@xxxxxxxxxxxxxxx Subject: Shared IRQ with PCI Passthrough? Hi, back in Dec 2010 Jan Kiszka posted a number of patches that deal with IRQ sharing. [PATCH 0/5] pci-assign: Host IRQ sharing suppport + some fixes and cleanups http://thread.gmane.org/gmane.comp.emulators.kvm.devel/64601 [PATCH v3 0/4] KVM & genirq: Enable adaptive IRQ sharing for passed-through devices http://thread.gmane.org/gmane.linux.kernel/1076440 [PATCH 0/2] Small KVM device assignment cleanups http://thread.gmane.org/gmane.comp.emulators.kvm.devel/64515 What do I need to do to apply these patches to my system? The server I'm working on is running Proxmox 1.8 with upgraded 2.6.35-1-pve kernel (previously 2.6.32-4-pve) and qemu-kvm 0.14.1. Do I need to upgrade to a newer kernel, or upgrade qemu-kvm (e.g. 0.15.0), or both? The problem that I'm hoping to solve is an IRQ conflict. The Intel DQ67SW motherboard only has 1 PCI slot and no BIOS support for assigning IRQs. KVM PCI passthrough only works with the nousb kernel parameter, otherwise the ehci_hcd:usb1 conflicts with the PCI's assigned IRQ 16. This is a problem because I also need to USB passthrough a dongle required by the software (in WinXP guest). Thanks for any pointers, Mick -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html --------------------------------------------------------------------- Intel Technology Poland sp. z o.o. z siedziba w Gdansku ul. Slowackiego 173 80-298 Gdansk Sad Rejonowy Gdansk Polnoc w Gdansku, VII Wydzial Gospodarczy Krajowego Rejestru Sadowego, numer KRS 101882 NIP 957-07-52-316 Kapital zakladowy 200.000 zl This e-mail and any attachments may contain confidential material for the sole use of the intended recipient(s). Any review or distribution by others is strictly prohibited. If you are not the intended recipient, please contact the sender and delete all copies. -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
