From mboxrd@z Thu Jan 1 00:00:00 1970 From: Adhyas Avasthi Subject: Issues with getting PCI pass-through to work Date: Sun, 30 May 2010 18:19:20 -0700 Message-ID: Mime-Version: 1.0 Content-Type: text/plain; charset=windows-1252 Content-Transfer-Encoding: QUOTED-PRINTABLE To: kvm@vger.kernel.org Return-path: Received: from mail-iw0-f174.google.com ([209.85.214.174]:61417 "EHLO mail-iw0-f174.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755227Ab0EaB0i convert rfc822-to-8bit (ORCPT ); Sun, 30 May 2010 21:26:38 -0400 Received: by iwn6 with SMTP id 6so394982iwn.19 for ; Sun, 30 May 2010 18:26:38 -0700 (PDT) Sender: kvm-owner@vger.kernel.org List-ID: I have a PCI WLAN controller that I wish to pass-through to the standard linux-img VM (downloaded from qemu website). When I try "qemu-kvm -pcidevice host=3D0c:00.0,name=3Dabcd linux-0.2.im= g" The VM does boot up but does not see the device. On the command prompt, I see the following message: =46ailed to assign irq for "abcd": Operation not supported Perhaps you are assigning a device that shares an IRQ with another devi= ce? I want to know what does this message exactly mean? Is PCI pass-through having the requirement of reconfiguring the IRQ of my host devices before I can pass them through? Can I configure qemu-kvm somehow to emulate the IRQ (and other registers) instead of trying to pass-through the IRQ etc? BTW, my box has VT and VT-d enabled in BIOS. -- Adhyas ******************************************************************** Two types have compatible type if their types are the same. =A0 =A0=97 ANSI C Standard, 3.1.2.6. ********************************************************************