From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:38680) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1aLq1h-0005CM-OE for qemu-devel@nongnu.org; Wed, 20 Jan 2016 05:30:10 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1aLq1c-00050r-Nh for qemu-devel@nongnu.org; Wed, 20 Jan 2016 05:30:09 -0500 Received: from mx1.redhat.com ([209.132.183.28]:49851) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1aLq1c-00050c-IX for qemu-devel@nongnu.org; Wed, 20 Jan 2016 05:30:04 -0500 Message-ID: <1453285801.11804.55.camel@redhat.com> From: Gerd Hoffmann Date: Wed, 20 Jan 2016 11:30:01 +0100 In-Reply-To: References: Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable Mime-Version: 1.0 Subject: Re: [Qemu-devel] Regarding Intel IGD passthru support for QEMU/KVM List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: Raghavan Santhanam Cc: qemu-devel@nongnu.org Hi, > Based on the Intel IGD passthru support that has been added to > Qemu/Xen code base, is there any way to use/reuse the same logic > currently to have a successful passthru of an Intel IGD with Qemu/KVM > on a Linux host(Ubuntu x86_64) or will that require some more > work in addition to what Xen code based already has for the IGD > passthru? If you feel a bit adventurous you can try whenever current git master (or 4.5-rc1 when Linus releases it next weekend) as guest kernel works for you. Recent linux kernels seem to not require the host bridge tweaks any more. A patch to recognize the qemu q35 south bridge has been added in the merge window. So using the q35 machine type + vfio passthrough without any special igd tweaks has a fair chance to work. opregion support isn't there yet, so don't expect laptop panels work correctly. cheers, Gerd