From mboxrd@z Thu Jan 1 00:00:00 1970 From: Martin Wolf Subject: Re: vga passthrough // questions about pci passthrough Date: Fri, 28 Sep 2012 07:15:20 +0200 Message-ID: <50653268.4050103@adiumentum.com> References: <50064D87.2090809@adiumentum.com> <50068134.4060306@siemens.com> <5006A72D.3080408@adiumentum.com> <5006ADF3.9030304@adiumentum.com> <1342621405.2229.194.camel@bling.home> <50081FBC.7060208@adiumentum.com> <1342714590.3142.4.camel@ul30vt> <5064364E.7050508@adiumentum.com> <1348768586.2320.204.camel@ul30vt.home> <50649E5C.6020808@adiumentum.com> <1348773491.2320.217.camel@ul30vt.home> <5064AB09.9030402@adiumentum.com> <1348778811.2320.248.camel@ul30vt.home> Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: QUOTED-PRINTABLE Cc: kvm@vger.kernel.org To: Alex Williamson Return-path: Received: from mail.andre-duewel.de ([178.63.55.43]:56703 "EHLO mail.andre-duewel.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750753Ab2I1FP1 (ORCPT ); Fri, 28 Sep 2012 01:15:27 -0400 In-Reply-To: <1348778811.2320.248.camel@ul30vt.home> Sender: kvm-owner@vger.kernel.org List-ID: about your question if the bsod also happens on shutdown, i have to deny it. it just happens after an msi message in kernel log on=20 rebooting the vm. (but the msi message is also there on initial boot where the system=20 works perfectly) in my oppinion at the moment when the video driver is loaded. Am 27.09.2012 22:46, schrieb Alex Williamson: > On Thu, 2012-09-27 at 21:37 +0200, Martin Wolf wrote: >> when will that support be implemented? >> how do i enable debug support for the "pci-assign" driver? > I believe the target is qemu 1.3 for q35. Debug is enabled by > uncommenting the DEVICE_ASSIGNMENT_DEBUG define in hw/kvm/pci-assign.= c > (or hw/device-assignment.c on qemu-kvm in an older tree) and rebuildi= ng. > Thanks, > > Alex > >> Am 27.09.2012 21:18, schrieb Alex Williamson: >>> On Thu, 2012-09-27 at 20:43 +0200, Martin Wolf wrote: >>>> thank you for the information. >>>> >>>> i will try what you mentioned... >>>> do you have some additional information about rebooting a VM with = a >>>> passed through videocard? >>>> (amd / ati 7870) >>> I don't. Is the bsod on reboot only or does it also happen on shut= down? >>> There's a slim chance it could be traced by enabling debug in the >>> pci-assign driver and analyzing what the guest driver is trying to = do. >>> I'm hoping that q35 chipset support might resolve some issues with = vga >>> assignment as it exposes a topology that looks a bit more like one = that >>> a driver would expect on physical hardware. Thanks, >>> >>> Alex >>> >>> -- >>> To unsubscribe from this list: send the line "unsubscribe kvm" in >>> the body of a message to majordomo@vger.kernel.org >>> More majordomo info at http://vger.kernel.org/majordomo-info.html >> > > --=20 Adiumentum GmbH Gf. Martin Wolf Banderbacherstra=C3=9Fe 76 90513 Zirndorf 0911 / 9601470 mwolf@adiumentum.com