From: Jan Kiszka Subject: Re: [Qemu-devel] KVM: Windows 64-bit troubles with user space irqchip Date: Wed, 02 Feb 2011 13:50:02 +0100 Message-ID: <4D4952FA.8020300@siemens.com> References: <4D484A9B.9040604@siemens.com> <20110202115537.GE14984@redhat.com> <4D4946F7.1070702@siemens.com> <20110202123532.GF14984@redhat.com> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Cc: kvm , qemu-devel To: Gleb Natapov Return-path: Received: from david.siemens.de ([192.35.17.14]:32239 "EHLO david.siemens.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751125Ab1BBMuU (ORCPT ); Wed, 2 Feb 2011 07:50:20 -0500 In-Reply-To: <20110202123532.GF14984@redhat.com> Sender: kvm-owner@vger.kernel.org List-ID: On 2011-02-02 13:35, Gleb Natapov wrote: > On Wed, Feb 02, 2011 at 12:58:47PM +0100, Jan Kiszka wrote: >> On 2011-02-02 12:55, Gleb Natapov wrote: >>> On Tue, Feb 01, 2011 at 07:02:03PM +0100, Jan Kiszka wrote: >>>> Hi, >>>> >>>> testing my KVM patches, I noticed that none of the 64-bit Windows >>>> versions I have around (early Win7 & 2003 server) boot in KVM mode when >>>> using 2 or more VCPUs and the user space irqchip. This applies to both >>>> upstream KVM and qemu-kvm, with our without any of my current patches. A >>>> subtle difference in the APIC/IOAPIC emulation? >>>> >>>> Can anyone confirm this? >>>> >>> Just booted windows7-64 on qemu-kvm -no-kvm-irqchip + latest kernel here. >> >> Strange. -smp 2? >> > Opps, -smp 1. With -smp 2 it boot almost completely and then hangs. Ah, good (or not good). With Windows 2003 Server, I actually get a Blue Screen (Stop 0x000000b8). Jan -- Siemens AG, Corporate Technology, CT T DE IT 1 Corporate Competence Center Embedded Linux