From: Jan Kiszka Subject: KVM: Windows 64-bit troubles with user space irqchip Date: Tue, 01 Feb 2011 19:02:03 +0100 Message-ID: <4D484A9B.9040604@siemens.com> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-15 Content-Transfer-Encoding: 7bit To: kvm , qemu-devel Return-path: Received: from david.siemens.de ([192.35.17.14]:20722 "EHLO david.siemens.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751477Ab1BASCI (ORCPT ); Tue, 1 Feb 2011 13:02:08 -0500 Sender: kvm-owner@vger.kernel.org List-ID: 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? Jan PS: Looks like they boot fine without CONFIG_IOTHREAD (over upstream). -- Siemens AG, Corporate Technology, CT T DE IT 1 Corporate Competence Center Embedded Linux