From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Yang, Sheng" Subject: Re: kvm: Unknown error 524, Fail to handle apic access vmexit Date: Wed, 16 Jul 2008 11:26:37 +0800 Message-ID: <200807161126.37615.sheng.yang@intel.com> References: <20080715124202.GA3001@deprecation.cyrius.com> <487CBFEB.4050409@qumranet.com> Mime-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit Cc: Dor Laor , Martin Michlmayr To: kvm@vger.kernel.org Return-path: Received: from mga09.intel.com ([134.134.136.24]:33109 "EHLO mga09.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751661AbYGPDZH (ORCPT ); Tue, 15 Jul 2008 23:25:07 -0400 In-Reply-To: <487CBFEB.4050409@qumranet.com> Content-Disposition: inline Sender: kvm-owner@vger.kernel.org List-ID: On Tuesday 15 July 2008 23:19:07 Dor Laor wrote: > Martin Michlmayr wrote: > > I installed a Windows XP SP2 guest on a Debian x86_64 host The > > installation itself went fine but kvm aborts when when XP starts > > during "Windows XP Setup". XP mentions something with > > intelppm.sys (see the attached screenshot) and kvm says: > > > > kvm_run: Unknown error 524 > > kvm_run returned -524 > > It's a FlexPriority bug, while it should be solved, you can disable > it by using kvm-intel module parameter. > Dor, are you sure it's a FlexPriority bug? If you look at where is the complain, you would find there is a result of emulate_instruction(). And you will find a clearly "emulation failed (mmio) rip 7cb3d000 ff ff 8d 85" in the bug tracker Martin metioned above the "Fail to handle apic access vmexit! Offset is 0xf0"(Spurious Interrupt Vector Register). I don't think "ff ff 8d 85" is a vaild opcode for that case. Maybe it's a regression? The last report is long ago... Hi Martin, can you show more dmesg here? And if it can be reproduce stable? Thanks. -- regards Yang, Sheng > > In dmesg, I see: > > > > [ 8891.352876] Fail to handle apic access vmexit! Offset is 0xf0 > > > > This happens with kvm 70, and kernel 2.6.25 and 2.6.26-rc9. > > > > Someone else reported a similar problem before but there was no > > response: > > http://www.mail-archive.com/kvm-devel@lists.sourceforge.net/msg12 > >111.html > > > > > > > > ----------------------------------------------------------------- > >------- > > -- > 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