From mboxrd@z Thu Jan 1 00:00:00 1970 From: Khaled El Mously Subject: Re: kvm unhandled exit 4400 Date: Wed, 3 Nov 2010 15:44:10 -0400 Message-ID: <20101103194410.GA3004@fuzzdora.tablet> References: <20101102210100.GB13929@wuzzy.fuzzbuzz.org> <4CD12C28.20208@gmail.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Cc: kvm@vger.kernel.org To: haishan Return-path: Received: from mail-gy0-f174.google.com ([209.85.160.174]:55077 "EHLO mail-gy0-f174.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752921Ab0KCToj (ORCPT ); Wed, 3 Nov 2010 15:44:39 -0400 Received: by gyh4 with SMTP id 4so778439gyh.19 for ; Wed, 03 Nov 2010 12:44:39 -0700 (PDT) Content-Disposition: inline In-Reply-To: <4CD12C28.20208@gmail.com> Sender: kvm-owner@vger.kernel.org List-ID: The host kernel is on Ubuntu: 2.6.32-25-generic The guest kernel is 2.6.34-something. I have figured out what the problem is. When I first attempted to run kvm, it said access to /dev/kvm was denied. So I did "chmod o+rw /dev/kvm" and reloaded. It stopped complaining about permissions, but apparently it won't work unless you have the +x as well (i.e. need to do "chmod o+rwx /dev/kvm" ). Perhaps that should be documented somewhere. Or maybe kvm should specifically check for that and complain early. Thanks for your input haishan. On Wed, Nov 03, 2010 at 05:32:24PM +0800, haishan wrote: > Khaled El Mously wrote: > >There seems to be a problem kvm-booting a 32-bit (Fedora) machine on a 32-bit Intel Q9450 (Ubuntu) machine. > > > >The error displayed is: > > > >kvm: unhandled exit 4400 > >kvm_run returned -22 > > > >I've checked google, the kvm website, forums, FAQs and IRC channel. > > > >Anyone know what causes this? > > Your version of host kernel kvm had not implemented the > APIC-ACCESS VM EXITS emulation, update the kernel > should solve the problem. > > > Regards > Shan Hai > > >-- > >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 >