From mboxrd@z Thu Jan 1 00:00:00 1970 From: Avi Kivity Subject: Re: kvm-18 breaks Cisco VPN on WinXP SP1 Date: Tue, 10 Apr 2007 09:37:30 +0300 Message-ID: <461B30AA.3010302@qumranet.com> References: <460885B2.7080907@nt.net> <4608C397.30708@qumranet.com> <460A1560.6060506@qumranet.com> <460B63CF.1010209@qumranet.com> <460CB2B8.3070809@qumranet.com> <4610C408.9010502@qumranet.com> <4613D240.2000003@qumranet.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Cc: kvm-devel-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org To: Leslie Mann Return-path: In-reply-to: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: kvm-devel-bounces-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org Errors-To: kvm-devel-bounces-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org List-Id: kvm.vger.kernel.org Leslie Mann wrote: > Avi: > > Leslie Mann writes: > > >> Fails. >> >> I notice that a lot of new code is related to pio. Seeing that it locks up >> when >> the VPN starts using the network, I sprinkled some printk's around and have >> discovered that we enter an long running (endless?) loop in kvm_run. >> run->exit_reason is KVM_EXIT_IO, to the naive observer (me) it would appear >> that >> an issue exists somewhere inside of handle_io(). >> >> > > FYI, a switch to rtl8139 from the default NE2000 nic has "cured" the problem > under both kvm-18 and kvm-svn. > That's a good indication the problem is with handling I/O instructions. I have an image that exhibits similar behavior (but on Windows chkdsk on boot) so I'll try debugging that. If that does not work I'll try to send you debug patches. -- Do not meddle in the internals of kernels, for they are subtle and quick to panic. ------------------------------------------------------------------------- Take Surveys. Earn Cash. Influence the Future of IT Join SourceForge.net's Techsay panel and you'll get the chance to share your opinions on IT & business topics through brief surveys-and earn cash http://www.techsay.com/default.php?page=join.php&p=sourceforge&CID=DEVDEV