From mboxrd@z Thu Jan 1 00:00:00 1970 From: Andre Przywara Subject: Re: Booting/installing WindowsNT Date: Tue, 4 May 2010 17:27:19 +0200 Message-ID: <4BE03CD7.8090105@amd.com> References: <4BDB44C2.7090204@msgid.tls.msk.ru> <4BDB4E58.50805@msgid.tls.msk.ru> <4BDD4E32.2080503@redhat.com> <4BDDA455.8090001@msgid.tls.msk.ru> <4BDE882F.5000009@amd.com> <4BDE8DF4.8070604@redhat.com> <4BDE9757.8090809@amd.com> <4BDF01CA.80505@msgid.tls.msk.ru> <4BDFE3A7.2050706@redhat.com> <4BE00E2A.2010901@amd.com> <4BE015BF.2010401@msgid.tls.msk.ru> Mime-Version: 1.0 Content-Type: text/plain; charset="ISO-8859-1"; format=flowed Content-Transfer-Encoding: 7bit Cc: Avi Kivity , KVM list To: Michael Tokarev Return-path: Received: from tx2ehsobe003.messaging.microsoft.com ([65.55.88.13]:55026 "EHLO TX2EHSOBE006.bigfish.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S933044Ab0EDP1i (ORCPT ); Tue, 4 May 2010 11:27:38 -0400 In-Reply-To: <4BE015BF.2010401@msgid.tls.msk.ru> Sender: kvm-owner@vger.kernel.org List-ID: Michael Tokarev wrote: > I've seen 3 variants here so far: > > 1. normal installation. It stops for a while after that kernel > message you mentioned. For several secodns, mabye even 20 > seconds. And after a while it continues. During all this > time the guest cpu usage is 100% like you describe (a tight > loop). This is what I call "working" - I never bothered to > think if that tight loop/pause is normal or not. This is > what happens for me with -cpu host. OK, I see that, too. > 2. with -cpu pentium it also displays that kernel message but > stops here without any cpu usage whatsoever. I waited for > some 40 minutes at one point (I just forgot I started it but > later on noticed there's a QEMU window floating around with > that NT kernel message on it and nothing happening). Agreed. It stucks in a sti;hlt;ret, obviously waiting in vain for an interrupt. Interestingly it works with -smp 2. Will further investigate. > 3. In all other cases so far it BSoDs with STOP 0x3E error > right before displaying that kernel message. MSDN talks about a mulitprocessor configuration error: http://msdn.microsoft.com/en-us/library/ms819006.aspx I suspected the offline CPUs in the mptable that confuse NT. But -smp 1,maxcpus=1 does not make a difference. I will try to dig deeper in this area. > So.. I'm not sure if it's confirmation or not :) I take this as one. Thanks for the clarification. Regards, Andre. -- Andre Przywara AMD-Operating System Research Center (OSRC), Dresden, Germany Tel: +49 351 488-3567-12