From mboxrd@z Thu Jan 1 00:00:00 1970 From: Avi Kivity Subject: Re: kvm guest for 486 sx Date: Tue, 07 Jul 2009 16:23:18 +0300 Message-ID: <4A534C46.3040603@redhat.com> References: <4A525759.6090404@pagestation.com> <4A531B44.90803@redhat.com> <4A533A32.7000505@pagestation.com> <4A533CE7.2080706@redhat.com> <4A53414F.3070300@pagestation.com> <4A53448A.7050002@redhat.com> <4A534A8F.2030702@pagestation.com> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Cc: kvm@vger.kernel.org To: Jerry Geis Return-path: Received: from mx2.redhat.com ([66.187.237.31]:46492 "EHLO mx2.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755930AbZGGNU5 (ORCPT ); Tue, 7 Jul 2009 09:20:57 -0400 In-Reply-To: <4A534A8F.2030702@pagestation.com> Sender: kvm-owner@vger.kernel.org List-ID: On 07/07/2009 04:15 PM, Jerry Geis wrote: >>> Notice FPU indicates yes and I requested -fpu on the command line. >> >> I think it detects the host fpu as a 487 coprocessor. Anything in >> dmesg about it? Note there's no fpu in the flags: line. >> >> That's a kvm kernel bug. >> >>> also is this a 486 as it says AMD? >> >> You can override it if you like, -cpu 486,vendor=AuthenticAMD (I think). >> > > Sorry - I thought the " -cpu 486,-fpu " was the way to turn off the fpu. > I 'm trying to emulute a 486 sx that has no fpu. I thought so too, but in fact it emulates a 486sx+487. We can make it emulate a 486sx without a 487, but that will take a kernel patch. -- error compiling committee.c: too many arguments to function