From mboxrd@z Thu Jan 1 00:00:00 1970 From: Gleb Natapov Subject: Re: CPU hotplug add seems broken Date: Mon, 11 Jan 2010 12:24:34 +0200 Message-ID: <20100111102434.GG7549@redhat.com> References: <5e93dcec1001080235r6b3de506q8b2ba132fa1ff52c@mail.gmail.com> <20100109193011.GA25426@defiant.freesoftware> <20100110063911.GG4905@redhat.com> <5e93dcec1001100033tdb930eqcaf48a36ee36b335@mail.gmail.com> <20100110084353.GI4905@redhat.com> <5e93dcec1001110124l38d35ef7y4e92aa8b74aa810a@mail.gmail.com> <4B4AFC09.3090909@redhat.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Cc: Ryota Ozaki , dbareiro@gmx.net, kvm@vger.kernel.org To: Avi Kivity Return-path: Received: from mx1.redhat.com ([209.132.183.28]:18219 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752773Ab0AKKYi (ORCPT ); Mon, 11 Jan 2010 05:24:38 -0500 Content-Disposition: inline In-Reply-To: <4B4AFC09.3090909@redhat.com> Sender: kvm-owner@vger.kernel.org List-ID: On Mon, Jan 11, 2010 at 12:23:05PM +0200, Avi Kivity wrote: > On 01/11/2010 11:24 AM, Ryota Ozaki wrote: > > > >>The problem is that there is no standard > >>way to hotplug CPUs in a PC. Linux implements the way UNISYS happen to do > >>it, but no other system do it like that. Windows implements it > >>differently and in the way that conflicts with Linux, so you can't > >>have working Linux implementation and pass Microsoft SVVP test at the > >>same time for instance. > >Could I ask you what's the difference between the two implementations? > >Don't we have a possibility to have different implementations in qemu-kvm > >(and SeaBIOS)? > > IMO we should stick with the unisys-derived implementation, port it > to SeaBIOS, and write a Windows driver for it. It has the advantage > of having support in Linux, and of being somewhat tested. > That cool, but SVVP complains. -- Gleb.