From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jan Kiszka Subject: Re: [PATCH] cpu hotplug issue Date: Thu, 21 Jul 2011 14:39:58 +0200 Message-ID: <4E281E1E.4070908@siemens.com> References: <20110720083507.GS2400@redhat.com> <20110721113342.GB3044@redhat.com> <4E281090.9070300@siemens.com> <20110721115118.GD3044@redhat.com> <4E2813AE.7090102@siemens.com> <4E2818FB.5070302@redhat.com> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Cc: Gleb Natapov , Vasilis Liaskovitis , "kvm@vger.kernel.org" , Lucas Meneghel Rodrigues , Anthony Liguori To: Avi Kivity Return-path: Received: from goliath.siemens.de ([192.35.17.28]:15339 "EHLO goliath.siemens.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752064Ab1GUMkE (ORCPT ); Thu, 21 Jul 2011 08:40:04 -0400 In-Reply-To: <4E2818FB.5070302@redhat.com> Sender: kvm-owner@vger.kernel.org List-ID: On 2011-07-21 14:18, Avi Kivity wrote: > On 07/21/2011 02:55 PM, Jan Kiszka wrote: >>>> >>> CPU hotplug for Linux suppose to be easy (with allow_hotplug patch >>> applied). But we have two bugs currently. One is that ACPI interrupt >> >> I bet we have multiple bugs for quite a while now, which accelerated bit >> rotting even further. >> > > kvm-autotest to the rescue! CPU hotplug primarily suffers from lacking integration with QEMU (hotpluggable CPU bus, qdev'ified CPUs to enable "device_add/del cpu", and all that upstream). That needs to be finally solved, then regression testing will indeed be very important. Jan -- Siemens AG, Corporate Technology, CT T DE IT 1 Corporate Competence Center Embedded Linux