From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jan Kiszka Subject: Re: [PATCH] exit if we fail to initialize kvm Date: Wed, 29 Jul 2009 16:43:11 +0200 Message-ID: <4A705FFF.5060503@siemens.com> References: <1248814374-7953-1-git-send-email-glommer@redhat.com> <20090728212852.GY4776@poweredge.glommer> <4A7021AC.80403@siemens.com> <4A703767.6050301@redhat.com> <4A70406B.3050000@suse.de> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Cc: Avi Kivity , Glauber Costa , "kvm@vger.kernel.org" To: Alexander Graf Return-path: Received: from david.siemens.de ([192.35.17.14]:19065 "EHLO david.siemens.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750977AbZG2Ona (ORCPT ); Wed, 29 Jul 2009 10:43:30 -0400 In-Reply-To: <4A70406B.3050000@suse.de> Sender: kvm-owner@vger.kernel.org List-ID: Alexander Graf wrote: > Avi Kivity wrote: >> On 07/29/2009 01:17 PM, Jan Kiszka wrote: >>> I just wonder now if/when qemu-kvm will switch over to the >>> kvm-by-default-off policy of upstream? >>> >> That will surely inconvenience/surprise a lot of users. >> >> A migration path could be: >> >> - add -accel >> - start warning when -accel is not used, encouraging people to use -accel >> - time passes >> - switch default to tcg (maybe unless invoked with kvm in argv[0]) >> - time passes >> - remove warning >> > > I would prefer: > > - add -accel (default to kvm) > - give a message to use -accel tcg when the user wants tcg > - make -accel go kvm,kqemu,tcg in qemu upstream Upstream just dropped the behavior '-accel kqemu,tcg', so I'm not sure if this is desired to return (though I'm surely not comparing kvm to kqemu here). > - have distros / management tools decide which accel they like That's likely the key: explicit -accel. Jan -- Siemens AG, Corporate Technology, CT SE 2 Corporate Competence Center Embedded Linux