From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:57404) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1fFduH-000850-SV for qemu-devel@nongnu.org; Mon, 07 May 2018 07:02:14 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1fFduC-0006Cw-89 for qemu-devel@nongnu.org; Mon, 07 May 2018 07:02:13 -0400 Received: from mx3-rdu2.redhat.com ([66.187.233.73]:54616 helo=mx1.redhat.com) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1fFduC-0006CR-2w for qemu-devel@nongnu.org; Mon, 07 May 2018 07:02:08 -0400 Received: from smtp.corp.redhat.com (int-mx04.intmail.prod.int.rdu2.redhat.com [10.11.54.4]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id 9953F8182D0D for ; Mon, 7 May 2018 11:02:07 +0000 (UTC) References: <1525453270-23074-1-git-send-email-thuth@redhat.com> <87wowgyqj8.fsf@dusky.pond.sub.org> <32c5b770-3bbf-e9d2-ea78-023986ba828f@redhat.com> <87sh73yk3z.fsf@dusky.pond.sub.org> From: Paolo Bonzini Message-ID: Date: Mon, 7 May 2018 13:02:02 +0200 MIME-Version: 1.0 In-Reply-To: <87sh73yk3z.fsf@dusky.pond.sub.org> Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 7bit Subject: Re: [Qemu-devel] [PATCH v2 0/5] Removal of deprecated -no-kvm* options List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: Markus Armbruster , Thomas Huth Cc: qemu-devel@nongnu.org On 07/05/2018 09:56, Markus Armbruster wrote: >>>> I'm not that sure anymore about -no-kvm. It can come in handy for >>>> distros (*cough* RHEL *cough) that only ship a qemu-kvm binary with >>>> default accelerator "-machine accel=kvm:tcg". >>>> >>>> Yeah, "-accel tcg" is only a few characters later, but it is a >>>> relatively recent addition. >>> >>> 2012 is "relatively recent" in the alternate RHEL universe, perhaps :) >> >> That was the "-machine accel=tcg", but Paolo was rather talking about >> "-accel tcg", which has been added last year. Yes, we've got three (!) >> ways of dealing with accelerators now: "-M accel=", "-accel" and >> "-enable-kvm + -no-kvm". We're very userfriendly, aren't we? ;-) > > Ugh. Apparently, vl.c still is a playground without adult supervision. I'm not sure I get it... "-accel" was added in order to provide accelerator options. If anything, "-machine accel" (added back in 2010) is the one that makes little sense these days. Paolo