From mboxrd@z Thu Jan 1 00:00:00 1970 From: Paolo Bonzini Subject: Re: [PATCH v2 0/6] target-i386: Make most CPU models work with "enforce" out of the box Date: Tue, 26 Aug 2014 14:56:21 +0200 Message-ID: <53FC83F5.2090905@redhat.com> References: <1408999550-20321-1-git-send-email-ehabkost@redhat.com> Mime-Version: 1.0 Content-Type: text/plain; charset=iso-8859-15 Content-Transfer-Encoding: 7bit Cc: kvm@vger.kernel.org, Aurelien Jarno To: Eduardo Habkost , qemu-devel@nongnu.org, =?ISO-8859-15?Q?Andreas_F=E4rber?= Return-path: Received: from mx1.redhat.com ([209.132.183.28]:2331 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1757473AbaHZM4i (ORCPT ); Tue, 26 Aug 2014 08:56:38 -0400 In-Reply-To: <1408999550-20321-1-git-send-email-ehabkost@redhat.com> Sender: kvm-owner@vger.kernel.org List-ID: Il 25/08/2014 22:45, Eduardo Habkost ha scritto: > > TCG users expect the default CPU model to contain most TCG-supported features > (and it makes sense). See, for example, commit > f1e00a9cf326acc1f2386a72525af8859852e1df. It doesn't though (SMAP is the most egregious omission, and probably the main reason why people use QEMU TCG these days), and it raises the question of backwards-compatibility of qemu64---should we disable TCG features in old machine types? Probably yes, but we've never done that. Paolo