Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1757216AbYAZSXp (ORCPT ); Sat, 26 Jan 2008 13:23:45 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1753789AbYAZSXh (ORCPT ); Sat, 26 Jan 2008 13:23:37 -0500 Received: from bzq-179-150-194.static.bezeqint.net ([212.179.150.194]:60583 "EHLO il.qumranet.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756512AbYAZSX2 (ORCPT ); Sat, 26 Jan 2008 13:23:28 -0500 Message-ID: <479B7A8F.8070308@qumranet.com> Date: Sat, 26 Jan 2008 20:23:11 +0200 From: Avi Kivity User-Agent: Thunderbird 2.0.0.9 (X11/20071115) MIME-Version: 1.0 To: Joerg Roedel CC: "Nakajima, Jun" , kvm-devel@lists.sourceforge.net, linux-kernel@vger.kernel.org Subject: Re: [kvm-devel] [PATCH 3/8] SVM: add module parameter to disable NestedPaging References: <1201294393-22613-1-git-send-email-joerg.roedel@amd.com> <1201294393-22613-4-git-send-email-joerg.roedel@amd.com> <2D848F959C03D945A84E9EDE7F7BFE4274021D@orsmsx424.amr.corp.intel.com> <20080126072556.GB21476@8bytes.org> In-Reply-To: <20080126072556.GB21476@8bytes.org> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 779 Lines: 19 Joerg Roedel wrote: > Generally I see no problem with it. But at least for NPT I don't see a > reason why someone should want to disable it on a VM basis (as far as it > works stable). Avi, what do you think? > Unless there is a real-life workload that benefits from npt=0, I see no reason to have per-vm npt control. The module parameter is helpful, for to isolate npt problems and for development, but I don't see a need for users to fiddle with it. -- Any sufficiently difficult bug is indistinguishable from a feature. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/