Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S937151AbXHIAba (ORCPT ); Wed, 8 Aug 2007 20:31:30 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1765544AbXHIAbV (ORCPT ); Wed, 8 Aug 2007 20:31:21 -0400 Received: from fk-out-0910.google.com ([209.85.128.188]:42105 "EHLO fk-out-0910.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1765542AbXHIAbU (ORCPT ); Wed, 8 Aug 2007 20:31:20 -0400 DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=beta; h=received:message-id:date:from:to:subject:cc:in-reply-to:mime-version:content-type:content-transfer-encoding:content-disposition:references; b=TzbBon6V0P9qiAOT/0xcuatE1TAR0Sn50Ex4y+8KsiSU9wnnJqsMnDKHmsp/91d97xdxYWbw41l01tfIqk227I1ua2TIM3HvRnBx/EDG54MO4fVMuCRaUURcJ14e48Yi2r8nPrwcmgSHcYlGNcdaYHtefptqqaqr0tiXzEiyZJw= Message-ID: <5d6222a80708081731y4e20e0a4oedc27e0766283b6a@mail.gmail.com> Date: Wed, 8 Aug 2007 21:31:17 -0300 From: "Glauber de Oliveira Costa" To: "Nakajima, Jun" Subject: Re: Introducing paravirt_ops for x86_64 Cc: "Glauber de Oliveira Costa" , linux-kernel@vger.kernel.org, lguest@ozlabs.org, virtualization@lists.linux-foundation.org, chrisw@sous-sol.org, anthony@codemonkey.ws, akpm@linux-foundation.org, mingo@elte.hu In-Reply-To: <97D612E30E1F88419025B06CB4CF1BE10326E924@scsmsx412.amr.corp.intel.com> MIME-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Content-Disposition: inline References: <5d6222a80708080758t1b937d0ej14c5e60ac23a20c5@mail.gmail.com> <97D612E30E1F88419025B06CB4CF1BE10326E924@scsmsx412.amr.corp.intel.com> Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1022 Lines: 27 On 8/8/07, Nakajima, Jun wrote: > > So, unless I'm very wrong, it only makes sense to talk about not > > supporting large pages in the guest level. But it is not a > > paravirt_ops problem. > > Some MMU-related PV techiniques (including Xen, and direct paging mode > for Xen/KVM) need to write-protect page tables, avoiding to use 2MB > pages when mapping page tables. Looks like you did not, and that > exaplains why the patches are missing the relevant (many) paravirt_ops > in include/asm-x86_64/pgalloc.h, for example, compared with the i386 > tree. I see. I'll address this in the next version of the patch. -- Glauber de Oliveira Costa. "Free as in Freedom" http://glommer.net "The less confident you are, the more serious you have to act." - 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/