From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932107AbXAOI51 (ORCPT ); Mon, 15 Jan 2007 03:57:27 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S932110AbXAOI51 (ORCPT ); Mon, 15 Jan 2007 03:57:27 -0500 Received: from public.id2-vpn.continvity.gns.novell.com ([195.33.99.129]:20889 "EHLO public.id2-vpn.continvity.gns.novell.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932107AbXAOI50 (ORCPT ); Mon, 15 Jan 2007 03:57:26 -0500 Message-Id: <45AB5065.76E4.0078.0@novell.com> X-Mailer: Novell GroupWise Internet Agent 7.0.1 Date: Mon, 15 Jan 2007 08:59:01 +0000 From: "Jan Beulich" To: "Jeremy Fitzhardinge" , "Andrew Morton" Cc: , , "Andi Kleen" , "Rusty Russell" , "Chris Wright" , , "Zachary Amsden" Subject: Re: [Xen-devel] [patch 07/20] XEN-paravirt: paravirt shared kernel pmd flag References: <20070113014539.408244126@goop.org> <20070113014647.796412179@goop.org> In-Reply-To: <20070113014647.796412179@goop.org> Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Content-Disposition: inline Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org >>> Jeremy Fitzhardinge 13.01.07 02:45 >>> >Xen does not allow guests to have the kernel pmd shared between page >tables, so parameterize pgtable.c to allow both modes of operation. I don't think the change to vmalloc_sync_all in this patch is necessary - the mechanism exists solely for dealing with modular users of the die notifier in the NMI case. Since there's no NMI visible to guests, I don't think the mechanism is necessary; it could even be completely circumvented for paravirtual guests. Jan