Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1750788Ab2JHGnq (ORCPT ); Mon, 8 Oct 2012 02:43:46 -0400 Received: from nat28.tlf.novell.com ([130.57.49.28]:37163 "EHLO nat28.tlf.novell.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751260Ab2JHGnp convert rfc822-to-8bit (ORCPT ); Mon, 8 Oct 2012 02:43:45 -0400 Message-Id: <5072842D020000780008D495@nat28.tlf.novell.com> X-Mailer: Novell GroupWise Internet Agent 12.0.0 Date: Mon, 08 Oct 2012 07:43:41 +0100 From: "Jan Beulich" To: Cc: , , , , , , Subject: Re: [PATCH 1/3] x86, mm: Include the entire kernel memory map in trampoline_pgd References: <1349269157-25956-1-git-send-email-matt@console-pimps.org> <1349269157-25956-2-git-send-email-matt@console-pimps.org> <506C4C3A020000780008D041@nat28.tlf.novell.com> <506DFAD8.5060701@zytor.com> <506E9CDC020000780009FD13@nat28.tlf.novell.com> <506F0A90.7020106@zytor.com> <50714881020000780008D43E@nat28.tlf.novell.com> In-Reply-To: Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 8BIT Content-Disposition: inline Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 926 Lines: 25 >>> "H. Peter Anvin" 10/07/12 12:27 PM >>> >Actually, no, because we may need to double-map in the low address space per discussion at LPC. Now this I don't follow (due to lack of context), but it would of course be relevant for determining the need eventual further adjustments to the patch we're discussing here. Jan >Jan Beulich wrote: > >>>On 10/04/2012 11:39 PM, Jan Beulich wrote: >>I understand all that, but here we're talking about a true 1:1 mapping >>(i.e. in the lower half of the virtual address space), as opposed to >>the >>direct mapping (in the upper half). We can obviously use all of the >>lower >>half for this purpose. -- 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/