From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753535Ab1ASHTu (ORCPT ); Wed, 19 Jan 2011 02:19:50 -0500 Received: from mail.skyhub.de ([78.46.96.112]:33775 "EHLO mail.skyhub.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753305Ab1ASHTt (ORCPT ); Wed, 19 Jan 2011 02:19:49 -0500 Date: Wed, 19 Jan 2011 08:19:44 +0100 From: Borislav Petkov To: Konrad Rzeszutek Wilk Cc: Joerg Roedel , Greg KH , Borislav Petkov , linux-kernel@vger.kernel.org, stable@kernel.org, Borislav Petkov , "H. Peter Anvin" Subject: Re: [PATCH 1/3] x86-32: Separate 1:1 pagetables from swapper_pg_dir Message-ID: <20110119071944.GD13799@liondog.tnic> Mail-Followup-To: Borislav Petkov , Konrad Rzeszutek Wilk , Joerg Roedel , Greg KH , Borislav Petkov , linux-kernel@vger.kernel.org, stable@kernel.org, Borislav Petkov , "H. Peter Anvin" References: <20101022162038.GA10343@kroah.com> <1289483775-17632-2-git-send-email-joerg.roedel@amd.com> <20110119003908.GB7609@dumpdata.com> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline In-Reply-To: <20110119003908.GB7609@dumpdata.com> User-Agent: Mutt/1.5.20 (2009-06-14) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Tue, Jan 18, 2011 at 07:39:08PM -0500, Konrad Rzeszutek Wilk wrote: > On Thu, Nov 11, 2010 at 02:56:13PM +0100, Joerg Roedel wrote: [..] > > -v2: switch to swapper_pg_dir right after entering start_secondary() so > > that we are able to access percpu data which might not be mapped in the > > trampoline page table. > > You also might want to look at the regression this patch caused when it > was introduced. Mainly this fix: > 805e3f495057aa5307ad4e3d6dc7073d4733c691 I think you mean the regression _this_ b40827fa7268fda8a62490728a61c2856f33830b patch caused, which is not in -stable anyway. -- Regards/Gruss, Boris.