From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752363AbbERGtB (ORCPT ); Mon, 18 May 2015 02:49:01 -0400 Received: from mail-wi0-f172.google.com ([209.85.212.172]:33085 "EHLO mail-wi0-f172.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752194AbbERGsx (ORCPT ); Mon, 18 May 2015 02:48:53 -0400 Date: Mon, 18 May 2015 08:48:48 +0200 From: Ingo Molnar To: Josh Triplett Cc: linux-kernel@vger.kernel.org Subject: Re: [PATCH] x86: Align jump targets to 1 byte boundaries Message-ID: <20150518064848.GB12869@gmail.com> References: <20150514181707.GA21728@gmail.com> <20150515154540.GA12500@x> <20150517053429.GA17002@gmail.com> <20150517191844.GA8326@x> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20150517191844.GA8326@x> User-Agent: Mutt/1.5.23 (2014-03-12) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org * Josh Triplett wrote: > > > Also, you've only applied these to 64-bit; could you please > > > apply them to both 32-bit and 64-bit, since many embedded > > > systems aiming for small code size use 32-bit? (Unless 32-bit > > > already defaults to these.) > > > > First things first - 64-bit is getting far more testing these days > > than 32-bit. > > What testing do you want to see on these patches before applying > them to 32-bit as well? Not much specific testing is needed I think, basically just 'no regressions for a few weeks'. These alignment changes should be pretty safe, since -Os (via CONFIG_CC_OPTIMIZE_FOR_SIZE=y) already enabled these. Thanks, Ingo