Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1759045Ab3HMSKM (ORCPT ); Tue, 13 Aug 2013 14:10:12 -0400 Received: from terminus.zytor.com ([198.137.202.10]:35267 "EHLO mail.zytor.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1758403Ab3HMSKI (ORCPT ); Tue, 13 Aug 2013 14:10:08 -0400 Message-ID: <520A7651.8020301@zytor.com> Date: Tue, 13 Aug 2013 11:09:21 -0700 From: "H. Peter Anvin" User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:17.0) Gecko/20130625 Thunderbird/17.0.7 MIME-Version: 1.0 To: Andi Kleen CC: linux-kernel@vger.kernel.org, x86@kernel.org, mingo@kernel.org, torvalds@linux-foundation.org Subject: Re: Re-tune x86 uaccess code for PREEMPT_VOLUNTARY References: <1376089460-5459-1-git-send-email-andi@firstfloor.org> In-Reply-To: <1376089460-5459-1-git-send-email-andi@firstfloor.org> X-Enigmail-Version: 1.5.2 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 638 Lines: 20 On 08/09/2013 04:04 PM, Andi Kleen wrote: > The x86 user access functions (*_user) were originally very well tuned, > with partial inline code and other optimizations. > > Then over time various new checks -- particularly the sleep checks for > a voluntary preempt kernel -- destroyed a lot of the tunings > Hi Andi, Are you going to respin this patchset to address the feedback? -hpa -- 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/