Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755323AbaDXKh2 (ORCPT ); Thu, 24 Apr 2014 06:37:28 -0400 Received: from cam-admin0.cambridge.arm.com ([217.140.96.50]:59775 "EHLO cam-admin0.cambridge.arm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753035AbaDXKhZ (ORCPT ); Thu, 24 Apr 2014 06:37:25 -0400 Date: Thu, 24 Apr 2014 11:36:39 +0100 From: Will Deacon To: Steve Capper Cc: "linux@arm.linux.org.uk" , "akpm@linux-foundation.org" , Catalin Marinas , "robherring2@gmail.com" , "linux-mm@kvack.org" , "linux-kernel@vger.kernel.org" , "linux-arm-kernel@lists.infradead.org" , "gerald.schaefer@de.ibm.com" Subject: Re: [PATCH V2 0/5] Huge pages for short descriptors on ARM Message-ID: <20140424103639.GC19564@arm.com> References: <1397648803-15961-1-git-send-email-steve.capper@linaro.org> <20140424102229.GA28014@linaro.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20140424102229.GA28014@linaro.org> 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 Hi Steve, On Thu, Apr 24, 2014 at 11:22:29AM +0100, Steve Capper wrote: > On Wed, Apr 16, 2014 at 12:46:38PM +0100, Steve Capper wrote: > Just a ping on this... > > I would really like to get huge page support for short descriptors on > ARM merged as I've been carrying around these patches for a long time. > > Recently I've had no issues raised about the code. The patches have > been tested and found to be both beneficial to system performance and > stable. > > There are two parts to the series, the first patch is a core mm/ patch > that introduces some huge_pte_ helper functions that allows for a much > simpler ARM (without LPAE) implementation. The second part is the > actual arch/arm code. > > I'm not sure how to proceed with these patches. I was thinking that > they could be picked up into linux-next? If that sounds reasonable; > Andrew, would you like to take the mm/ patch and Russell could you > please take the arch/arm patches? > > Also, I was hoping to get these into 3.16. Are there any objections to > that? Who is asking for this code? We already support hugepages for LPAE systems, so this would be targetting what? A9? I'm reluctant to add ~400 lines of subtle, low-level mm code to arch/arm/ if it doesn't have any active users. I guess I'm after some commitment that this is (a) useful to somebody and (b) going to be tested regularly, otherwise it will go the way of things like big-endian, where we end up carrying around code which is broken more often than not (although big-endian is more self-contained). Will -- 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/