From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-2.5 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_PASS,USER_AGENT_MUTT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id A1E6DC282E3 for ; Wed, 24 Apr 2019 12:22:00 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 710F0218FD for ; Wed, 24 Apr 2019 12:22:00 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729729AbfDXMV7 (ORCPT ); Wed, 24 Apr 2019 08:21:59 -0400 Received: from outbound-smtp16.blacknight.com ([46.22.139.233]:39943 "EHLO outbound-smtp16.blacknight.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729670AbfDXMV7 (ORCPT ); Wed, 24 Apr 2019 08:21:59 -0400 Received: from mail.blacknight.com (pemlinmail05.blacknight.ie [81.17.254.26]) by outbound-smtp16.blacknight.com (Postfix) with ESMTPS id 915701C1CFD for ; Wed, 24 Apr 2019 13:21:57 +0100 (IST) Received: (qmail 20196 invoked from network); 24 Apr 2019 12:21:57 -0000 Received: from unknown (HELO techsingularity.net) (mgorman@techsingularity.net@[37.228.225.79]) by 81.17.254.9 with ESMTPSA (AES256-SHA encrypted, authenticated); 24 Apr 2019 12:21:57 -0000 Date: Wed, 24 Apr 2019 13:21:56 +0100 From: Mel Gorman To: Mike Rapoport Cc: Christoph Hellwig , Matthew Wilcox , Andrew Morton , Mikulas Patocka , James Bottomley , linux-parisc@vger.kernel.org, linux-mm@kvack.org, Vlastimil Babka , LKML , linux-arch@vger.kernel.org Subject: Re: DISCONTIGMEM is deprecated Message-ID: <20190424122155.GT18914@techsingularity.net> References: <20190419094335.GJ18914@techsingularity.net> <20190419140521.GI7751@bombadil.infradead.org> <20190421063859.GA19926@rapoport-lnx> <20190421132606.GJ7751@bombadil.infradead.org> <20190421211604.GN18914@techsingularity.net> <20190423071354.GB12114@infradead.org> <20190424113352.GA6278@rapoport-lnx> MIME-Version: 1.0 Content-Type: text/plain; charset=iso-8859-15 Content-Disposition: inline In-Reply-To: <20190424113352.GA6278@rapoport-lnx> User-Agent: Mutt/1.10.1 (2018-07-13) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Wed, Apr 24, 2019 at 02:33:53PM +0300, Mike Rapoport wrote: > On Tue, Apr 23, 2019 at 12:13:54AM -0700, Christoph Hellwig wrote: > > On Sun, Apr 21, 2019 at 10:16:04PM +0100, Mel Gorman wrote: > > > 32-bit NUMA systems should be non-existent in practice. The last NUMA > > > system I'm aware of that was both NUMA and 32-bit only died somewhere > > > between 2004 and 2007. If someone is running a 64-bit capable system in > > > 32-bit mode with NUMA, they really are just punishing themselves for fun. > > > > Can we mark it as BROKEN to see if someone shouts and then remove it > > a year or two down the road? Or just kill it off now.. > > How about making SPARSEMEM default for x86-32? > While an improvement, I tend to agree with Christoph that marking it BROKEN as a patch on top of this makes sense and wait to see who, if anyone, screams. If it's quiet for long enough then we can remove it entirely. -- Mel Gorman SUSE Labs