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=-8.5 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE, SPF_PASS,USER_AGENT_MUTT autolearn=ham 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 9E99AC4646B for ; Wed, 26 Jun 2019 06:11:56 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 75F912133F for ; Wed, 26 Jun 2019 06:11:56 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="ds3ptPyX" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 75F912133F Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=kernel.org Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20170209; h=Sender: Content-Transfer-Encoding:Content-Type:Cc:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:In-Reply-To:MIME-Version:References: Message-ID:Subject:To:From:Date:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=D258UZxXeJhOVR2Et3qM6zKKX1IzrhqlZi77PwdnNt8=; b=ds3ptPyXevUcGT RPk4rWIujxyvwW1DuKxk4PCDF14J/4yrRoHcv6OJqXKom9pjBT9BZa+0VHo3LEXzwt9eSoS2g1+M8 vwAFnNXJsPDn9Jcoicg7Z5+2cvc/W+MvyOg9SESlVHIEzP6j9mB5tuQm1LO0cmyJhYnl+hxX2a3vL T/O9yctRywOnr5HprEbZ3WhE0BUSAg3NwIfsnmfM1zLKWlC55Jr9xFWlnVMnteMO4s37F0d8WosxH GLzHFzV23s3Y6YUR2kMyTALKqLatx0EsFbarCHdCHvCDrNWZ2s0p2wwwHcmyRf+RT2cZox5f2ZlAW uxqh9W+GxNUMhvZj/dtA==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.92 #3 (Red Hat Linux)) id 1hg19k-0005f8-Jy; Wed, 26 Jun 2019 06:11:44 +0000 Received: from mx2.suse.de ([195.135.220.15] helo=mx1.suse.de) by bombadil.infradead.org with esmtps (Exim 4.92 #3 (Red Hat Linux)) id 1hg19f-0005ds-RY for linux-arm-kernel@lists.infradead.org; Wed, 26 Jun 2019 06:11:41 +0000 X-Virus-Scanned: by amavisd-new at test-mx.suse.de Received: from relay2.suse.de (unknown [195.135.220.254]) by mx1.suse.de (Postfix) with ESMTP id 96E90AF25; Wed, 26 Jun 2019 06:11:36 +0000 (UTC) Date: Wed, 26 Jun 2019 08:11:34 +0200 From: Michal Hocko To: Hoan Tran OS Subject: Re: [PATCH 1/5] mm: Enable CONFIG_NODES_SPAN_OTHER_NODES by default for NUMA Message-ID: <20190626061134.GD17798@dhcp22.suse.cz> References: <1561501810-25163-1-git-send-email-Hoan@os.amperecomputing.com> <1561501810-25163-2-git-send-email-Hoan@os.amperecomputing.com> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <1561501810-25163-2-git-send-email-Hoan@os.amperecomputing.com> User-Agent: Mutt/1.10.1 (2018-07-13) X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20190625_231140_108615_74E21329 X-CRM114-Status: GOOD ( 18.67 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Catalin Marinas , Heiko Carstens , "open list:MEMORY MANAGEMENT" , Paul Mackerras , "H . Peter Anvin" , "sparclinux@vger.kernel.org" , Alexander Duyck , "linux-s390@vger.kernel.org" , Michael Ellerman , "x86@kernel.org" , Mike Rapoport , Christian Borntraeger , Ingo Molnar , Vlastimil Babka , Benjamin Herrenschmidt , Open Source Submission , Pavel Tatashin , Vasily Gorbik , Will Deacon , Borislav Petkov , Thomas Gleixner , "linux-arm-kernel@lists.infradead.org" , Oscar Salvador , "linux-kernel@vger.kernel.org" , Andrew Morton , "linuxppc-dev@lists.ozlabs.org" , "David S . Miller" Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org On Tue 25-06-19 22:30:24, Hoan Tran OS wrote: > This patch enables CONFIG_NODES_SPAN_OTHER_NODES by default > for NUMA. As some NUMA nodes have memory ranges that span other > nodes. Even though a pfn is valid and between a node's start and > end pfns, it may not reside on that node. Please describe the problem more thoroughly. What is the layout, what doesn't work with the default configuration and why do we need this particular fix rather than enabling of the config option for the specific HW. > > Signed-off-by: Hoan Tran > --- > mm/page_alloc.c | 2 +- > 1 file changed, 1 insertion(+), 1 deletion(-) > > diff --git a/mm/page_alloc.c b/mm/page_alloc.c > index d66bc8a..6335505 100644 > --- a/mm/page_alloc.c > +++ b/mm/page_alloc.c > @@ -1413,7 +1413,7 @@ int __meminit early_pfn_to_nid(unsigned long pfn) > } > #endif > > -#ifdef CONFIG_NODES_SPAN_OTHER_NODES > +#ifdef CONFIG_NUMA > /* Only safe to use early in boot when initialisation is single-threaded */ > static inline bool __meminit early_pfn_in_nid(unsigned long pfn, int node) > { > -- > 2.7.4 > -- Michal Hocko SUSE Labs _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel