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=-0.8 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_PASS 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 E5B51ECDFB1 for ; Tue, 17 Jul 2018 13:18:51 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 9B12220C0E for ; Tue, 17 Jul 2018 13:18:51 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 9B12220C0E Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=redhat.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1731686AbeGQNv2 (ORCPT ); Tue, 17 Jul 2018 09:51:28 -0400 Received: from mx3-rdu2.redhat.com ([66.187.233.73]:56824 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1729671AbeGQNv2 (ORCPT ); Tue, 17 Jul 2018 09:51:28 -0400 Received: from smtp.corp.redhat.com (int-mx03.intmail.prod.int.rdu2.redhat.com [10.11.54.3]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id 1947877885; Tue, 17 Jul 2018 13:18:49 +0000 (UTC) Received: from MiWiFi-R3L-srv.redhat.com (ovpn-8-16.pek2.redhat.com [10.72.8.16]) by smtp.corp.redhat.com (Postfix) with ESMTP id E06FB111C481; Tue, 17 Jul 2018 13:18:45 +0000 (UTC) From: Baoquan He To: mhocko@kernel.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org Cc: akpm@linux-foundation.org, corbet@lwn.net, linux-doc@vger.kernel.org, Baoquan He Subject: [PATCH] mm/page_alloc: Deprecate kernelcore=nn and movable_core= Date: Tue, 17 Jul 2018 21:18:37 +0800 Message-Id: <20180717131837.18411-1-bhe@redhat.com> X-Scanned-By: MIMEDefang 2.78 on 10.11.54.3 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.11.55.1]); Tue, 17 Jul 2018 13:18:49 +0000 (UTC) X-Greylist: inspected by milter-greylist-4.5.16 (mx1.redhat.com [10.11.55.1]); Tue, 17 Jul 2018 13:18:49 +0000 (UTC) for IP:'10.11.54.3' DOMAIN:'int-mx03.intmail.prod.int.rdu2.redhat.com' HELO:'smtp.corp.redhat.com' FROM:'bhe@redhat.com' RCPT:'' Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org We can still use 'kernelcore=mirror' or 'movable_node' for the usage of hotplug and movable zone. If somebody shows up with a valid usecase we can reconsider. Suggested-by: Michal Hocko Signed-off-by: Baoquan He --- Documentation/admin-guide/kernel-parameters.txt | 2 ++ mm/page_alloc.c | 3 +++ 2 files changed, 5 insertions(+) diff --git a/Documentation/admin-guide/kernel-parameters.txt b/Documentation/admin-guide/kernel-parameters.txt index efc7aa7a0670..1e22c49866a2 100644 --- a/Documentation/admin-guide/kernel-parameters.txt +++ b/Documentation/admin-guide/kernel-parameters.txt @@ -1855,6 +1855,7 @@ keepinitrd [HW,ARM] kernelcore= [KNL,X86,IA-64,PPC] + [Usage of kernelcore=nn[KMGTPE] | nn% is deprecated] Format: nn[KMGTPE] | nn% | "mirror" This parameter specifies the amount of memory usable by the kernel for non-movable allocations. The requested @@ -2395,6 +2396,7 @@ reporting absolute coordinates, such as tablets movablecore= [KNL,X86,IA-64,PPC] + [Deprecated] Format: nn[KMGTPE] | nn% This parameter is the complement to kernelcore=, it specifies the amount of memory used for migratable diff --git a/mm/page_alloc.c b/mm/page_alloc.c index 1521100f1e63..86cf05f48b5f 100644 --- a/mm/page_alloc.c +++ b/mm/page_alloc.c @@ -6899,6 +6899,8 @@ static int __init cmdline_parse_kernelcore(char *p) return 0; } + pr_warn("Only kernelcore=mirror supported, " + "usage of kernelcore=nn[KMGTPE]|nn%% is deprecated.\n"); return cmdline_parse_core(p, &required_kernelcore, &required_kernelcore_percent); } @@ -6909,6 +6911,7 @@ static int __init cmdline_parse_kernelcore(char *p) */ static int __init cmdline_parse_movablecore(char *p) { + pr_warn("Option movablecore= is deprecated.\n"); return cmdline_parse_core(p, &required_movablecore, &required_movablecore_percent); } -- 2.13.6