From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-qk0-f200.google.com (mail-qk0-f200.google.com [209.85.220.200]) by kanga.kvack.org (Postfix) with ESMTP id 6A7A16B0003 for ; Tue, 17 Jul 2018 09:18:50 -0400 (EDT) Received: by mail-qk0-f200.google.com with SMTP id e3-v6so741126qkj.17 for ; Tue, 17 Jul 2018 06:18:50 -0700 (PDT) Received: from mx1.redhat.com (mx3-rdu2.redhat.com. [66.187.233.73]) by mx.google.com with ESMTPS id z19-v6si1070734qvj.60.2018.07.17.06.18.49 for (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Tue, 17 Jul 2018 06:18:49 -0700 (PDT) From: 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> Sender: owner-linux-mm@kvack.org List-ID: 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 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