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 Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by smtp.lore.kernel.org (Postfix) with ESMTP id 80A5EC433FE for ; Wed, 9 Mar 2022 16:21:07 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id CBD4A8D0002; Wed, 9 Mar 2022 11:21:06 -0500 (EST) Received: by kanga.kvack.org (Postfix, from userid 40) id C436E8D0001; Wed, 9 Mar 2022 11:21:06 -0500 (EST) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id AE5048D0002; Wed, 9 Mar 2022 11:21:06 -0500 (EST) X-Delivered-To: linux-mm@kvack.org Received: from relay.hostedemail.com (relay.hostedemail.com [64.99.140.25]) by kanga.kvack.org (Postfix) with ESMTP id 9FBDD8D0001 for ; Wed, 9 Mar 2022 11:21:06 -0500 (EST) Received: from smtpin05.hostedemail.com (a10.router.float.18 [10.200.18.1]) by unirelay08.hostedemail.com (Postfix) with ESMTP id 6E18A20FDF for ; Wed, 9 Mar 2022 16:21:06 +0000 (UTC) X-FDA: 79225362132.05.B8B58F3 Received: from mxout04.lancloud.ru (mxout04.lancloud.ru [45.84.86.114]) by imf13.hostedemail.com (Postfix) with ESMTP id 406DF2012F for ; Wed, 9 Mar 2022 16:20:45 +0000 (UTC) Received: from LanCloud DKIM-Filter: OpenDKIM Filter v2.11.0 mxout04.lancloud.ru B5CC8209A0EF Received: from LanCloud Received: from LanCloud Received: from LanCloud Subject: Re: [PATCH] docs/kernel-parameters: update description of mem= To: Mike Rapoport , Jonathan Corbet CC: Andrew Morton , "Maciej W. Rozycki" , Mike Rapoport , Tiezhu Yang , Thomas Bogendoerfer , , , , References: <20220309122446.1118738-1-rppt@kernel.org> From: Sergey Shtylyov Organization: Open Mobile Platform Message-ID: Date: Wed, 9 Mar 2022 19:20:42 +0300 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:78.0) Gecko/20100101 Thunderbird/78.10.1 MIME-Version: 1.0 In-Reply-To: <20220309122446.1118738-1-rppt@kernel.org> Content-Type: text/plain; charset="utf-8" Content-Language: en-US Content-Transfer-Encoding: 7bit X-Originating-IP: [192.168.11.198] X-ClientProxiedBy: LFEXT02.lancloud.ru (fd00:f066::142) To LFEX1907.lancloud.ru (fd00:f066::207) X-Rspamd-Server: rspam11 X-Rspamd-Queue-Id: 406DF2012F X-Rspam-User: Authentication-Results: imf13.hostedemail.com; dkim=none; dmarc=temperror reason="query timed out" header.from=omp.ru (policy=temperror); spf=pass (imf13.hostedemail.com: domain of s.shtylyov@omp.ru designates 45.84.86.114 as permitted sender) smtp.mailfrom=s.shtylyov@omp.ru X-Stat-Signature: prto1wnfa149hm5w6aps19y4ds8jburd X-HE-Tag: 1646842845-849235 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: On 3/9/22 3:24 PM, Mike Rapoport wrote: > From: Mike Rapoport > > The existing description of mem= does not cover all the cases and > differences between how architectures treat it. > > Extend the description to match the code. > > Signed-off-by: Mike Rapoport > --- > > This is in a way a followup for the discussion of mem= usage on MIPS: > > https://lore.kernel.org/all/1646461289-31992-1-git-send-email-yangtiezhu@loongson.cn > > .../admin-guide/kernel-parameters.txt | 20 +++++++++++++++++++ > 1 file changed, 20 insertions(+) > > diff --git a/Documentation/admin-guide/kernel-parameters.txt b/Documentation/admin-guide/kernel-parameters.txt > index f5a27f067db9..f3597841a031 100644 > --- a/Documentation/admin-guide/kernel-parameters.txt > +++ b/Documentation/admin-guide/kernel-parameters.txt > @@ -2834,6 +2834,15 @@ > 2 when the kernel is not able to see the whole system memory; > 3 memory that lies after 'mem=' boundary is excluded from > the hypervisor, then assigned to KVM guests. > + 4 to limit the memory available for kdump kernel. > + > + [ARC,MICROBLAZE] - the limit applies only to low memory, > + high memory is not affected. > + > + [ARM64] - only limits memory covered by the linear > + mapping. The NOMAP regions are not affected. > + > + [HEXAGON] - must be use Used? > to set the memory size, there is What? :-) [...] MBR, Sergey