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=-7.5 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,NICE_REPLY_A,SPF_HELO_NONE,SPF_PASS,USER_AGENT_SANE_1 autolearn=no 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 B845AC433DB for ; Tue, 23 Mar 2021 13:45:15 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id 46FDD6197F for ; Tue, 23 Mar 2021 13:45:15 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 46FDD6197F Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=redhat.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=owner-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix) id 6F5CE6B00EA; Tue, 23 Mar 2021 09:45:13 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id 6CDFF6B00EC; Tue, 23 Mar 2021 09:45:13 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 521A16B00F0; Tue, 23 Mar 2021 09:45:13 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0051.hostedemail.com [216.40.44.51]) by kanga.kvack.org (Postfix) with ESMTP id 35ED96B00EA for ; Tue, 23 Mar 2021 09:45:13 -0400 (EDT) Received: from smtpin10.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay01.hostedemail.com (Postfix) with ESMTP id DBF38180AD830 for ; Tue, 23 Mar 2021 13:45:12 +0000 (UTC) X-FDA: 77951260464.10.04B17F3 Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [216.205.24.124]) by imf18.hostedemail.com (Postfix) with ESMTP id D13E32000263 for ; Tue, 23 Mar 2021 13:45:11 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1616507111; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=u4IuFNs7G9eHpxIxEjFpymhZdMA5gfvx/fmGXZsBykM=; b=gmtkjEj/hDXSGK3U6R99vvYIRcefQqfkaiWPcJtcz5dVKLEl3vtrF5dKnrDdiFeunl3IUd m+azS1jscrSOxZq4RqKcGXixmkjosL1EYaq8dji2i+/XRh8KWSBwuNEEwVroF6iu4e6mNy sOu7pwDcbY0k9eRabluwyevgUmi4Q5U= Received: from mimecast-mx01.redhat.com (mimecast-mx01.redhat.com [209.132.183.4]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-107-Dk5BZGuYOrOa75SCrQVwhA-1; Tue, 23 Mar 2021 09:45:09 -0400 X-MC-Unique: Dk5BZGuYOrOa75SCrQVwhA-1 Received: from smtp.corp.redhat.com (int-mx03.intmail.prod.int.phx2.redhat.com [10.5.11.13]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id 6483084BA4D; Tue, 23 Mar 2021 13:44:42 +0000 (UTC) Received: from [10.36.115.54] (ovpn-115-54.ams2.redhat.com [10.36.115.54]) by smtp.corp.redhat.com (Postfix) with ESMTP id 4AF1C86586; Tue, 23 Mar 2021 13:44:21 +0000 (UTC) Subject: Re: [PATCH RFC 0/3] drivers/char: remove /dev/kmem for good To: Greg Kroah-Hartman Cc: linux-kernel@vger.kernel.org, linux-mm@kvack.org, "Alexander A. Klimov" , Alexander Viro , Alexandre Belloni , Andrew Lunn , Andrew Morton , Andrey Zhizhikin , Arnd Bergmann , Benjamin Herrenschmidt , Brian Cain , Christian Borntraeger , Christophe Leroy , Chris Zankel , Corentin Labbe , "David S. Miller" , "Eric W. Biederman" , Geert Uytterhoeven , Gerald Schaefer , Greentime Hu , Gregory Clement , Heiko Carstens , Helge Deller , Hillf Danton , huang ying , Ingo Molnar , Ivan Kokshaysky , "James E.J. Bottomley" , Jiaxun Yang , Jonas Bonn , Jonathan Corbet , Kairui Song , Krzysztof Kozlowski , Kuninori Morimoto , Linus Torvalds , Linux API , Liviu Dudau , Lorenzo Pieralisi , Luc Van Oostenryck , Luis Chamberlain , Matthew Wilcox , Matt Turner , Max Filippov , Michael Ellerman , Michal Hocko , Mike Rapoport , Mikulas Patocka , Minchan Kim , Niklas Schnelle , Oleksiy Avramchenko , Palmer Dabbelt , Paul Mackerras , "Pavel Machek (CIP)" , Pavel Machek , "Peter Zijlstra (Intel)" , Pierre Morel , Randy Dunlap , Richard Henderson , Rich Felker , Robert Richter , Rob Herring , Russell King , Sam Ravnborg , Sebastian Andrzej Siewior , Sebastian Hesselbarth , Stafford Horne , Stefan Kristiansson , Steven Rostedt , Sudeep Holla , Theodore Dubois , Thomas Bogendoerfer , Thomas Gleixner , Vasily Gorbik , Viresh Kumar , William Cohen , Xiaoming Ni , Yoshinori Sato References: <20210319143452.25948-1-david@redhat.com> From: David Hildenbrand Organization: Red Hat GmbH Message-ID: <8bd3a6cc-02a9-38e7-ddd2-22f49c133e25@redhat.com> Date: Tue, 23 Mar 2021 14:44:20 +0100 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:78.0) Gecko/20100101 Thunderbird/78.8.0 MIME-Version: 1.0 In-Reply-To: X-Scanned-By: MIMEDefang 2.79 on 10.5.11.13 Authentication-Results: relay.mimecast.com; auth=pass smtp.auth=CUSA124A263 smtp.mailfrom=david@redhat.com X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: en-US Content-Transfer-Encoding: 7bit X-Stat-Signature: sygef8xitsi5e9z8nhpxqcr4pfssk1rg X-Rspamd-Server: rspam01 X-Rspamd-Queue-Id: D13E32000263 Received-SPF: none (redhat.com>: No applicable sender policy available) receiver=imf18; identity=mailfrom; envelope-from=""; helo=us-smtp-delivery-124.mimecast.com; client-ip=216.205.24.124 X-HE-DKIM-Result: pass/pass X-HE-Tag: 1616507111-135249 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 23.03.21 14:16, Greg Kroah-Hartman wrote: > On Fri, Mar 19, 2021 at 03:34:49PM +0100, David Hildenbrand wrote: >> Let's start a discussion if /dev/kmem is worth keeping around and >> fixing/maintaining or if we should just remove it now for good. >> >> More details / findings in patch #1. Patch #2 and #3 perform minor cleanups >> based on removed /dev/kmem support. >> >> Only compile-tested on x86-64 -- good enough for discussing the general >> topic (RFC). > > I'll gladly take this in my char/misc tree for now, to show up in > linux-next to get some testing to see if anyone complains. > > Let me know if that will help out. Sure! I'll resend as v1 this week (also removing vwrite() from nommu code in patch #3). Thanks -- Thanks, David / dhildenb