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 79C24C433EF for ; Tue, 12 Apr 2022 20:41:14 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id 076CC6B0072; Tue, 12 Apr 2022 16:41:14 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id 025EE6B0073; Tue, 12 Apr 2022 16:41:13 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id E56EE6B0074; Tue, 12 Apr 2022 16:41:13 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0019.hostedemail.com [216.40.44.19]) by kanga.kvack.org (Postfix) with ESMTP id D2CCE6B0072 for ; Tue, 12 Apr 2022 16:41:13 -0400 (EDT) Received: from smtpin22.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay04.hostedemail.com (Postfix) with ESMTP id 78981A89AC for ; Tue, 12 Apr 2022 20:41:13 +0000 (UTC) X-FDA: 79349396826.22.1744531 Received: from ams.source.kernel.org (ams.source.kernel.org [145.40.68.75]) by imf20.hostedemail.com (Postfix) with ESMTP id DD6991C0002 for ; Tue, 12 Apr 2022 20:41:12 +0000 (UTC) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ams.source.kernel.org (Postfix) with ESMTPS id 15860B8202F; Tue, 12 Apr 2022 20:41:11 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 2A248C385A1; Tue, 12 Apr 2022 20:41:09 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linux-foundation.org; s=korg; t=1649796069; bh=YBvi7BvRSFhTBMnNDQglW7gASkP9HGdcSPqceH085lI=; h=Date:From:To:Cc:Subject:In-Reply-To:References:From; b=aeILG2DvCifC4VQbXqYyZL6IYHEItaTTEt7soKXalXltcIDglD7Pna4yAKKMsn/qG lKQ8QtJofwT1FT1yzZo8Mi9p+ZqJxF5eoa1ZHH3WyZe0DYWjM71Bi+BbiVwJa8bDmW jgI2XdYfWONemapxaloIcZy26WSTHGHRN+kxBy4o= Date: Tue, 12 Apr 2022 13:41:08 -0700 From: Andrew Morton To: Axel Rasmussen Cc: Alexander Viro , "Dmitry V . Levin" , Gleb Fotengauer-Malinovskiy , Mike Kravetz , Nadav Amit , Peter Xu , Shuah Khan , linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org, linux-kselftest@vger.kernel.org Subject: Re: [PATCH 1/2] userfaultfd: add /dev/userfaultfd for fine grained access control Message-Id: <20220412134108.b95b6c92183b3d9c1dd11b47@linux-foundation.org> In-Reply-To: <20220412202942.386981-1-axelrasmussen@google.com> References: <20220412202942.386981-1-axelrasmussen@google.com> X-Mailer: Sylpheed 3.7.0 (GTK+ 2.24.33; x86_64-pc-linux-gnu) Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Authentication-Results: imf20.hostedemail.com; dkim=pass header.d=linux-foundation.org header.s=korg header.b=aeILG2Dv; spf=pass (imf20.hostedemail.com: domain of akpm@linux-foundation.org designates 145.40.68.75 as permitted sender) smtp.mailfrom=akpm@linux-foundation.org; dmarc=none X-Rspam-User: X-Rspamd-Server: rspam10 X-Rspamd-Queue-Id: DD6991C0002 X-Stat-Signature: ms6nh4c3965asu6iiz735a9ps9g1ywgq X-HE-Tag: 1649796072-113139 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 Tue, 12 Apr 2022 13:29:41 -0700 Axel Rasmussen wrote: > To achieve this, add a /dev/userfaultfd misc device. An update to $(grep -rl userfault Documentation/) seems appropriate?