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=-6.8 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI, NICE_REPLY_A,SPF_HELO_NONE,SPF_PASS 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 4C9B0C35257 for ; Wed, 16 Sep 2020 23:20:27 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id B415522210 for ; Wed, 16 Sep 2020 23:20:26 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=kernel.org header.i=@kernel.org header.b="GGy3cWrY" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org B415522210 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=linux-foundation.org Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=owner-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix) id D7CCE900020; Wed, 16 Sep 2020 19:20:25 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id D05FE90001E; Wed, 16 Sep 2020 19:20:25 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id BCDA5900020; Wed, 16 Sep 2020 19:20:25 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0102.hostedemail.com [216.40.44.102]) by kanga.kvack.org (Postfix) with ESMTP id A0A0990001E for ; Wed, 16 Sep 2020 19:20:25 -0400 (EDT) Received: from smtpin25.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay02.hostedemail.com (Postfix) with ESMTP id 52D3D362C for ; Wed, 16 Sep 2020 23:20:25 +0000 (UTC) X-FDA: 77270495610.25.curve09_5b0e7972711d Received: from filter.hostedemail.com (10.5.16.251.rfc1918.com [10.5.16.251]) by smtpin25.hostedemail.com (Postfix) with ESMTP id 1D0821804E3A0 for ; Wed, 16 Sep 2020 23:20:25 +0000 (UTC) X-HE-Tag: curve09_5b0e7972711d X-Filterd-Recvd-Size: 3240 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by imf04.hostedemail.com (Postfix) with ESMTP for ; Wed, 16 Sep 2020 23:20:24 +0000 (UTC) Received: from X1 (unknown [67.22.170.76]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id AA81722205; Wed, 16 Sep 2020 23:20:21 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1600298423; bh=g39pvrmQ7hfk10VvG24PcSf7yUXQxh3QrCaIs2OFPxw=; h=Date:From:To:Cc:Subject:In-Reply-To:References:From; b=GGy3cWrY1KWygiIV+LN8jdTlPMczqnmnOowS6kdzNzT02rztNefpmWOud0sB5DuhW tYPB2wewkh27YeY5ELsjeG6otz7U7l9BXGGjwZ40yc/FJb39YCYRFP4SKYro0qWLdA 08KKQW84Cld8I364URHf5f0fJMPvSvi2987Kgz9w= Date: Wed, 16 Sep 2020 16:20:20 -0700 From: Andrew Morton To: Mike Rapoport Cc: Alexander Viro , Andy Lutomirski , Arnd Bergmann , Borislav Petkov , Catalin Marinas , Christopher Lameter , Dan Williams , Dave Hansen , David Hildenbrand , Elena Reshetova , "H. Peter Anvin" , Idan Yaniv , Ingo Molnar , James Bottomley , "Kirill A. Shutemov" , Matthew Wilcox , Mark Rutland , Mike Rapoport , Michael Kerrisk , Palmer Dabbelt , Paul Walmsley , Peter Zijlstra , Thomas Gleixner , Tycho Andersen , Will Deacon , linux-api@vger.kernel.org, linux-arch@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-fsdevel@vger.kernel.org, linux-mm@kvack.org, linux-kernel@vger.kernel.org, linux-nvdimm@lists.01.org, linux-riscv@lists.infradead.org, x86@kernel.org Subject: Re: [PATCH v5 0/5] mm: introduce memfd_secret system call to create "secret" memory areas Message-Id: <20200916162020.0d68c2bd6711024cfcaa8bd7@linux-foundation.org> In-Reply-To: <20200916073539.3552-1-rppt@kernel.org> References: <20200916073539.3552-1-rppt@kernel.org> X-Mailer: Sylpheed 3.5.1 (GTK+ 2.24.32; x86_64-pc-linux-gnu) Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit X-Rspamd-Queue-Id: 1D0821804E3A0 X-Spamd-Result: default: False [0.00 / 100.00] X-Rspamd-Server: rspam03 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 Wed, 16 Sep 2020 10:35:34 +0300 Mike Rapoport wrote: > This is an implementation of "secret" mappings backed by a file descriptor. > I've dropped the boot time reservation patch for now as it is not strictly > required for the basic usage and can be easily added later either with or > without CMA. It seems early days for this, especially as regards reviewer buyin. But I'll toss it in there to get it some additional testing. A test suite in tools/testging/selftests/ would be helpful, especially for arch maintainers. I assume that user-facing manpage alterations are planned?