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=-3.6 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, URIBL_BLOCKED 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 E38B0C43461 for ; Thu, 17 Sep 2020 05:46:27 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id 48AE12078D for ; Thu, 17 Sep 2020 05:46:27 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="bbKl9UWP" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 48AE12078D Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=gmail.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=owner-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix) id 9FCBD6B0055; Thu, 17 Sep 2020 01:46:25 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id 9ACCD6B005A; Thu, 17 Sep 2020 01:46:25 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 8EA656B005C; Thu, 17 Sep 2020 01:46:25 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0111.hostedemail.com [216.40.44.111]) by kanga.kvack.org (Postfix) with ESMTP id 79CF26B0055 for ; Thu, 17 Sep 2020 01:46:25 -0400 (EDT) Received: from smtpin08.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay02.hostedemail.com (Postfix) with ESMTP id 31F133630 for ; Thu, 17 Sep 2020 05:46:25 +0000 (UTC) X-FDA: 77271468330.08.shoe93_4d04ff527120 Received: from filter.hostedemail.com (10.5.16.251.rfc1918.com [10.5.16.251]) by smtpin08.hostedemail.com (Postfix) with ESMTP id 0B07F1819E623 for ; Thu, 17 Sep 2020 05:46:25 +0000 (UTC) X-HE-Tag: shoe93_4d04ff527120 X-Filterd-Recvd-Size: 5087 Received: from mail-oi1-f194.google.com (mail-oi1-f194.google.com [209.85.167.194]) by imf27.hostedemail.com (Postfix) with ESMTP for ; Thu, 17 Sep 2020 05:46:24 +0000 (UTC) Received: by mail-oi1-f194.google.com with SMTP id z26so1099509oih.12 for ; Wed, 16 Sep 2020 22:46:24 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=mime-version:references:in-reply-to:reply-to:from:date:message-id :subject:to:cc; bh=03zgBdOmJo+1h1F3YVTbbY3y6xnSeDHzXEapmphTwIw=; b=bbKl9UWPeRhmTphLackrhk80UEzUzcPTNe72QmMk7/fs5a/LxCxtV+mb6MSWQFVDmC F22yt5hvhiNFb2j/gFnw8yxBQviOrz2mlbiqk83dwMA7AkjqITFQd1eVdq1X39tqelCL VQYLiT8PHgFrLapRSXmMmT+MgfubVdogkhnR8iaU9CBQieW2dO0skkpZLwguhZi/JnBV GroqbGpDUZEjnODXLPHpOPwc0N7/cjNeafIH1QgpKVpeU6uH1eY/RuZkMDyTnjr9U7fb tviHseO3/70GTW4fSLc2vk/vqzCFhAHroNAVb0ANnf+lzN+TxeDA/upoZku1GEWDb8D1 7Ugg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:references:in-reply-to:reply-to :from:date:message-id:subject:to:cc; bh=03zgBdOmJo+1h1F3YVTbbY3y6xnSeDHzXEapmphTwIw=; b=Leihp0tVs5p79I95tPNTWhLisRG262h0C0/USr21CfJC/pxevrT5aviFxrtjWHfiPL Y+TMTyUJ5huDMbPmX0MuHVNP9sBgm9rFATUtbTjhtwpsywYZQJyfqL3csWIWSgBeEr95 YrXVPAbtLfd2iwSo2n2jBNMen81ZmB2xTfgcplPQQNRuuEe8h7+eVKg9M6/GZp+lZq1m g2dSUyK86CfsqBJAkZNrAPe/KLqpMiXhPpFXYSbvBhmidu16L3JZVyS1Nc3YedZquVbF Tuk9hW3b5UIIe+q0iXKCfq93dfUFvjdpfgVbFnf4dI2bvwDsPq+nvVYrDHw7n74fxP21 YUag== X-Gm-Message-State: AOAM533YOdBwC7HvLGgh/zVmQuzS/3J7f92Ny3tbv/MO3dZizK+TDby+ Asaf0An34GToZ3nMNvQDPXdvYJAytJBPF7WM5yg= X-Google-Smtp-Source: ABdhPJzQezUvckVK0wvtjtSXJuH78/qLicEZ94e9jzpjFRfX1+eKqEzksVrp0ORp5rdZVfo95r94sEe5o2dL6iEln5E= X-Received: by 2002:a54:458f:: with SMTP id z15mr3791761oib.148.1600321584018; Wed, 16 Sep 2020 22:46:24 -0700 (PDT) MIME-Version: 1.0 References: <20200916073539.3552-1-rppt@kernel.org> <20200916162020.0d68c2bd6711024cfcaa8bd7@linux-foundation.org> In-Reply-To: <20200916162020.0d68c2bd6711024cfcaa8bd7@linux-foundation.org> Reply-To: mtk.manpages@gmail.com From: "Michael Kerrisk (man-pages)" Date: Thu, 17 Sep 2020 07:46:12 +0200 Message-ID: Subject: Re: [PATCH v5 0/5] mm: introduce memfd_secret system call to create "secret" memory areas To: Andrew Morton Cc: Mike Rapoport , 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 , Palmer Dabbelt , Paul Walmsley , Peter Zijlstra , Thomas Gleixner , Tycho Andersen , Will Deacon , Linux API , linux-arch , linux-arm-kernel@lists.infradead.org, "linux-fsdevel@vger.kernel.org" , Linux-MM , lkml , linux-nvdimm@lists.01.org, linux-riscv@lists.infradead.org, "maintainer:X86 ARCHITECTURE (32-BIT AND 64-BIT)" Content-Type: text/plain; charset="UTF-8" X-Rspamd-Queue-Id: 0B07F1819E623 X-Spamd-Result: default: False [0.00 / 100.00] X-Rspamd-Server: rspam02 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 Thu, 17 Sep 2020 at 01:20, Andrew Morton wrote: > > 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? I was just about to write a mail into this thread when I saw this :-). So far, I don't think I saw a manual page patch. Mike, how about it? Thanks, Michael -- Michael Kerrisk Linux man-pages maintainer; http://www.kernel.org/doc/man-pages/ Linux/UNIX System Programming Training: http://man7.org/training/