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=-5.2 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, URIBL_BLOCKED,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 318DEC433E6 for ; Mon, 22 Feb 2021 07:34:58 +0000 (UTC) Received: from ml01.01.org (ml01.01.org [198.145.21.10]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 751D364E4B for ; Mon, 22 Feb 2021 07:34:57 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 751D364E4B Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=srcf.ucam.org Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-nvdimm-bounces@lists.01.org Received: from ml01.vlan13.01.org (localhost [IPv6:::1]) by ml01.01.org (Postfix) with ESMTP id 26434100EBBDA; Sun, 21 Feb 2021 23:34:57 -0800 (PST) Received-SPF: Pass (mailfrom) identity=mailfrom; client-ip=176.126.240.207; helo=cavan.codon.org.uk; envelope-from=mjg59@codon.org.uk; receiver= Received: from cavan.codon.org.uk (cavan.codon.org.uk [176.126.240.207]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits)) (No client certificate requested) by ml01.01.org (Postfix) with ESMTPS id 7FAA9100EBBC1 for ; Sun, 21 Feb 2021 23:34:54 -0800 (PST) Received: by cavan.codon.org.uk (Postfix, from userid 1000) id 2065540A21; Mon, 22 Feb 2021 07:34:52 +0000 (UTC) Date: Mon, 22 Feb 2021 07:34:52 +0000 From: Matthew Garrett To: Mike Rapoport Subject: Re: [PATCH v17 08/10] PM: hibernate: disable when there are active secretmem users Message-ID: <20210222073452.GA30403@codon.org.uk> References: <20210208084920.2884-1-rppt@kernel.org> <20210208084920.2884-9-rppt@kernel.org> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <20210208084920.2884-9-rppt@kernel.org> User-Agent: Mutt/1.10.1 (2018-07-13) Message-ID-Hash: 5OPSJ624RCM7UTBIYPWVZKVBGZIZRTAU X-Message-ID-Hash: 5OPSJ624RCM7UTBIYPWVZKVBGZIZRTAU X-MailFrom: mjg59@codon.org.uk X-Mailman-Rule-Hits: nonmember-moderation X-Mailman-Rule-Misses: dmarc-mitigation; no-senders; approved; emergency; loop; banned-address; member-moderation CC: Andrew Morton , Alexander Viro , Andy Lutomirski , Arnd Bergmann , Borislav Petkov , Catalin Marinas , Christopher Lameter , Dave Hansen , David Hildenbrand , Elena Reshetova , "H. Peter Anvin" , Ingo Molnar , James Bottomley , "Kirill A. Shutemov" , Matthew Wilcox , Mark Rutland , Michal Hocko , Mike Rapoport , Michael Kerrisk , Palmer Dabbelt , Paul Walmsley , Peter Zijlstra , Rick Edgecombe , Roman Gushchin , Shakeel Butt , Shuah Khan , Thomas Gleix ner , 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-kselftest@vger.kernel.org, linux-nvdimm@lists.01.org, linux-riscv@lists.infradead.org, x86@kernel.org, Hagen Paul Pfeifer , Palmer Dabbelt X-Mailman-Version: 3.1.1 Precedence: list List-Id: "Linux-nvdimm developer list." Archived-At: List-Archive: List-Help: List-Post: List-Subscribe: List-Unsubscribe: Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit On Mon, Feb 08, 2021 at 10:49:18AM +0200, Mike Rapoport wrote: > It is unsafe to allow saving of secretmem areas to the hibernation > snapshot as they would be visible after the resume and this essentially > will defeat the purpose of secret memory mappings. Sorry for being a bit late to this - from the point of view of running processes (and even the kernel once resume is complete), hibernation is effectively equivalent to suspend to RAM. Why do they need to be handled differently here? _______________________________________________ Linux-nvdimm mailing list -- linux-nvdimm@lists.01.org To unsubscribe send an email to linux-nvdimm-leave@lists.01.org