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,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,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 90862C433DB for ; Mon, 22 Feb 2021 07:46:12 +0000 (UTC) Received: from merlin.infradead.org (merlin.infradead.org [205.233.59.134]) (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 1251164EB4 for ; Mon, 22 Feb 2021 07:46:12 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 1251164EB4 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-riscv-bounces+linux-riscv=archiver.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=merlin.20170209; h=Sender:Content-Transfer-Encoding: Content-Type:Cc:List-Subscribe:List-Help:List-Post:List-Archive: List-Unsubscribe:List-Id:In-Reply-To:MIME-Version:References:Message-ID: Subject:To:From:Date:Reply-To:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=tzN4TIA3aKX+9wlFDzr3MO0ehEEpydXn5nPxeFEvDRo=; b=OZNJ9aIoJk4RSdOCK0Kgwl3nN 0SjVnZqqnGY6LWjRQYRAW0CnqAV02Jiv4ADHw5/FFrxg7BxZmGioH08I5Irwc4aLHA8cwzFM2X5JQ 3//W0uX+RGejG2mbDXT2LDlyrkYLkk5Z21SNOd/orHGUv3CAS3kZIlwIKPgMQuWYHgAipp5EHlLvg MG3p/1Hh+J7UieLHZrAvznRHFFoIKrI9FoLZzCU2YVj7ZjQLKVbINjrjdscaGdr0FBpv8fw+dIgDg 9qAkTM2pHIkfLKiB5Hx2oRlE10qXQ2MOu/2F7u/+7dZMeYI1bNOCqO6Wc+Tt1x6vkjRjyk/F0Gzt0 MuBwwjSww==; Received: from localhost ([::1] helo=merlin.infradead.org) by merlin.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1lE5uY-0000JB-T2; Mon, 22 Feb 2021 07:45:42 +0000 Received: from cavan.codon.org.uk ([2a00:1098:84:22e::1]) by merlin.infradead.org with esmtps (Exim 4.92.3 #3 (Red Hat Linux)) id 1lE5uR-0000I5-BR; Mon, 22 Feb 2021 07:45:36 +0000 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) X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20210222_024535_525364_4AA9C780 X-CRM114-Status: GOOD ( 11.45 ) X-BeenThere: linux-riscv@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Mark Rutland , Michal Hocko , David Hildenbrand , Peter Zijlstra , Catalin Marinas , Dave Hansen , linux-mm@kvack.org, linux-kselftest@vger.kernel.org, "H. Peter Anvin" , Christopher Lameter , Shuah Khan , Thomas Gleixner , Elena Reshetova , linux-arch@vger.kernel.org, Tycho Andersen , linux-nvdimm@lists.01.org, Will Deacon , x86@kernel.org, Matthew Wilcox , Mike Rapoport , Ingo Molnar , Michael Kerrisk , Palmer Dabbelt , Arnd Bergmann , James Bottomley , Hagen Paul Pfeifer , Borislav Petkov , Alexander Viro , Andy Lutomirski , Paul Walmsley , "Kirill A. Shutemov" , Dan Williams , linux-arm-kernel@lists.infradead.org, linux-api@vger.kernel.org, linux-kernel@vger.kernel.org, linux-riscv@lists.infradead.org, Palmer Dabbelt , linux-fsdevel@vger.kernel.org, Shakeel Butt , Andrew Morton , Rick Edgecombe , Roman Gushchin Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-riscv" Errors-To: linux-riscv-bounces+linux-riscv=archiver.kernel.org@lists.infradead.org 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-riscv mailing list linux-riscv@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-riscv