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=-3.8 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 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 2FE13C5519F for ; Tue, 17 Nov 2020 17:36:46 +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 A876020678 for ; Tue, 17 Nov 2020 17:36:45 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="n4NwXDIA" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org A876020678 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=arm.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+linux-arm-kernel=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=2nupE+bmcN1nYJ5J7evrPgeh9yqcs0aU3kN/Rm1QM0w=; b=n4NwXDIAPn5HdIlkIG0dGYLe3 2TKr+zHnwnS4wA6n9OS52EekV4LgJNZOHHGNwaY/TZutWEfaemJUru6dKeRY8XbEKBNYGo5Gw2iE1 HiYvNI16qbCDo8k0GMW6CogrCd/sjAjk7ssjN+vj4Bef0qWFSXNjgXNzfLTE4HTkdI03+qY3jeGNw vN841vED92b6jat67h9pn5abBP2F5X2YRiD2tqS0vBMAEkcfw0T0As0/tZ7q1kIMgiS1IjkY7oGAL 0FyCWuMGxeEXsLAAcuSEIjOqk4m6M8n+w6ljZ81SBc+2oCM3KuuNDEC5RQmSkYSTl1ZOLCh2dEEfp ykrfdTPxQ==; Received: from localhost ([::1] helo=merlin.infradead.org) by merlin.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1kf4t9-00041I-MS; Tue, 17 Nov 2020 17:35:32 +0000 Received: from mail.kernel.org ([198.145.29.99]) by merlin.infradead.org with esmtps (Exim 4.92.3 #3 (Red Hat Linux)) id 1kf4t6-00040V-Q8 for linux-arm-kernel@lists.infradead.org; Tue, 17 Nov 2020 17:35:29 +0000 Received: from trantor (unknown [2.26.170.190]) (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 64F642463D; Tue, 17 Nov 2020 17:35:26 +0000 (UTC) Date: Tue, 17 Nov 2020 17:35:24 +0000 From: Catalin Marinas To: Sami Tolvanen Subject: Re: [PATCH 0/2] scs: switch to vmapped shadow stacks Message-ID: References: <20201022202355.3529836-1-samitolvanen@google.com> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <20201022202355.3529836-1-samitolvanen@google.com> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20201117_123528_956673_57CC7080 X-CRM114-Status: GOOD ( 14.62 ) X-BeenThere: linux-arm-kernel@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 , Kees Cook , Ard Biesheuvel , linux-kernel@vger.kernel.org, James Morse , Will Deacon , linux-arm-kernel@lists.infradead.org Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org On Thu, Oct 22, 2020 at 01:23:53PM -0700, Sami Tolvanen wrote: > As discussed a few months ago [1][2], virtually mapped shadow call stacks > are better for safety and robustness. This series dusts off the VMAP > option from the original SCS patch series and switches the kernel to use > virtually mapped shadow stacks unconditionally when SCS is enabled. > > [1] https://lore.kernel.org/lkml/20200515172355.GD23334@willie-the-truck/ > [2] https://lore.kernel.org/lkml/20200427220942.GB80713@google.com/ > > > Sami Tolvanen (2): > scs: switch to vmapped shadow stacks > arm64: scs: use vmapped IRQ and SDEI shadow stacks Will, Mark. Any objections to this series? If not, I can queue it for 5.11 via the arm64 tree. Thanks. -- Catalin _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel