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=-2.3 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_PASS,USER_AGENT_MUTT autolearn=ham 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 95D36C6778C for ; Wed, 4 Jul 2018 14:03:30 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 4649A24072 for ; Wed, 4 Jul 2018 14:03:30 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 4649A24072 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=arm.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752794AbeGDOD0 (ORCPT ); Wed, 4 Jul 2018 10:03:26 -0400 Received: from foss.arm.com ([217.140.101.70]:37866 "EHLO foss.arm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752197AbeGDODY (ORCPT ); Wed, 4 Jul 2018 10:03:24 -0400 Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.72.51.249]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id 481BC18A; Wed, 4 Jul 2018 07:03:24 -0700 (PDT) Received: from edgewater-inn.cambridge.arm.com (usa-sjc-imap-foss1.foss.arm.com [10.72.51.249]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPA id 195303F5A0; Wed, 4 Jul 2018 07:03:24 -0700 (PDT) Received: by edgewater-inn.cambridge.arm.com (Postfix, from userid 1000) id 0D4F11AE189D; Wed, 4 Jul 2018 15:04:04 +0100 (BST) Date: Wed, 4 Jul 2018 15:04:04 +0100 From: Will Deacon To: Kees Cook Cc: Laura Abbott , Mark Rutland , Ard Biesheuvel , Kernel Hardening , LKML , linux-arm-kernel , Alexander Popov , Catalin Marinas Subject: Re: [PATCH] arm64: Clear the stack Message-ID: <20180704140403.GE4828@arm.com> References: <20180629190553.7282-1-labbott@redhat.com> <706dc06b-0157-89cb-33a6-d0b9d811dcf0@redhat.com> <20180702095931.GB28665@arm.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.5.23 (2014-03-12) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi Kees, On Mon, Jul 02, 2018 at 10:29:24AM -0700, Kees Cook wrote: > On Mon, Jul 2, 2018 at 2:59 AM, Will Deacon wrote: > > On Fri, Jun 29, 2018 at 01:25:20PM -0700, Kees Cook wrote: > >> No worries! I've made the change locally and will push this out to > >> -next unless there are objections? > > > > I'm a bit wary of conflicts in entry.S, since it's likely that we're going > > to have a lot going on in there for 4.19. > > > > Could I take this via arm64 instead, please, or are there dependencies > > on other parts of your tree? > > It depends on the plugin existing, but we could split it up so the > arm64 part could go separately. It would just be a no-op in the arm64 > tree since CONFIG_GCC_PLUGIN_STACKLEAK won't exist there. Whatever > works best for you! If you could split it up then that would be really helpful, please. Thanks, Will