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=-7.0 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_PASS,URIBL_BLOCKED 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 362B0C169C4 for ; Thu, 31 Jan 2019 17:52:26 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 15A5F20881 for ; Thu, 31 Jan 2019 17:52:26 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726488AbfAaRwY (ORCPT ); Thu, 31 Jan 2019 12:52:24 -0500 Received: from foss.arm.com ([217.140.101.70]:48720 "EHLO foss.arm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725849AbfAaRwX (ORCPT ); Thu, 31 Jan 2019 12:52:23 -0500 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 5A37AA78; Thu, 31 Jan 2019 09:52:23 -0800 (PST) Received: from donnerap.cambridge.arm.com (usa-sjc-imap-foss1.foss.arm.com [10.72.51.249]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id E834E3F59C; Thu, 31 Jan 2019 09:52:20 -0800 (PST) Date: Thu, 31 Jan 2019 17:52:17 +0000 From: Andre Przywara To: Jeremy Linton Cc: linux-arm-kernel@lists.infradead.org, stefan.wahren@i2se.com, mlangsdo@redhat.com, suzuki.poulose@arm.com, marc.zyngier@arm.com, catalin.marinas@arm.com, julien.thierry@arm.com, will.deacon@arm.com, linux-kernel@vger.kernel.org, steven.price@arm.com, ykaukab@suse.de, dave.martin@arm.com, shankerd@codeaurora.org Subject: Re: [PATCH v4 06/12] arm64: add sysfs vulnerability show for spectre v1 Message-ID: <20190131175217.4ff452d5@donnerap.cambridge.arm.com> In-Reply-To: <20190125180711.1970973-7-jeremy.linton@arm.com> References: <20190125180711.1970973-1-jeremy.linton@arm.com> <20190125180711.1970973-7-jeremy.linton@arm.com> Organization: ARM X-Mailer: Claws Mail 3.17.3 (GTK+ 2.24.32; aarch64-unknown-linux-gnu) MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Fri, 25 Jan 2019 12:07:05 -0600 Jeremy Linton wrote: Hi, > From: Mian Yousaf Kaukab > > spectre v1, has been mitigated, and the mitigation is > always active. > > Signed-off-by: Mian Yousaf Kaukab > Signed-off-by: Jeremy Linton > --- > arch/arm64/kernel/cpu_errata.c | 10 ++++++++++ > 1 file changed, 10 insertions(+) > > diff --git a/arch/arm64/kernel/cpu_errata.c b/arch/arm64/kernel/cpu_errata.c > index de09a3537cd4..ef636acf5604 100644 > --- a/arch/arm64/kernel/cpu_errata.c > +++ b/arch/arm64/kernel/cpu_errata.c > @@ -730,3 +730,13 @@ const struct arm64_cpu_capabilities arm64_errata[] = { > { > } > }; > + > +#ifdef CONFIG_GENERIC_CPU_VULNERABILITIES > + > +ssize_t cpu_show_spectre_v1(struct device *dev, struct device_attribute *attr, > + char *buf) w/s issue. Other than that: Reviewed-by: Andre Przywara Cheers, Andre. > +{ > + return sprintf(buf, "Mitigation: __user pointer sanitization\n"); > +} > + > +#endif