From patchwork Fri Jan 25 18:07:05 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jeremy Linton X-Patchwork-Id: 10781823 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 7CF4F13B4 for ; Fri, 25 Jan 2019 18:08:46 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 6C2BD302CF for ; Fri, 25 Jan 2019 18:08:46 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 6086A302F7; Fri, 25 Jan 2019 18:08:46 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-5.2 required=2.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,MAILING_LIST_MULTI,RCVD_IN_DNSWL_MED autolearn=ham version=3.3.1 Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id EEF69302CF for ; Fri, 25 Jan 2019 18:08:45 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20170209; h=Sender: Content-Transfer-Encoding:Content-Type:MIME-Version:Cc:List-Subscribe: List-Help:List-Post:List-Archive:List-Unsubscribe:List-Id:References: In-Reply-To:Message-Id:Date:Subject:To:From:Reply-To:Content-ID: Content-Description:Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc :Resent-Message-ID:List-Owner; bh=AXS8IWt+aGY2H3gwTckH7ol7aTF44rnNHN5+tcOxA6o=; b=k13rJuguZ4blnird6u8KGrBpf6 rNgjfnrokN6/9qv7INatLCJH/KiyWzjsdc+0eTikQuTo2EyzupAmRT50njQIsY9ZRO1A7kbnBVxfN 195UBzdYDF7Jms38bHQmLB1+lPzJf5VdV0UvqZaLE4Vf0N0U/+n3uo+uMnsNBUonLkfGuoVOpaUuC SnDWuNwR7U41lct09LnBch/kVaTLee4au58tVbvucNv8lomS9TJPUopT3XJLwBWlKMibKbyjV4b4l s6DMnBOAu4XLJEEgV7npwxuEHRr8UcoLpTdTymOYq2kA8UglyX5JVJODvpSzy3lhZ3xliRNy1zHQm CAyLbY9w==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.90_1 #2 (Red Hat Linux)) id 1gn5uF-0006c9-N4; Fri, 25 Jan 2019 18:08:43 +0000 Received: from foss.arm.com ([217.140.101.70]) by bombadil.infradead.org with esmtp (Exim 4.90_1 #2 (Red Hat Linux)) id 1gn5t1-0005K1-Vw for linux-arm-kernel@lists.infradead.org; Fri, 25 Jan 2019 18:07:31 +0000 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 E82021650; Fri, 25 Jan 2019 10:07:27 -0800 (PST) Received: from beelzebub.austin.arm.com (beelzebub.austin.arm.com [10.118.12.119]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPA id 446F93F5AF; Fri, 25 Jan 2019 10:07:27 -0800 (PST) From: Jeremy Linton To: linux-arm-kernel@lists.infradead.org Subject: [PATCH v4 06/12] arm64: add sysfs vulnerability show for spectre v1 Date: Fri, 25 Jan 2019 12:07:05 -0600 Message-Id: <20190125180711.1970973-7-jeremy.linton@arm.com> X-Mailer: git-send-email 2.17.2 In-Reply-To: <20190125180711.1970973-1-jeremy.linton@arm.com> References: <20190125180711.1970973-1-jeremy.linton@arm.com> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20190125_100729_053425_F41FB7E9 X-CRM114-Status: GOOD ( 10.17 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: 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, Jeremy Linton , steven.price@arm.com, ykaukab@suse.de, dave.martin@arm.com, shankerd@codeaurora.org MIME-Version: 1.0 Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org X-Virus-Scanned: ClamAV using ClamSMTP 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 Reviewed-by: Andre Przywara --- 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) +{ + return sprintf(buf, "Mitigation: __user pointer sanitization\n"); +} + +#endif