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=-13.6 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT 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 920B6C43387 for ; Wed, 9 Jan 2019 23:56:12 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (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 6197E20675 for ; Wed, 9 Jan 2019 23:56:12 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="V2H1Jmb3" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 6197E20675 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-arm-kernel-bounces+infradead-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=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=0pyXBdPXcKL20eF8m7/YmfbIEgUdtFOySHcVrr8MLWg=; b=V2H1Jmb3ZxfkCTXHil/hsy0NqJ poWL8UiWyQXqSCfFgErWEk9N7iCBb5cjR3CY1xAVCUe0vhFq1kw9DWmjfr5cMAu/Vv1YyqFwusHfM epd3P7vAIJH3WpWyBOuKjhAuI+8nxeCJoP8S0UBu1htqroENCdlfPFU1EQL16YJ1UroQIrfFmiN7g e44O4n8Fbkz1z5Zf7FNAizx2XlRswIGph/15cowFD7XHgjN5sx/EV9eUMbAu4i0lI7CfD6Ja5Q6Kn dnEfQYukfmC9jahHfX1u54oVE74RLly6lTdYaWslXu6veXezypTtwMd4a0mlDxzf014oAkY0tlGyW 0WKulX9g==; 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 1ghNhe-000698-Nl; Wed, 09 Jan 2019 23:56:06 +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 1ghNhR-0005xZ-IF for linux-arm-kernel@lists.infradead.org; Wed, 09 Jan 2019 23:55:54 +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 5FA8AA78; Wed, 9 Jan 2019 15:55:52 -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 AF7233F5AF; Wed, 9 Jan 2019 15:55:51 -0800 (PST) From: Jeremy Linton To: linux-arm-kernel@lists.infradead.org Subject: [PATCH v3 2/7] arm64: add sysfs vulnerability show for spectre v1 Date: Wed, 9 Jan 2019 17:55:39 -0600 Message-Id: <20190109235544.2992426-3-jeremy.linton@arm.com> X-Mailer: git-send-email 2.17.2 In-Reply-To: <20190109235544.2992426-1-jeremy.linton@arm.com> References: <20190109235544.2992426-1-jeremy.linton@arm.com> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20190109_155553_607702_4AA62C64 X-CRM114-Status: UNSURE ( 8.49 ) X-CRM114-Notice: Please train this message. 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 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org 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 | 17 +++++++++++++++++ 1 file changed, 17 insertions(+) diff --git a/arch/arm64/kernel/cpu_errata.c b/arch/arm64/kernel/cpu_errata.c index 09ac548c9d44..8dde8c616b7e 100644 --- a/arch/arm64/kernel/cpu_errata.c +++ b/arch/arm64/kernel/cpu_errata.c @@ -109,6 +109,8 @@ cpu_enable_trap_ctr_access(const struct arm64_cpu_capabilities *__unused) atomic_t arm64_el2_vector_last_slot = ATOMIC_INIT(-1); +uint arm64_requested_vuln_attrs = VULN_SPECTREV1; + #ifdef CONFIG_HARDEN_BRANCH_PREDICTOR #include #include @@ -742,3 +744,18 @@ const struct arm64_cpu_capabilities arm64_errata[] = { { } }; + +#ifdef CONFIG_GENERIC_CPU_VULNERABILITIES + +uint arch_supported_vuln_attr_fields(void) +{ + return arm64_requested_vuln_attrs; +} + +ssize_t cpu_show_spectre_v1(struct device *dev, struct device_attribute *attr, + char *buf) +{ + return sprintf(buf, "Mitigation: __user pointer sanitization\n"); +} + +#endif -- 2.17.2 _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel