From patchwork Thu Jan 3 00:49:18 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jeremy Linton X-Patchwork-Id: 10746801 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 DA0B514DE for ; Thu, 3 Jan 2019 00:50:36 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id C7039283C5 for ; Thu, 3 Jan 2019 00:50:36 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id BAD7328405; Thu, 3 Jan 2019 00:50:36 +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 73908283C5 for ; Thu, 3 Jan 2019 00:50:36 +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=Ko/Ycui9CiSZ5lKgFr8dgE2xzlw8xmQp2ERiUaYc1x8=; b=uWgejckNgrSUBqHLVYJ0kK6OtF kHLyoMIM796+Y6jdEBWV4fLHF+zWUZxBhPw91qh8LY12iqO8NkiM++YkGPW9p+zlKs8RsKpLRTb34 srRaWG9joehw0y42aZSWIXrwa845sLOUakQc3+cRr7lRtrwftwPG1Oz+6bgwlnoMySbBLfMhofDgE 82oCxA4k+sQmOcSv7cGepeSjK2NwcWIkbUtl0FCUTyDFuYqJWE+1BCCOe4R04m/mfSxNSprqw6fQ9 pnuVfSbmLIXsBMWxFLrfdKw7hktVW92lASNIvp+xrVvgwkcfyhfQGhPuUWbpmXjOEWcmMnUinDhZh ALH8M0eQ==; 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 1gerDU-0002ye-N3; Thu, 03 Jan 2019 00:50:32 +0000 Received: from usa-sjc-mx-foss1.foss.arm.com ([217.140.101.70] helo=foss.arm.com) by bombadil.infradead.org with esmtp (Exim 4.90_1 #2 (Red Hat Linux)) id 1gerCa-0000oq-BO for linux-arm-kernel@lists.infradead.org; Thu, 03 Jan 2019 00:49:41 +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 1943515BF; Wed, 2 Jan 2019 16:49:36 -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 3A2D43F5AF; Wed, 2 Jan 2019 16:49:35 -0800 (PST) From: Jeremy Linton To: linux-arm-kernel@lists.infradead.org Subject: [PATCH v2 4/7] arm64: add sysfs vulnerability show for spectre v1 Date: Wed, 2 Jan 2019 18:49:18 -0600 Message-Id: <20190103004921.1928921-5-jeremy.linton@arm.com> X-Mailer: git-send-email 2.17.2 In-Reply-To: <20190103004921.1928921-1-jeremy.linton@arm.com> References: <20190103004921.1928921-1-jeremy.linton@arm.com> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20190102_164936_977692_304392A6 X-CRM114-Status: GOOD ( 11.11 ) 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: mark.rutland@arm.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 --- 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 09ac548c9d44..2352955b1259 100644 --- a/arch/arm64/kernel/cpu_errata.c +++ b/arch/arm64/kernel/cpu_errata.c @@ -742,3 +742,13 @@ 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