From patchwork Fri Apr 24 16:38:40 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: James Morse X-Patchwork-Id: 11508579 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 7DA60912 for ; Fri, 24 Apr 2020 16:39:56 +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 375F1206D7 for ; Fri, 24 Apr 2020 16:39:56 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="WyuwzKTE" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 375F1206D7 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+patchwork-linux-arm=patchwork.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:Cc:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version: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:In-Reply-To:References: List-Owner; bh=YGpqhpS9r1XXwM9fSV/GaZUwM5AcaU7G6rGj+joXC4I=; b=WyuwzKTE9bTfDC OgMMKt5Jle9Xo/8hxDuor/deLyElLbFKjgoFcdYyMQFXT/H/Zex94ulw89BgLVY0hXdcYzsT6Es0y 5fXCEJUCvPKLNUzIuM2PqBqug+zH5ur1/1GGRIN6rckrTlpO/dujcVT7HUt8g1pMdEvnIxAnzu55r Do2cjewGHlGRc4OxRoJPDefKzEPbsaCCIuZh4cqxUybj5+otxnrq1anZJWQCpUwjEJHi3QzvEn0KP DSBmiTbqUWGEHlE5rXTj9hkMslllmWLPEMBbMB1+1OJYOoeZsHwso2kxIGrG4ok5Z8VRkvjDyqUqW DvSMgYqC8N0iA/tyHSyA==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1jS1Mk-0000cQ-Tw; Fri, 24 Apr 2020 16:39:50 +0000 Received: from foss.arm.com ([217.140.110.172]) by bombadil.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1jS1Lr-0008Fb-Eu for linux-arm-kernel@lists.infradead.org; Fri, 24 Apr 2020 16:38:58 +0000 Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.121.207.14]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id 75B7331B; Fri, 24 Apr 2020 09:38:54 -0700 (PDT) Received: from melchizedek.cambridge.arm.com (melchizedek.cambridge.arm.com [10.1.196.50]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id 07C933F68F; Fri, 24 Apr 2020 09:38:53 -0700 (PDT) From: James Morse To: stable@vger.kernel.org Subject: [stable:PATCH 0/5 v4.19] arm64: Workaround Neoverse-N1 #1542419 Date: Fri, 24 Apr 2020 17:38:40 +0100 Message-Id: <20200424163845.4141-1-james.morse@arm.com> X-Mailer: git-send-email 2.19.1 MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200424_093855_572609_94A6BA58 X-CRM114-Status: UNSURE ( 9.48 ) X-CRM114-Notice: Please train this message. X-Spam-Score: -2.3 (--) X-Spam-Report: SpamAssassin version 3.4.4 on bombadil.infradead.org summary: Content analysis details: (-2.3 points) pts rule name description ---- ---------------------- -------------------------------------------------- -2.3 RCVD_IN_DNSWL_MED RBL: Sender listed at https://www.dnswl.org/, medium trust [217.140.110.172 listed in list.dnswl.org] -0.0 SPF_PASS SPF: sender matches SPF record 0.0 SPF_HELO_NONE SPF: HELO does not publish an SPF Record X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: linux-arm-kernel@lists.infradead.org Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org This series backports the Neoverse-N1 #1542419 erratum workaround to v4.19.116. The series was originally merged in v5.5. These patches handle user-space. The kernel change was: commit dd8a1f134884 ("arm64: ftrace: Ensure synchronisation in PLT setup for Neoverse-N1 #1542419"), which has already been picked up by stable. (magic!) Backporting this stuff past v4.19 isn't straight-forward as the kernel change depends on the work done in: https://lore.kernel.org/linux-arm-kernel/1529656278-878-1-git-send-email-will.deacon@arm.com/ which was merged for v4.19. Thanks, James Catalin Marinas (1): arm64: Silence clang warning on mismatched value/register sizes James Morse (3): arm64: errata: Hide CTR_EL0.DIC on systems affected by Neoverse-N1 #1542419 arm64: Fake the IminLine size on systems affected by Neoverse-N1 #1542419 arm64: compat: Workaround Neoverse-N1 #1542419 for compat user-space Marc Zyngier (1): arm64: Add part number for Neoverse N1 Documentation/arm64/silicon-errata.txt | 1 + arch/arm64/Kconfig | 16 ++++++++++++++++ arch/arm64/include/asm/cache.h | 3 ++- arch/arm64/include/asm/cpucaps.h | 3 ++- arch/arm64/include/asm/cputype.h | 2 ++ arch/arm64/kernel/cpu_errata.c | 22 ++++++++++++++++++++++ arch/arm64/kernel/sys_compat.c | 11 +++++++++++ arch/arm64/kernel/traps.c | 9 +++++++++ 8 files changed, 65 insertions(+), 2 deletions(-)