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: 226968 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=-3.8 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI, SPF_HELO_NONE, SPF_PASS, USER_AGENT_GIT autolearn=no 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 916DFC55186 for ; Fri, 24 Apr 2020 16:38:55 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 7CE8B206D7 for ; Fri, 24 Apr 2020 16:38:55 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727843AbgDXQiz (ORCPT ); Fri, 24 Apr 2020 12:38:55 -0400 Received: from foss.arm.com ([217.140.110.172]:39500 "EHLO foss.arm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726793AbgDXQiz (ORCPT ); Fri, 24 Apr 2020 12:38:55 -0400 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 Cc: linux-arm-kernel@lists.infradead.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 Sender: stable-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.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(-)