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=-2.6 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE, SPF_PASS,USER_AGENT_SANE_1 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 7BDFDC4740A for ; Mon, 9 Sep 2019 12:45:08 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 4020C2196E for ; Mon, 9 Sep 2019 12:45:08 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=linaro.org header.i=@linaro.org header.b="NWhyNH6O" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728703AbfIIMpH (ORCPT ); Mon, 9 Sep 2019 08:45:07 -0400 Received: from mail-lj1-f177.google.com ([209.85.208.177]:36308 "EHLO mail-lj1-f177.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726008AbfIIMpH (ORCPT ); Mon, 9 Sep 2019 08:45:07 -0400 Received: by mail-lj1-f177.google.com with SMTP id l20so12595492ljj.3 for ; Mon, 09 Sep 2019 05:45:06 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=date:from:to:cc:subject:message-id:mime-version:content-disposition :user-agent; bh=XZNU9mYm+eA3iubpUKCBjLPxCWOCN99H94H5Z96yb+c=; b=NWhyNH6OabvIz4lctQbmreCqzgzmH2Xa7CaDocgi/tonXDYHk80PSyfhhYpKu6EPLG mxB79qkb8zpLjQzxTPijpm6U5xjzJDQnNxGhFJnmDfMiuqcFu/4QCX6IztYek69O90hy lLx3c5ohXqkL/mm4g2hK2DhXxTmEi6TN7HQcVbgLvE5Sx+78Nelgo8f7Xj0yQCZsJ4Oc /S0AcSJySMsEoDITjm8vkMPUyftNde8L1Gj53WtW6ca0oXO3L6JlxhNwwLFebmU9GX3t nlJ6UYP/+Dbt2jyachGKB1Kqx1Ic3VbVT1j63TnBrob4Qf2SWrY8V4gZyYfp+mumgdSa exxA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:date:from:to:cc:subject:message-id:mime-version :content-disposition:user-agent; bh=XZNU9mYm+eA3iubpUKCBjLPxCWOCN99H94H5Z96yb+c=; b=lv2AhJFPSd0+4j8WzCfd196hhVoBTl265NcGi61z9DeBOOyUjR807sSjtRPwDoOLMs BNSGVfDLdWQ8M7fpW2/u4LVmw4Fr8y8KNXd4Sq8/dqBby/QoEpglBaDnFDUVpZoC48U9 VsfT0ggXwEObhXLaiCpCF2R75eRoJZ1pTacv5td2xW+bKIsWJ4so69h9uiMm6iYq1Qvj V1tmjBgzC9Uyv3fmvOOlkzG8yyYMQ8EpE0KJk+XR1FtonNBTuDqgXflelsbCy3QAykNi 0ZdSRL62H9qLmTjexC1DUYTjqAguSXMS34+I5+OVwdbDWKMK/RvZwfwnrtInYs1Hqsw8 m5RA== X-Gm-Message-State: APjAAAV2ClquUZ20PvmqGqyPJq9EZYm42QqvkRg2Ggb1gGMgL3HSFzVA uh14ULjpBbzVmDP6kuwYs4GjYtApc2c= X-Google-Smtp-Source: APXvYqyThmC0MpAEFB4INR+SFYVizkkvnw5Zhg8d4DXEDYZWY8IUKCOBIQDSY6UCpYiSySQFc8NiYQ== X-Received: by 2002:a2e:3102:: with SMTP id x2mr7498528ljx.218.1568033104962; Mon, 09 Sep 2019 05:45:04 -0700 (PDT) Received: from centauri (ua-84-219-138-247.bbcust.telenor.se. [84.219.138.247]) by smtp.gmail.com with ESMTPSA id r11sm2904021ljh.23.2019.09.09.05.45.03 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 09 Sep 2019 05:45:04 -0700 (PDT) Date: Mon, 9 Sep 2019 14:45:01 +0200 From: Niklas Cassel To: stable@vger.kernel.org Cc: will.deacon@arm.com Subject: stable backport request, add cortex-a cpus to whitelist Message-ID: <20190909124501.GA14378@centauri> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.12.1 (2019-06-15) Sender: stable-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org Hello, I would like to request 2a355ec25729 ("arm64: kpti: Whitelist Cortex-A CPUs that don't implement the CSV3 field") to be backported to 4.19 stable. These CPUs are not susceptible to Meltdown, so enabling the mitigations for Meltdown (kpti) should be redundant, especially since we know that it can have a huge performance penalty for certain workloads. kpti will still be automatically enabled if KASLR is enabled. Kind regards, Niklas