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=-2.4 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 4F95FC3A5A6 for ; Thu, 19 Sep 2019 20:32:52 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 1BD0F207FC for ; Thu, 19 Sep 2019 20:32:52 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=kroah.com header.i=@kroah.com header.b="gwJKQwE4"; dkim=pass (2048-bit key) header.d=messagingengine.com header.i=@messagingengine.com header.b="c7ot5wMq" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2404653AbfISUcv (ORCPT ); Thu, 19 Sep 2019 16:32:51 -0400 Received: from out1-smtp.messagingengine.com ([66.111.4.25]:41777 "EHLO out1-smtp.messagingengine.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2404652AbfISUcv (ORCPT ); Thu, 19 Sep 2019 16:32:51 -0400 Received: from compute6.internal (compute6.nyi.internal [10.202.2.46]) by mailout.nyi.internal (Postfix) with ESMTP id 8521221540; Thu, 19 Sep 2019 16:32:50 -0400 (EDT) Received: from mailfrontend2 ([10.202.2.163]) by compute6.internal (MEProxy); Thu, 19 Sep 2019 16:32:50 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kroah.com; h= date:from:to:cc:subject:message-id:references:mime-version :content-type:in-reply-to; s=fm1; bh=QVZuPpLZDFPUAlPHytjLzeeKOPT w+aQXrwObSDFNyV4=; b=gwJKQwE46zOxbvT2l8ZQaklTJtfvaATINc9hO+cLi89 I2KnC9M99+blmfWCd0HFRbINI9Masn7MclrcK4Hq0DG87hnvittTY/GVRs93cD8e ojEDQbIINsdOketpmOPQRt9jzyOF4IC3Y1JS7MTXFLK23IBU9ZLDX4rzCLJUqYP+ oU6fjWAZpz5N9mz22OZgmjGZIMk7V9nLhXqTtBY+eAR7k+5PJ4knEyZ0jYc8B9rm 2ob4OmrjdKgYZYb0WawUUTmkZDHfzRZfSAUMVZQ8+2rSH935lWU+92WiqImMqj37 M6S6bbXJkx27EZCGpuWP0y36rG4JibB9oNhbfhxVWgg== DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d= messagingengine.com; h=cc:content-type:date:from:in-reply-to :message-id:mime-version:references:subject:to:x-me-proxy :x-me-proxy:x-me-sender:x-me-sender:x-sasl-enc; s=fm3; bh=QVZuPp LZDFPUAlPHytjLzeeKOPTw+aQXrwObSDFNyV4=; b=c7ot5wMqZH4AvoBZM9fSXG abXoZ7vexmzKsxbVn8Qq+vAb26Q9s7EnfJCtDeqRNNAfQZFgYQlsRyH4Qcp7nQWY a/F2ld3q97OiShPCZqP64FEuSdDfR9w02Knp0uP2Y8S1+Eq1MfZvv5NGGQ9dGSLh wYdmG0TW4y2+5sL4XUsDMv7Ny+c8pcMLIKRrPMTkrJ9pV/yiRl4mVGro4dNkJBtW lkqrw5x2k5wYfqPCApRDLJKsYsEXwS+7XauoFMZ8lz1vmsJlykUay1DJQ/HW+HKr O7VRdUVLzhz7JN9UK5pknFfdACo18bPxeNfs4KK59ULWGBznqjQhp0yjpefvOXgQ == X-ME-Sender: X-ME-Proxy-Cause: gggruggvucftvghtrhhoucdtuddrgedufedrvddtgdduhedvucetufdoteggodetrfdotf fvucfrrhhofhhilhgvmecuhfgrshhtofgrihhlpdfqfgfvpdfurfetoffkrfgpnffqhgen uceurghilhhouhhtmecufedttdenucesvcftvggtihhpihgvnhhtshculddquddttddmne cujfgurhepfffhvffukfhfgggtuggjfgesthdtredttdervdenucfhrhhomhepifhrvghg ucfmjfcuoehgrhgvgheskhhrohgrhhdrtghomheqnecukfhppeekfedrkeeirdekledrud dtjeenucfrrghrrghmpehmrghilhhfrhhomhepghhrvghgsehkrhhorghhrdgtohhmnecu vehluhhsthgvrhfuihiivgeptd X-ME-Proxy: Received: from localhost (83-86-89-107.cable.dynamic.v4.ziggo.nl [83.86.89.107]) by mail.messagingengine.com (Postfix) with ESMTPA id EAF03D6005E; Thu, 19 Sep 2019 16:32:49 -0400 (EDT) Date: Thu, 19 Sep 2019 22:32:47 +0200 From: Greg KH To: Niklas Cassel Cc: stable@vger.kernel.org, will.deacon@arm.com Subject: Re: stable backport request, add cortex-a cpus to whitelist Message-ID: <20190919203247.GA258783@kroah.com> References: <20190909124501.GA14378@centauri> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20190909124501.GA14378@centauri> 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 On Mon, Sep 09, 2019 at 02:45:01PM +0200, Niklas Cassel wrote: > 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. Now queued up, thanks. greg k-h