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_PASS, USER_AGENT_MUTT autolearn=ham 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 234F1C04EB9 for ; Wed, 5 Dec 2018 19:00:28 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id CAEBD20892 for ; Wed, 5 Dec 2018 19:00:27 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=alien8.de header.i=@alien8.de header.b="iFExNCPR" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org CAEBD20892 Authentication-Results: mail.kernel.org; dmarc=fail (p=reject dis=none) header.from=alien8.de Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728247AbeLETA0 (ORCPT ); Wed, 5 Dec 2018 14:00:26 -0500 Received: from mail.skyhub.de ([5.9.137.197]:58746 "EHLO mail.skyhub.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727436AbeLETAX (ORCPT ); Wed, 5 Dec 2018 14:00:23 -0500 Received: from zn.tnic (p200300EC2BC09900ED3DB18DCE3E6DEF.dip0.t-ipconnect.de [IPv6:2003:ec:2bc0:9900:ed3d:b18d:ce3e:6def]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.skyhub.de (SuperMail on ZX Spectrum 128k) with ESMTPSA id C6F321EC0B59; Wed, 5 Dec 2018 20:00:21 +0100 (CET) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=alien8.de; s=dkim; t=1544036422; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:in-reply-to:in-reply-to: references:references; bh=deCI49BX/nKTczjOt7d+EAZoSxRhSyQ9/QlS52WemOI=; b=iFExNCPRzZVhU5jhQK46WYw2zQgkBIAQIU8biYFHvZg+Np1Ag7cC2AI9kx+9bL2Hwtj6nv FHcF9BKJ5kCNVXRPFIOEg+nJJnt6Epsvrx5vtRH9eAMliM9jw21DagKbbP+fbu1YXcf8I0 kfBMs16RCYQcm/ec7ujhf+ZXGkLDTOU= Date: Wed, 5 Dec 2018 20:00:20 +0100 From: Borislav Petkov To: Jari Ruusu Cc: Greg Kroah-Hartman , linux-kernel@vger.kernel.org, stable@vger.kernel.org, Sebastian Andrzej Siewior , Ingo Molnar , Thomas Gleixner , Andy Lutomirski , Dave Hansen , "H. Peter Anvin" , "Jason A. Donenfeld" , kvm ML , Paolo Bonzini , Radim =?utf-8?B?S3I/bcOhPw==?= , Rik van Riel , x86-ml Subject: Re: [PATCH 4.14 121/146] x86/fpu: Disable bottom halves while loading FPU registers Message-ID: <20181205190020.GO29510@zn.tnic> References: <20181204103726.750894136@linuxfoundation.org> <20181204103731.697870447@linuxfoundation.org> <5C07FC30.43601034@users.sourceforge.net> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline In-Reply-To: <5C07FC30.43601034@users.sourceforge.net> User-Agent: Mutt/1.10.1 (2018-07-13) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Wed, Dec 05, 2018 at 06:26:24PM +0200, Jari Ruusu wrote: > That same race appears to be present in older kernel branches also. > The context is sligthly different, so the patch for 4.14 does not > apply cleanly to older kernels. For 4.9 branch, this edit works: You could take the upstream one, amend it with your change, test it and send it to Greg - I believe he'll take the backport gladly. :-) -- Regards/Gruss, Boris. Good mailing practices for 400: avoid top-posting and trim the reply.