Received: by 2002:a25:8b91:0:0:0:0:0 with SMTP id j17csp396128ybl; Thu, 23 Jan 2020 00:17:40 -0800 (PST) X-Google-Smtp-Source: APXvYqzmCq5yfbairH6sig8pY1bhB2++ZJJy6ClVdkxx+XTNptm4jP49KD2aFu8bHzqA60o0CwwO X-Received: by 2002:a05:6830:128e:: with SMTP id z14mr10410241otp.184.1579767460197; Thu, 23 Jan 2020 00:17:40 -0800 (PST) ARC-Seal: i=1; a=rsa-sha256; t=1579767460; cv=none; d=google.com; s=arc-20160816; b=YIPhnkED7PZX1UtHaKxkw27ZLMciyVe733Yu/oCPniGicUun77j2kGl3mT9dmoMGRa gFudh0LYZlSKLO6POuHNxJxL6FrSQPe/RMp2XSdIFfTZNdlEULT/Rr+9/kaKS4JEAXTA /r6CMV5cYv/ZcqYwhCfEXDPtvlG6pux0pxpqGphi3QsfsVU3O65eC9Xw2jvErUj84lrr 71aqGPA0eJZH7lWfP0ZRDPDcJFXTVcFcCld64J3ZhiTxjo+QgdhmXHQSv1shVmibmw0k vfZ56HjtaIhtKuOUEiyT9PdIbHrUWpyiwN2hjitUK6+/mWnhUKLa0ZRuTlfhB0qFHTS5 wcUw== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:sender:user-agent:in-reply-to :content-disposition:mime-version:references:message-id:subject:cc :to:from:date:dkim-signature; bh=PPVaeXaXqO644uKt7eoWxEa5cUlx4kFXc+xXb3pXKAo=; b=EYOfGQ+FzRfN61yL3CjBcB4ygjV3MuypTvHPQvXZbslzUz0qD5nUlUI4R6tKio1fMk HOCm9HSWgSMAzPCFVM5Fh4t+V3rC04K+A7obbT9SIlitPoFIgOiPmmNBqC6MquMMZo4A aTEGhZRitdYPlysvda3u6K51u2fl+w6rqppNYKLJGo7Fv5MZQPuWhloAqFBet+p1j02d xh2pNF00xvIgKxoVYl9nFfB56DsSw+/Yp0DRUP5Jy6fOisKVui2PbOKucJdDXHBTuuK6 aCSF/xI32Ir1iAVqF6JNVYAnT/81nWl5CcrklrEWq30XINV3hoebRRWerqSn5LdGdmtg XLRA== ARC-Authentication-Results: i=1; mx.google.com; dkim=pass header.i=@alien8.de header.s=dkim header.b=qS8R044I; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=alien8.de Return-Path: Received: from vger.kernel.org (vger.kernel.org. [209.132.180.67]) by mx.google.com with ESMTP id 101si887903otm.168.2020.01.23.00.17.28; Thu, 23 Jan 2020 00:17:40 -0800 (PST) Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67; Authentication-Results: mx.google.com; dkim=pass header.i=@alien8.de header.s=dkim header.b=qS8R044I; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=alien8.de Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726234AbgAWIQ3 (ORCPT + 99 others); Thu, 23 Jan 2020 03:16:29 -0500 Received: from mail.skyhub.de ([5.9.137.197]:44248 "EHLO mail.skyhub.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725785AbgAWIQ3 (ORCPT ); Thu, 23 Jan 2020 03:16:29 -0500 Received: from zn.tnic (p200300EC2F095B0060FE665DEF90E16F.dip0.t-ipconnect.de [IPv6:2003:ec:2f09:5b00:60fe:665d:ef90:e16f]) (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 4EB9C1EC047D; Thu, 23 Jan 2020 09:16:28 +0100 (CET) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=alien8.de; s=dkim; t=1579767388; 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=PPVaeXaXqO644uKt7eoWxEa5cUlx4kFXc+xXb3pXKAo=; b=qS8R044IuNPx4oq9bwbELyDinMpvs5kh2AipLwGxy2+TB4JfZL5wnmlUcGK9DL4B2wETKS X7xlodcsMotN7YpZHq9YKJhP1bheZSu727agE4+gK8dmNFaHNFhP4OEz26/H/PYtGs/5lD DqHeJg4cI3tQur99NC/gyt3FAKzh93M= Date: Thu, 23 Jan 2020 09:16:25 +0100 From: Borislav Petkov To: Qian Cai Cc: Peter Zijlstra , Marco Elver , Thomas Gleixner , Ingo Molnar , Dave Hansen , Andy Lutomirski , the arch/x86 maintainers , LKML Subject: Re: [PATCH -next] x86/mm/pat: silence a data race in cpa_4k_install Message-ID: <20200123081625.GA10328@zn.tnic> References: <20200122084604.GP14914@hirez.programming.kicks-ass.net> <4F7E8467-98F0-483A-BF70-CD06AC78890D@lca.pw> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline In-Reply-To: <4F7E8467-98F0-483A-BF70-CD06AC78890D@lca.pw> 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, Jan 22, 2020 at 09:15:07PM -0500, Qian Cai wrote: > Okay, so which way should we move forward with this then? Borislav > liked __no_kasan_or_inline and Peter liked data_race(). I personally > like data_race() more because it has nothing to do with the GCC bug, > but I realized my opinion has little weight here. Do the data_race() thing, pls. But do send after the merge window because latter should open next week and we all will be busy and not review/apply new stuff. Thx. -- Regards/Gruss, Boris. https://people.kernel.org/tglx/notes-about-netiquette