Received: by 2002:a25:8b91:0:0:0:0:0 with SMTP id j17csp3814952ybl; Tue, 21 Jan 2020 07:31:45 -0800 (PST) X-Google-Smtp-Source: APXvYqwNdmyxFx9GGfSVsrAJHbouo9+siEldfUMmF1JyHj1xrSTH4MC85df6WR/HSnFn9LDIIfHj X-Received: by 2002:a9d:5c86:: with SMTP id a6mr4112496oti.68.1579620704737; Tue, 21 Jan 2020 07:31:44 -0800 (PST) ARC-Seal: i=1; a=rsa-sha256; t=1579620704; cv=none; d=google.com; s=arc-20160816; b=bsGdEeOj1HVTvmLhCyMeHeOJzWVE5EZyUv5Up6khflQ+c4T1i52hoaDpUqQLYEDGdJ 1fkNBk0F2/Odx0EUzFabujL/DJWJgrP6v0DLuGvQJ7h7dFtJCbN9BbAalFK5Y/DqCQ44 /yv2EiFk3pL/8/lKHgb+F3GIKLYaFqnZA8imorlJYsM/FHMW+x70YMQmnag/RMnT9voL gmtbZtkFzItN8ygEVewbWqFuwKM6oAlFe2hITKL3HSfzVy0HyZ6wK9Y31U6dtKcBHQlU 3myisoX0PDz3hO9pTvoNgJ2E/qHirjM8GxP5lgUMyu0ulXp4PNCFLZKs6Nc72FgKF4bt rlHA== 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=6y5TIWmgQrQ+KXfFCFI2F/8j7NBQMvB/7z0s7cAgzgI=; b=RBIYR2mP1FwyCShwk6Zo8WjTdjUuh/wZNevwfPm4OO+5bh93oI6pojX39GmxYjjCI+ ol+O8wRTI3XszMmZYOYRgMEchn3vDdmu1qgB2tEHoa8BcnbnRL1Bm/SzBicTQhGlGRn1 bi+xFjmyJqptpvbpI0foidpez2qgH0S2r2jpymb0CPpbQPKiwcYk4FtbUf3Uk7ajuEr2 F2SCe0PMWD98amVUP2OQsyP5qNWIngIPIINpY1gc3Vtoe0IOFNPs38LbnjANHYTTzLYt guW4GpH+zENlBF9bb84KjbYdmU2/tAShr7hDXD3ZRQZfcDXrZo3FU792DlmoCVa5PwJ6 37EA== ARC-Authentication-Results: i=1; mx.google.com; dkim=pass header.i=@alien8.de header.s=dkim header.b=oQLFfvbg; 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 u84si20133132oib.34.2020.01.21.07.31.31; Tue, 21 Jan 2020 07:31:44 -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=oQLFfvbg; 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 S1729108AbgAUP3C (ORCPT + 99 others); Tue, 21 Jan 2020 10:29:02 -0500 Received: from mail.skyhub.de ([5.9.137.197]:36308 "EHLO mail.skyhub.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727508AbgAUP3C (ORCPT ); Tue, 21 Jan 2020 10:29:02 -0500 Received: from zn.tnic (p200300EC2F0B04001968D368394CA6AD.dip0.t-ipconnect.de [IPv6:2003:ec:2f0b:400:1968:d368:394c:a6ad]) (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 D8E341EC045C; Tue, 21 Jan 2020 16:29:00 +0100 (CET) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=alien8.de; s=dkim; t=1579620541; 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=6y5TIWmgQrQ+KXfFCFI2F/8j7NBQMvB/7z0s7cAgzgI=; b=oQLFfvbgKCydpAmIBQg1afn73trDMTjKEgfBj3YztJm0HfveIFt/SPB/zv4Lku7Lg8wFWJ qgCvIM/dFugZ1O8/MnUlmVADy74ZMiZo0S78shLxg4tRdRcCg5/jqe0U7NrrIMXll7FSaK kqiJ37Kb43b+UOH5yP1m9Wgv0AnwAKg= Date: Tue, 21 Jan 2020 16:28:53 +0100 From: Borislav Petkov To: Qian Cai Cc: Marco Elver , Thomas Gleixner , Ingo Molnar , Dave Hansen , Andy Lutomirski , Peter Zijlstra , the arch/x86 maintainers , LKML Subject: Re: [PATCH -next] x86/mm/pat: silence a data race in cpa_4k_install Message-ID: <20200121152853.GI7808@zn.tnic> References: <20200121151503.2934-1-cai@lca.pw> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline In-Reply-To: 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 Tue, Jan 21, 2020 at 04:19:22PM +0100, Marco Elver wrote: > Could you remove the verbatim copy of my email? Maybe something like: > > "Increments to cpa_4k_install may happen concurrently, as detected by KCSAN: > > <....... the stack traces ......> ... and drop the stack traces and fix your subject to say what you're actually "fixing". -- Regards/Gruss, Boris. https://people.kernel.org/tglx/notes-about-netiquette