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=-8.1 required=3.0 tests=DKIM_INVALID,DKIM_SIGNED, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,USER_AGENT_MUTT autolearn=unavailable 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 DC5FFC31E48 for ; Wed, 12 Jun 2019 05:18:18 +0000 (UTC) Received: from lists.ozlabs.org (lists.ozlabs.org [203.11.71.2]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 003EC20874 for ; Wed, 12 Jun 2019 05:18:17 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (1024-bit key) header.d=alien8.de header.i=@alien8.de header.b="rneOP3I/" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 003EC20874 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=alien8.de Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=linuxppc-dev-bounces+linuxppc-dev=archiver.kernel.org@lists.ozlabs.org Received: from lists.ozlabs.org (lists.ozlabs.org [IPv6:2401:3900:2:1::3]) by lists.ozlabs.org (Postfix) with ESMTP id 45NwBH4TvbzDr2m for ; Wed, 12 Jun 2019 15:18:15 +1000 (AEST) Authentication-Results: lists.ozlabs.org; spf=pass (mailfrom) smtp.mailfrom=alien8.de (client-ip=2a01:4f8:190:11c2::b:1457; helo=mail.skyhub.de; envelope-from=bp@alien8.de; receiver=) Authentication-Results: lists.ozlabs.org; dmarc=pass (p=none dis=none) header.from=alien8.de Authentication-Results: lists.ozlabs.org; dkim=pass (1024-bit key; unprotected) header.d=alien8.de header.i=@alien8.de header.b="rneOP3I/"; dkim-atps=neutral Received: from mail.skyhub.de (mail.skyhub.de [IPv6:2a01:4f8:190:11c2::b:1457]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by lists.ozlabs.org (Postfix) with ESMTPS id 45Nw8V2NDczDqlR for ; Wed, 12 Jun 2019 15:16:39 +1000 (AEST) Received: from zn.tnic (p200300EC2F0A6800EC6A653BF86B372A.dip0.t-ipconnect.de [IPv6:2003:ec:2f0a:6800:ec6a:653b:f86b:372a]) (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 BA42D1EC0997; Wed, 12 Jun 2019 07:16:31 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=alien8.de; s=dkim; t=1560316591; 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=uZvUrReB+RHLzSd6kF/1jCDl/jkPW47i90g2lP+OZWI=; b=rneOP3I/FIcX/zUChYjTMNqLmHOhJ9uhQISz3P+01lalYd8uNCQcDcblA+dzdoRgiLRlzz DF6tlZQzEX3JOpUeN5oXSy45m3PJqlH7D/Vuz7dsX+ZgGRJB1IJmgDnx3BvoXK3lDQfFIj +JvMJTzNX1N/CKAPKQpaI/76LsvEzBk= Date: Wed, 12 Jun 2019 07:16:24 +0200 From: Borislav Petkov To: Zhen Lei Subject: Re: [PATCH v8 2/7] x86/dma: use IS_ENABLED() to simplify the code Message-ID: <20190612051624.GF32652@zn.tnic> References: <20190530034831.4184-1-thunder.leizhen@huawei.com> <20190530034831.4184-3-thunder.leizhen@huawei.com> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline In-Reply-To: <20190530034831.4184-3-thunder.leizhen@huawei.com> User-Agent: Mutt/1.10.1 (2018-07-13) X-BeenThere: linuxppc-dev@lists.ozlabs.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: linux-ia64 , Sebastian Ott , linux-doc , Hanjun Guo , Heiko Carstens , Paul Mackerras , "H . Peter Anvin" , linux-s390 , Jonathan Corbet , Jean-Philippe Brucker , Joerg Roedel , x86 , Ingo Molnar , Fenghua Yu , Will Deacon , John Garry , linuxppc-dev , Thomas Gleixner , Gerald Schaefer , Tony Luck , David Woodhouse , linux-kernel , iommu , Martin Schwidefsky , Robin Murphy Errors-To: linuxppc-dev-bounces+linuxppc-dev=archiver.kernel.org@lists.ozlabs.org Sender: "Linuxppc-dev" On Thu, May 30, 2019 at 11:48:26AM +0800, Zhen Lei wrote: > This patch removes the ifdefs around CONFIG_IOMMU_DEFAULT_PASSTHROUGH to > improve readablity. Avoid having "This patch" or "This commit" in the commit message. It is tautologically useless. Also, do $ git grep 'This patch' Documentation/process for more details. > Signed-off-by: Zhen Lei > --- > arch/x86/kernel/pci-dma.c | 7 ++----- > 1 file changed, 2 insertions(+), 5 deletions(-) > > diff --git a/arch/x86/kernel/pci-dma.c b/arch/x86/kernel/pci-dma.c > index dcd272dbd0a9330..9f2b19c35a060df 100644 > --- a/arch/x86/kernel/pci-dma.c > +++ b/arch/x86/kernel/pci-dma.c > @@ -43,11 +43,8 @@ > * It is also possible to disable by default in kernel config, and enable with > * iommu=nopt at boot time. > */ > -#ifdef CONFIG_IOMMU_DEFAULT_PASSTHROUGH > -int iommu_pass_through __read_mostly = 1; > -#else > -int iommu_pass_through __read_mostly; > -#endif > +int iommu_pass_through __read_mostly = > + IS_ENABLED(CONFIG_IOMMU_DEFAULT_PASSTHROUGH); Let that line stick out. Thx. -- Regards/Gruss, Boris. Good mailing practices for 400: avoid top-posting and trim the reply.