Received: by 2002:a4a:301c:0:0:0:0:0 with SMTP id q28-v6csp527713oof; Tue, 25 Sep 2018 00:51:30 -0700 (PDT) X-Google-Smtp-Source: ACcGV63dHGQV0cV2LunJjZdjBos9+MeL7Fyfwrzs4nnN90Ic8i48mosR7qB0gGhjhx3xCNd3sIRv X-Received: by 2002:a63:ae4d:: with SMTP id e13-v6mr2172971pgp.315.1537861890698; Tue, 25 Sep 2018 00:51:30 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1537861890; cv=none; d=google.com; s=arc-20160816; b=0TamZF1Jk0Rj4xFdCvRXFQ8KTE0SAcmfoo+DHrfaYDQqlyJ752ySTkPecr1hZWmbWS zpDyUftnIuH1PE0ge6ZNQS+pYWePtefwoDBddXa81rM08oCAENPapnd9ARzJgi7960+L ej2hYzN8loPaZ98SGdLjU5iBwTEqrxxF9vkACNGeIE2JqU7grkLwrE7uHeKYaml8Nu0t ATfi2m138qcBI4ciEL+q5xhAyrDQwDVmeJgp1PXGyYjOpCSpiVLCmZ4c127LEuqyWC0u czPGzGQE+9DlsusO66NrO0OrWhu4yvaSmxkWZtEUKq/frEZHDmBD3lWRaPEtGh2fKi4z xJ6Q== 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=REfaGMQXHPOfPBlLXAYZwWmlPj9B/zRWFwmlafFO/ws=; b=CvaX0Ek4YBHJVVp6aqMhLzNi46B5vYwQEMytxcyTxEDyZOtLMlGDRCMe67DGwEJuhx DQeI/N/9l/aycvMJ/nBDECysQt8bxxP6pkGhIjpHyXNn5goHHmyMwy6x8XBcycU+XOvv giOWbLjBzYdcahvs0wrbr3PL6uHln7yINpEYwyAQaapVAre+5afizd0ByoHeQnHqt6co yXSVSictnIG+bNPuWR9rwrveGkrqLfWwDFCYPFxUgCUOvGsesv/stRi2/RgA1rKBLo5r MMn3V245rU2F/+EUyXKwKiM1BJblMBN4833KFLhAdUUrVKkbMJpkijEALsiRi1upFRbn eTOA== ARC-Authentication-Results: i=1; mx.google.com; dkim=fail (test mode) header.i=@8bytes.org header.s=mail-1 header.b=GF5zqXXt; 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=fail (p=NONE sp=NONE dis=NONE) header.from=8bytes.org Return-Path: Received: from vger.kernel.org (vger.kernel.org. [209.132.180.67]) by mx.google.com with ESMTP id i16-v6si1703543pgj.462.2018.09.25.00.51.15; Tue, 25 Sep 2018 00:51:30 -0700 (PDT) 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=fail (test mode) header.i=@8bytes.org header.s=mail-1 header.b=GF5zqXXt; 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=fail (p=NONE sp=NONE dis=NONE) header.from=8bytes.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728659AbeIYN5X (ORCPT + 99 others); Tue, 25 Sep 2018 09:57:23 -0400 Received: from 8bytes.org ([81.169.241.247]:60654 "EHLO theia.8bytes.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727341AbeIYN5W (ORCPT ); Tue, 25 Sep 2018 09:57:22 -0400 Received: by theia.8bytes.org (Postfix, from userid 1000) id 63519760; Tue, 25 Sep 2018 09:51:04 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=simple/simple; d=8bytes.org; s=mail-1; t=1537861864; bh=NZEvsAeuP11md5AnRWAyYD6mYnhVrAUh5JP982D0f9U=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=GF5zqXXtqE+1J/rpAbQzPleeAaeOdqX3rAt5lSW2waqBQiUWyx6/3bTwftoCGEPQf knxUfgwUcKYQ+l/auIuZxyEOrpTpMUW9uFSHr8keQdyxA2ZFbfpY8OOFyIuP9vuAXV sTva8dmIxcXga0J5esfpOCjM1+OyAK8dzauNRsXbx+zifX50PiRHMvoGIRwjJN3y0t ofqSapiOT8BkqCKIpYkW8hurhxLWvlM4LazzelZ4nU0uDjfGeBG42SvAYbECLHmROT i4erCprgEJfutUY7/yA2DcjFstA7C1Qs1A/hpqauyAIOLFlXQpGjfVBDxmjBuAAQHk qsAc+sG9gIhZA== Date: Tue, 25 Sep 2018 09:51:04 +0200 From: Joerg Roedel To: Geert Uytterhoeven Cc: gary.hook@amd.com, Linux IOMMU , Linux Kernel Mailing List , Arnd Bergmann , Masahiro Yamada , linux-kbuild Subject: Re: [PATCH v9 2/2] iommu/amd: Add basic debugfs infrastructure for AMD IOMMU Message-ID: <20180925075104.GA18287@8bytes.org> References: <152883965482.1936.13657625103232933481.stgit@taos> <152883969032.1936.15155267369758178246.stgit@taos> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.5.24 (2015-08-30) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Mon, Aug 27, 2018 at 08:56:50AM +0200, Geert Uytterhoeven wrote: > If it is that bad, shouldn't this option be protected by some Kconfig > trickery to avoid it being enabled in allmodconfig/allyesconfig builds? It is fine to have it in allmodconfig/allyesconfig, I just don't want any distro-kernel enable it so that these internals become a user-space ABI or leak security sensitive data on everyones system. This is intended to be a pure debugging feature for development. Regards, Joerg