From mboxrd@z Thu Jan 1 00:00:00 1970 From: Mark Brown Date: Tue, 28 Jan 2020 11:58:16 +0000 Subject: Re: [PATCH V12] mm/debug: Add tests validating architecture page table helpers Message-Id: <20200128115816.GA4689@sirena.org.uk> MIME-Version: 1 Content-Type: multipart/mixed; boundary="5mCyUwZo2JvN/JJP" List-Id: References: <144F3894-7934-4EC7-A9F9-C6A84CA08C65@lca.pw> In-Reply-To: <144F3894-7934-4EC7-A9F9-C6A84CA08C65@lca.pw> To: Qian Cai Cc: Mark Rutland , linux-ia64@vger.kernel.org, linux-sh@vger.kernel.org, Peter Zijlstra , James Hogan , Tetsuo Handa , Heiko Carstens , Michal Hocko , Linux-MM , Paul Mackerras , sparclinux@vger.kernel.org, Thomas Gleixner , linux-s390@vger.kernel.org, Michael Ellerman , x86@kernel.org, Russell King - ARM Linux , Matthew Wilcox , Steven Price , Jason Gunthorpe , Gerald Schaefer , linux-snps-arc@lists.infradead.org, linux-arm-kernel@lists.infradead.org, Ingo Molnar , Kees Cook , Anshuman Khandual , Masahiro Yamada , Mike Rapoport , "Kirill A . Shutemov" , Dan Williams , Vlastimil Babka , Christophe Leroy , Sri Krishna chowdary , Ard Biesheuvel , Greg Kroah-Hartman , Dave Hansen , linux-mips@vger.kernel.org, Ralf Baechle , linux-kernel@vger.kernel.org, Paul Burton , Vineet Gupta , Martin Schwidefsky , Andrew Morton , linuxppc-dev@lists.ozlabs.org, "David S. Miller" --5mCyUwZo2JvN/JJP Content-Type: text/plain; charset=us-ascii Content-Disposition: inline On Tue, Jan 28, 2020 at 02:12:56AM -0500, Qian Cai wrote: > > On Jan 28, 2020, at 1:13 AM, Christophe Leroy wrote: > > ppc32 an indecent / legacy platform ? Are you kidying ? > > Powerquicc II PRO for instance is fully supported by the > > manufacturer and widely used in many small networking devices. > Of course I forgot about embedded devices. The problem is that how > many developers are actually going to run this debug option on > embedded devices? Much fewer if the code isn't upstream than if it is. This isn't something that every developer is going to enable all the time but that doesn't mean it's not useful, it's more for people doing work on the architectures or on memory management (or who suspect they're running into a relevant problem), and I'm sure some of the automated testing people will enable it. The more barriers there are in place to getting the testsuite up and running the less likely it is that any of these groups will run it regularly. --5mCyUwZo2JvN/JJP Content-Type: application/pgp-signature; name="signature.asc" -----BEGIN PGP SIGNATURE----- iQEzBAABCgAdFiEEreZoqmdXGLWf4p/qJNaLcl1Uh9AFAl4wIdcACgkQJNaLcl1U h9Dslgf+KrZOvdjyO1AcLfLIlE2wA+hRmygG3Gh1YQ9wI6n+03XnA4v7f+7zZaQd 9nylNBzkErkupokycsWYhTEFN7o/tfjVGWte16XdQ1QHQE7npjULPGC5NcVVPfyc qwaW2i5J5TeAuYArz3YCqLvUY6IAJefbxhZbLXTTBnwINIazuBDiAUzsAd/Uy27Y x0YHtX4gXucyNEepoozxS07544hKbMvjTO0tt7P8egTTGwNHz+Uz6sMfUA/Muri7 hIJbxM03+cRn9ZKlTca/PzsXJN87ZLvWwcB0TGz+xI3Bjx2D2Q7Dn+OROr2O8e0z WXNLV2W9WAaBOwArY4IHdeORokpCzg== =j0+e -----END PGP SIGNATURE----- --5mCyUwZo2JvN/JJP-- 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=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, USER_AGENT_SANE_1 autolearn=no 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 0EC8CC33CB3 for ; Tue, 28 Jan 2020 11:58:21 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id DA6692468D for ; Tue, 28 Jan 2020 11:58:20 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1580212700; bh=8RCnYntLRumJXkxzL083Nr34DOd28mEmVE/NIbRTmqQ=; h=Date:From:To:Cc:Subject:References:In-Reply-To:List-ID:From; b=n1fGp8vLzBmGKOOhoN/E3xo840AvXRRIqYWnjvfVZ59kDyoBltjK7bWM09FpEhDuu cfI0dVmGJryLQbS8c/xZdhxyCIwU5AJW13Ok65Wd4V2a1A79TLQF9z6Z7CCQ+BTQ9A HSMCt4yP7fxqK5BqeR6PB/HkUKVvlN1qEH21fMz0= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726141AbgA1L6U (ORCPT ); Tue, 28 Jan 2020 06:58:20 -0500 Received: from foss.arm.com ([217.140.110.172]:55802 "EHLO foss.arm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725903AbgA1L6T (ORCPT ); Tue, 28 Jan 2020 06:58:19 -0500 Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.121.207.14]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id 5AC31101E; Tue, 28 Jan 2020 03:58:18 -0800 (PST) Received: from localhost (unknown [10.37.6.21]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id D65B03F52E; Tue, 28 Jan 2020 03:58:17 -0800 (PST) Date: Tue, 28 Jan 2020 11:58:16 +0000 From: Mark Brown To: Qian Cai Cc: Christophe Leroy , Anshuman Khandual , Linux-MM , Andrew Morton , Vlastimil Babka , Greg Kroah-Hartman , Thomas Gleixner , Mike Rapoport , Jason Gunthorpe , Dan Williams , Peter Zijlstra , Michal Hocko , Mark Rutland , Steven Price , Ard Biesheuvel , Masahiro Yamada , Kees Cook , Tetsuo Handa , Matthew Wilcox , Sri Krishna chowdary , Dave Hansen , Russell King - ARM Linux , Michael Ellerman , Paul Mackerras , Martin Schwidefsky , Heiko Carstens , "David S. Miller" , Vineet Gupta , James Hogan , Paul Burton , Ralf Baechle , "Kirill A . Shutemov" , Gerald Schaefer , Ingo Molnar , linux-snps-arc@lists.infradead.org, linux-mips@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-ia64@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, linux-s390@vger.kernel.org, linux-sh@vger.kernel.org, sparclinux@vger.kernel.org, x86@kernel.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH V12] mm/debug: Add tests validating architecture page table helpers Message-ID: <20200128115816.GA4689@sirena.org.uk> References: <144F3894-7934-4EC7-A9F9-C6A84CA08C65@lca.pw> MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha512; protocol="application/pgp-signature"; boundary="5mCyUwZo2JvN/JJP" Content-Disposition: inline In-Reply-To: <144F3894-7934-4EC7-A9F9-C6A84CA08C65@lca.pw> X-Cookie: Doing gets it done. 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 --5mCyUwZo2JvN/JJP Content-Type: text/plain; charset=us-ascii Content-Disposition: inline On Tue, Jan 28, 2020 at 02:12:56AM -0500, Qian Cai wrote: > > On Jan 28, 2020, at 1:13 AM, Christophe Leroy wrote: > > ppc32 an indecent / legacy platform ? Are you kidying ? > > Powerquicc II PRO for instance is fully supported by the > > manufacturer and widely used in many small networking devices. > Of course I forgot about embedded devices. The problem is that how > many developers are actually going to run this debug option on > embedded devices? Much fewer if the code isn't upstream than if it is. This isn't something that every developer is going to enable all the time but that doesn't mean it's not useful, it's more for people doing work on the architectures or on memory management (or who suspect they're running into a relevant problem), and I'm sure some of the automated testing people will enable it. The more barriers there are in place to getting the testsuite up and running the less likely it is that any of these groups will run it regularly. --5mCyUwZo2JvN/JJP Content-Type: application/pgp-signature; name="signature.asc" -----BEGIN PGP SIGNATURE----- iQEzBAABCgAdFiEEreZoqmdXGLWf4p/qJNaLcl1Uh9AFAl4wIdcACgkQJNaLcl1U h9Dslgf+KrZOvdjyO1AcLfLIlE2wA+hRmygG3Gh1YQ9wI6n+03XnA4v7f+7zZaQd 9nylNBzkErkupokycsWYhTEFN7o/tfjVGWte16XdQ1QHQE7npjULPGC5NcVVPfyc qwaW2i5J5TeAuYArz3YCqLvUY6IAJefbxhZbLXTTBnwINIazuBDiAUzsAd/Uy27Y x0YHtX4gXucyNEepoozxS07544hKbMvjTO0tt7P8egTTGwNHz+Uz6sMfUA/Muri7 hIJbxM03+cRn9ZKlTca/PzsXJN87ZLvWwcB0TGz+xI3Bjx2D2Q7Dn+OROr2O8e0z WXNLV2W9WAaBOwArY4IHdeORokpCzg== =j0+e -----END PGP SIGNATURE----- --5mCyUwZo2JvN/JJP-- 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=-2.5 required=3.0 tests=MAILING_LIST_MULTI, SPF_HELO_NONE,SPF_PASS,USER_AGENT_SANE_1 autolearn=no 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 8B28FC33C9E for ; Tue, 28 Jan 2020 12:01:23 +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 470732173E for ; Tue, 28 Jan 2020 12:01:23 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 470732173E Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=kernel.org 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 486QFD4mNmzDqLb for ; Tue, 28 Jan 2020 23:01:20 +1100 (AEDT) Authentication-Results: lists.ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=arm.com (client-ip=217.140.110.172; helo=foss.arm.com; envelope-from=mark.brown@arm.com; receiver=) Authentication-Results: lists.ozlabs.org; dmarc=fail (p=none dis=none) header.from=kernel.org Received: from foss.arm.com (foss.arm.com [217.140.110.172]) by lists.ozlabs.org (Postfix) with ESMTP id 486Q9r3rmHzDqG0 for ; Tue, 28 Jan 2020 22:58:22 +1100 (AEDT) Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.121.207.14]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id 5AC31101E; Tue, 28 Jan 2020 03:58:18 -0800 (PST) Received: from localhost (unknown [10.37.6.21]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id D65B03F52E; Tue, 28 Jan 2020 03:58:17 -0800 (PST) Date: Tue, 28 Jan 2020 11:58:16 +0000 From: Mark Brown To: Qian Cai Subject: Re: [PATCH V12] mm/debug: Add tests validating architecture page table helpers Message-ID: <20200128115816.GA4689@sirena.org.uk> References: <144F3894-7934-4EC7-A9F9-C6A84CA08C65@lca.pw> MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha512; protocol="application/pgp-signature"; boundary="5mCyUwZo2JvN/JJP" Content-Disposition: inline In-Reply-To: <144F3894-7934-4EC7-A9F9-C6A84CA08C65@lca.pw> X-Cookie: Doing gets it done. 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: Mark Rutland , linux-ia64@vger.kernel.org, linux-sh@vger.kernel.org, Peter Zijlstra , James Hogan , Tetsuo Handa , Heiko Carstens , Michal Hocko , Linux-MM , Paul Mackerras , sparclinux@vger.kernel.org, Thomas Gleixner , linux-s390@vger.kernel.org, x86@kernel.org, Russell King - ARM Linux , Matthew Wilcox , Steven Price , Jason Gunthorpe , Gerald Schaefer , linux-snps-arc@lists.infradead.org, linux-arm-kernel@lists.infradead.org, Ingo Molnar , Kees Cook , Anshuman Khandual , Masahiro Yamada , Mike Rapoport , "Kirill A . Shutemov" , Dan Williams , Vlastimil Babka , Sri Krishna chowdary , Ard Biesheuvel , Greg Kroah-Hartman , Dave Hansen , linux-mips@vger.kernel.org, Ralf Baechle , linux-kernel@vger.kernel.org, Paul Burton , Vineet Gupta , Martin Schwidefsky , Andrew Morton , linuxppc-dev@lists.ozlabs.org, "David S. Miller" Errors-To: linuxppc-dev-bounces+linuxppc-dev=archiver.kernel.org@lists.ozlabs.org Sender: "Linuxppc-dev" --5mCyUwZo2JvN/JJP Content-Type: text/plain; charset=us-ascii Content-Disposition: inline On Tue, Jan 28, 2020 at 02:12:56AM -0500, Qian Cai wrote: > > On Jan 28, 2020, at 1:13 AM, Christophe Leroy wrote: > > ppc32 an indecent / legacy platform ? Are you kidying ? > > Powerquicc II PRO for instance is fully supported by the > > manufacturer and widely used in many small networking devices. > Of course I forgot about embedded devices. The problem is that how > many developers are actually going to run this debug option on > embedded devices? Much fewer if the code isn't upstream than if it is. This isn't something that every developer is going to enable all the time but that doesn't mean it's not useful, it's more for people doing work on the architectures or on memory management (or who suspect they're running into a relevant problem), and I'm sure some of the automated testing people will enable it. The more barriers there are in place to getting the testsuite up and running the less likely it is that any of these groups will run it regularly. --5mCyUwZo2JvN/JJP Content-Type: application/pgp-signature; name="signature.asc" -----BEGIN PGP SIGNATURE----- iQEzBAABCgAdFiEEreZoqmdXGLWf4p/qJNaLcl1Uh9AFAl4wIdcACgkQJNaLcl1U h9Dslgf+KrZOvdjyO1AcLfLIlE2wA+hRmygG3Gh1YQ9wI6n+03XnA4v7f+7zZaQd 9nylNBzkErkupokycsWYhTEFN7o/tfjVGWte16XdQ1QHQE7npjULPGC5NcVVPfyc qwaW2i5J5TeAuYArz3YCqLvUY6IAJefbxhZbLXTTBnwINIazuBDiAUzsAd/Uy27Y x0YHtX4gXucyNEepoozxS07544hKbMvjTO0tt7P8egTTGwNHz+Uz6sMfUA/Muri7 hIJbxM03+cRn9ZKlTca/PzsXJN87ZLvWwcB0TGz+xI3Bjx2D2Q7Dn+OROr2O8e0z WXNLV2W9WAaBOwArY4IHdeORokpCzg== =j0+e -----END PGP SIGNATURE----- --5mCyUwZo2JvN/JJP-- 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=-0.0 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_DBL_ABUSE_MALW, USER_AGENT_SANE_1 autolearn=no 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 2E485C33C9E for ; Tue, 28 Jan 2020 11:58:32 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (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 F0A352173E for ; Tue, 28 Jan 2020 11:58:31 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="uVi+RB+y" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org F0A352173E Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=kernel.org Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-snps-arc-bounces+linux-snps-arc=archiver.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20170209; h=Sender:Content-Type:Cc: List-Subscribe:List-Help:List-Post:List-Archive:List-Unsubscribe:List-Id: In-Reply-To:MIME-Version:References:Message-ID:Subject:To:From:Date:Reply-To: Content-Transfer-Encoding:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=OJI9+XK8f1r8c3U0hftiAH5zCFSsL60fPJSrGPMmjjY=; b=uVi+RB+y2XNv273M2ZJL7Uon4 Ke8F9eJb8bj7L8171ZYsWWuVWJdJIP35SjZjmWB1SOZuFBpsQGSw9tfOhIsfhI2uY84I372eW+V8h Z8R2O9TIkYwQootjqGId7UIUVeu4sskAKLjWcz74rg/9B4rJtc9lDOD3Acy2LK6YNHtJSe8HRPL12 VhKQGPcYOVGM/ATKpz/nIJdOwhlnhS6LK75+2CQRawacJMF2+JkHCtChWC/2dSiWUARv6MKicgHGM 0O/0l5Ell3x2Bw90I5ptVeaPTUKl9rkFDoy7P40nJ/YcLojvIeJvTM4sXQLUpMe83cGBv1tKQ+CkC AQXsFoimg==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1iwPVn-0004kP-2k; Tue, 28 Jan 2020 11:58:31 +0000 Received: from foss.arm.com ([217.140.110.172]) by bombadil.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1iwPVb-0004XO-K7; Tue, 28 Jan 2020 11:58:21 +0000 Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.121.207.14]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id 5AC31101E; Tue, 28 Jan 2020 03:58:18 -0800 (PST) Received: from localhost (unknown [10.37.6.21]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id D65B03F52E; Tue, 28 Jan 2020 03:58:17 -0800 (PST) Date: Tue, 28 Jan 2020 11:58:16 +0000 From: Mark Brown To: Qian Cai Subject: Re: [PATCH V12] mm/debug: Add tests validating architecture page table helpers Message-ID: <20200128115816.GA4689@sirena.org.uk> References: <144F3894-7934-4EC7-A9F9-C6A84CA08C65@lca.pw> MIME-Version: 1.0 In-Reply-To: <144F3894-7934-4EC7-A9F9-C6A84CA08C65@lca.pw> X-Cookie: Doing gets it done. User-Agent: Mutt/1.10.1 (2018-07-13) X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200128_035819_749295_9D54138E X-CRM114-Status: GOOD ( 15.01 ) X-BeenThere: linux-snps-arc@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Linux on Synopsys ARC Processors List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Mark Rutland , linux-ia64@vger.kernel.org, linux-sh@vger.kernel.org, Peter Zijlstra , James Hogan , Tetsuo Handa , Heiko Carstens , Michal Hocko , Linux-MM , Paul Mackerras , sparclinux@vger.kernel.org, Thomas Gleixner , linux-s390@vger.kernel.org, Michael Ellerman , x86@kernel.org, Russell King - ARM Linux , Matthew Wilcox , Steven Price , Jason Gunthorpe , Gerald Schaefer , linux-snps-arc@lists.infradead.org, linux-arm-kernel@lists.infradead.org, Ingo Molnar , Kees Cook , Anshuman Khandual , Masahiro Yamada , Mike Rapoport , "Kirill A . Shutemov" , Dan Williams , Vlastimil Babka , Christophe Leroy , Sri Krishna chowdary , Ard Biesheuvel , Greg Kroah-Hartman , Dave Hansen , linux-mips@vger.kernel.org, Ralf Baechle , linux-kernel@vger.kernel.org, Paul Burton , Vineet Gupta , Martin Schwidefsky , Andrew Morton , linuxppc-dev@lists.ozlabs.org, "David S. Miller" Content-Type: multipart/mixed; boundary="===============2588229620066260045==" Sender: "linux-snps-arc" Errors-To: linux-snps-arc-bounces+linux-snps-arc=archiver.kernel.org@lists.infradead.org --===============2588229620066260045== Content-Type: multipart/signed; micalg=pgp-sha512; protocol="application/pgp-signature"; boundary="5mCyUwZo2JvN/JJP" Content-Disposition: inline --5mCyUwZo2JvN/JJP Content-Type: text/plain; charset=us-ascii Content-Disposition: inline On Tue, Jan 28, 2020 at 02:12:56AM -0500, Qian Cai wrote: > > On Jan 28, 2020, at 1:13 AM, Christophe Leroy wrote: > > ppc32 an indecent / legacy platform ? Are you kidying ? > > Powerquicc II PRO for instance is fully supported by the > > manufacturer and widely used in many small networking devices. > Of course I forgot about embedded devices. The problem is that how > many developers are actually going to run this debug option on > embedded devices? Much fewer if the code isn't upstream than if it is. This isn't something that every developer is going to enable all the time but that doesn't mean it's not useful, it's more for people doing work on the architectures or on memory management (or who suspect they're running into a relevant problem), and I'm sure some of the automated testing people will enable it. The more barriers there are in place to getting the testsuite up and running the less likely it is that any of these groups will run it regularly. --5mCyUwZo2JvN/JJP Content-Type: application/pgp-signature; name="signature.asc" -----BEGIN PGP SIGNATURE----- iQEzBAABCgAdFiEEreZoqmdXGLWf4p/qJNaLcl1Uh9AFAl4wIdcACgkQJNaLcl1U h9Dslgf+KrZOvdjyO1AcLfLIlE2wA+hRmygG3Gh1YQ9wI6n+03XnA4v7f+7zZaQd 9nylNBzkErkupokycsWYhTEFN7o/tfjVGWte16XdQ1QHQE7npjULPGC5NcVVPfyc qwaW2i5J5TeAuYArz3YCqLvUY6IAJefbxhZbLXTTBnwINIazuBDiAUzsAd/Uy27Y x0YHtX4gXucyNEepoozxS07544hKbMvjTO0tt7P8egTTGwNHz+Uz6sMfUA/Muri7 hIJbxM03+cRn9ZKlTca/PzsXJN87ZLvWwcB0TGz+xI3Bjx2D2Q7Dn+OROr2O8e0z WXNLV2W9WAaBOwArY4IHdeORokpCzg== =j0+e -----END PGP SIGNATURE----- --5mCyUwZo2JvN/JJP-- --===============2588229620066260045== Content-Type: text/plain; charset="us-ascii" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit Content-Disposition: inline _______________________________________________ linux-snps-arc mailing list linux-snps-arc@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-snps-arc --===============2588229620066260045==-- 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=-0.0 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_DBL_ABUSE_MALW, USER_AGENT_SANE_1 autolearn=no 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 9DE36C33C9E for ; Tue, 28 Jan 2020 11:58:26 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (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 701072173E for ; Tue, 28 Jan 2020 11:58:26 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="kF0fMQ8y" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 701072173E Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=kernel.org Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20170209; h=Sender:Content-Type:Cc: List-Subscribe:List-Help:List-Post:List-Archive:List-Unsubscribe:List-Id: In-Reply-To:MIME-Version:References:Message-ID:Subject:To:From:Date:Reply-To: Content-Transfer-Encoding:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=EkCCtW4DKboHDSZil8HLw3sJLNh6cln6zpBeTLksD6A=; b=kF0fMQ8yvkC/jQy5pr5gSqtIS QtUQXJTqNdbxtbUhhDWDvR/6RVIkMxfNBF6wslmh1thU9xXJVcctv7JLV+I3czb2MZ58HPIfw+ZK5 FiSl4Ex9QRrxguWV973t6MbdsOeO5tmfe3vnOXlRsvXrzL2OmH2QQwu8HEdt9rmG8rzjAmB4qbthH r/Iq5D5vf+IMlXv/E+ci5FhGAT4ed4d9tOUkg8KTYeubHMbW9LzLvsdIP8p7arr5Wn/otWJ2N9AJ2 SR1XOb0JAwgthzygdcJUQXlmP/Hqv9uOFw58ENcL6azhmoqtwqvmeIqNjy7ajwBuc1O7Ldri8ln6J 7j/pDBuRA==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1iwPVe-0004YL-A9; Tue, 28 Jan 2020 11:58:22 +0000 Received: from foss.arm.com ([217.140.110.172]) by bombadil.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1iwPVb-0004XO-K7; Tue, 28 Jan 2020 11:58:21 +0000 Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.121.207.14]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id 5AC31101E; Tue, 28 Jan 2020 03:58:18 -0800 (PST) Received: from localhost (unknown [10.37.6.21]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id D65B03F52E; Tue, 28 Jan 2020 03:58:17 -0800 (PST) Date: Tue, 28 Jan 2020 11:58:16 +0000 From: Mark Brown To: Qian Cai Subject: Re: [PATCH V12] mm/debug: Add tests validating architecture page table helpers Message-ID: <20200128115816.GA4689@sirena.org.uk> References: <144F3894-7934-4EC7-A9F9-C6A84CA08C65@lca.pw> MIME-Version: 1.0 In-Reply-To: <144F3894-7934-4EC7-A9F9-C6A84CA08C65@lca.pw> X-Cookie: Doing gets it done. User-Agent: Mutt/1.10.1 (2018-07-13) X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200128_035819_749295_9D54138E X-CRM114-Status: GOOD ( 15.01 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Mark Rutland , linux-ia64@vger.kernel.org, linux-sh@vger.kernel.org, Peter Zijlstra , James Hogan , Tetsuo Handa , Heiko Carstens , Michal Hocko , Linux-MM , Paul Mackerras , sparclinux@vger.kernel.org, Thomas Gleixner , linux-s390@vger.kernel.org, Michael Ellerman , x86@kernel.org, Russell King - ARM Linux , Matthew Wilcox , Steven Price , Jason Gunthorpe , Gerald Schaefer , linux-snps-arc@lists.infradead.org, linux-arm-kernel@lists.infradead.org, Ingo Molnar , Kees Cook , Anshuman Khandual , Masahiro Yamada , Mike Rapoport , "Kirill A . Shutemov" , Dan Williams , Vlastimil Babka , Christophe Leroy , Sri Krishna chowdary , Ard Biesheuvel , Greg Kroah-Hartman , Dave Hansen , linux-mips@vger.kernel.org, Ralf Baechle , linux-kernel@vger.kernel.org, Paul Burton , Vineet Gupta , Martin Schwidefsky , Andrew Morton , linuxppc-dev@lists.ozlabs.org, "David S. Miller" Content-Type: multipart/mixed; boundary="===============6062121306970978950==" Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org --===============6062121306970978950== Content-Type: multipart/signed; micalg=pgp-sha512; protocol="application/pgp-signature"; boundary="5mCyUwZo2JvN/JJP" Content-Disposition: inline --5mCyUwZo2JvN/JJP Content-Type: text/plain; charset=us-ascii Content-Disposition: inline On Tue, Jan 28, 2020 at 02:12:56AM -0500, Qian Cai wrote: > > On Jan 28, 2020, at 1:13 AM, Christophe Leroy wrote: > > ppc32 an indecent / legacy platform ? Are you kidying ? > > Powerquicc II PRO for instance is fully supported by the > > manufacturer and widely used in many small networking devices. > Of course I forgot about embedded devices. The problem is that how > many developers are actually going to run this debug option on > embedded devices? Much fewer if the code isn't upstream than if it is. This isn't something that every developer is going to enable all the time but that doesn't mean it's not useful, it's more for people doing work on the architectures or on memory management (or who suspect they're running into a relevant problem), and I'm sure some of the automated testing people will enable it. The more barriers there are in place to getting the testsuite up and running the less likely it is that any of these groups will run it regularly. --5mCyUwZo2JvN/JJP Content-Type: application/pgp-signature; name="signature.asc" -----BEGIN PGP SIGNATURE----- iQEzBAABCgAdFiEEreZoqmdXGLWf4p/qJNaLcl1Uh9AFAl4wIdcACgkQJNaLcl1U h9Dslgf+KrZOvdjyO1AcLfLIlE2wA+hRmygG3Gh1YQ9wI6n+03XnA4v7f+7zZaQd 9nylNBzkErkupokycsWYhTEFN7o/tfjVGWte16XdQ1QHQE7npjULPGC5NcVVPfyc qwaW2i5J5TeAuYArz3YCqLvUY6IAJefbxhZbLXTTBnwINIazuBDiAUzsAd/Uy27Y x0YHtX4gXucyNEepoozxS07544hKbMvjTO0tt7P8egTTGwNHz+Uz6sMfUA/Muri7 hIJbxM03+cRn9ZKlTca/PzsXJN87ZLvWwcB0TGz+xI3Bjx2D2Q7Dn+OROr2O8e0z WXNLV2W9WAaBOwArY4IHdeORokpCzg== =j0+e -----END PGP SIGNATURE----- --5mCyUwZo2JvN/JJP-- --===============6062121306970978950== Content-Type: text/plain; charset="us-ascii" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit Content-Disposition: inline _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel --===============6062121306970978950==--