From mboxrd@z Thu Jan 1 00:00:00 1970 From: Russell King - ARM Linux admin Subject: Re: [PATCH V13] mm/debug: Add tests validating architecture page table helpers Date: Tue, 11 Feb 2020 09:24:48 +0000 Message-ID: <20200211092448.GI25745@shell.armlinux.org.uk> References: <202002060619.wEOdAZU1%lkp@intel.com> <78d3ce6b-e100-2561-6b09-124c29731d1a@arm.com> <20200209205231.44d098f8749e88190b8ba10c@linux-foundation.org> <955229f7-f161-f720-0e75-a3163f63817d@arm.com> <20200210100200.GB25745@shell.armlinux.org.uk> <7cb3a5bb-eaea-a01c-4047-e3c000b7ad1d@c-s.fr> <20200210110639.GC25745@shell.armlinux.org.uk> <82317d50-57a2-ce84-7557-21635d57448e@arm.com> Mime-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Return-path: DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20170209; h=Sender: Content-Transfer-Encoding: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-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=IEweK1Oe6le969jj6/9ySSvupCzyT07lVN1MEsV+j8U=; b=m8oU2T4leVwjun XgvIknlloBoeRz1uO5JRqK8+kQpQykRJBALjNS1NvrDwfhkTsGlfL4e5cfwF2F06M2EUfgxKkIfmn shRhh8oRqhY+G7BCaoN1hCXt+tBnMPlDGonya8WStJc0dhTjzoiqALp2oOJMODSsJoc2VhM1oFow+ sO5AZz1ETAol5E5vajcTPPy6UfGFK7ByYDytyh9N2wnlsBU2+Mes7cQjLuyLaZgG4zDG62P+TV15z v7wjqReBxEkOu6JTjMD868vtSrNVcIiPOTftuZ1oQiRMHtYsWs88EsasdTVTlQvOuQjMgG2v0KunE KBprGQVPx9W6SANzpSYg==; DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=armlinux.org.uk; s=pandora-2019; h=Sender:In-Reply-To: Content-Transfer-Encoding:Content-Type:MIME-Version:References:Message-ID: Subject:Cc:To:From:Date:Reply-To:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Id: List-Help:List-Unsubscribe:List-Subscribe:List-Post:List-Owner:List-Archive; bh=t+QeGYCEkcUs6b5ZM+NOCwDbOmiMQnW8+LwY6bloPz4=; b=qjHd2cY4lTS/cb7bo4SP21lEI sUw+WwOCTcr39efAZGJoSf5pc1rkF99mBPElJh5dxtxrVXkd5r8pZ35M3ZfVodX8d45wYDbdrWO0J obey6q5d1eoDdzy+zGQoBw5EdxokxL4V8Mqrm7+DwCQhVJE0SpExjvX1qu/Rr98SN6lpOpUPiz2SK Fo8muWV7WCBNkIipNrx1cXJrdbQhgjhUVCjm9k1TQTH0PBfFMstbJP/LB7eavJb67MdKLpZ/i7Fx+ 7xOdkDULV9Ftpxwe57kIuG/nvVpEp+3i9oni28P56FkXFFyOxHOLqnr33ssRmsiyeDJNxiWaPVYmm 0QKe2yYMg==; Content-Disposition: inline In-Reply-To: List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-snps-arc" Errors-To: linux-snps-arc-bounces+gla-linux-snps-arc=m.gmane-mx.org@lists.infradead.org To: Christophe Leroy Cc: Mark Rutland , uclinux-h8-devel@lists.sourceforge.jp, linux-m68k@vger.kernel.org, linux-ia64@vger.kernel.org, linux-sh@vger.kernel.org, Peter Zijlstra , James Hogan , Tetsuo Handa , Heiko Carstens , Michal Hocko , linux-mm@kvack.org, Paul Mackerras , sparclinux@vger.kernel.org, linux-hexagon@vger.kernel.org, linux-riscv@lists.infradead.org, Thomas Gleixner , linux-s390@vger.kernel.org, kbuild test robot , Yoshinori Sato , Max Filippov , Michael Ellerman , x86@kernel.org, Matthew Wilcox , Steven Price , Jason Gunthorpe , Geert Uytterhoeven On Tue, Feb 11, 2020 at 06:33:47AM +0100, Christophe Leroy wrote: > = > = > Le 11/02/2020 =E0 03:25, Anshuman Khandual a =E9crit=A0: > > = > > = > > On 02/10/2020 04:36 PM, Russell King - ARM Linux admin wrote: > > > There are good reasons for the way ARM does stuff. The generic crap = was > > > written without regard for the circumstances that ARM has, and thus is > > > entirely unsuitable for 32-bit ARM. > > = > > Since we dont have an agreement here, lets just settle with disabling t= he > > test for now on platforms where the build fails. CONFIG_EXPERT is enabl= ing > > this test for better adaptability and coverage, hence how about re fram= ing > > the config like this ? This at the least conveys the fact that EXPERT o= nly > > works when platform is neither IA64 or ARM. > = > Agreed > = > > = > > config DEBUG_VM_PGTABLE > > bool "Debug arch page table for semantics compliance" > > depends on MMU > > depends on ARCH_HAS_DEBUG_VM_PGTABLE || (EXPERT && !(IA64 || ARM)) > = > I think it's maybe better to have a dedicated depends line: > = > depends on !IA64 && !ARM > depends on ARCH_HAS_DEBUG_VM_PGTABLE || EXPERT > = > The day arm and/or ia64 is ready for building the test, we can remove that > depends. Never going to happen as its technically infeasible, sorry. -- = RMK's Patch system: https://www.armlinux.org.uk/developer/patches/ FTTC broadband for 0.8mile line in suburbia: sync at 12.1Mbps down 622kbps = up According to speedtest.net: 11.9Mbps down 500kbps up 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=-2.3 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE, SPF_PASS,URIBL_BLOCKED,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 86675C352A3 for ; Tue, 11 Feb 2020 09:27:00 +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 5C3B52051A for ; 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charset=iso-8859-1 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: 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-20200211_012651_164082_9B68A2D6 X-CRM114-Status: GOOD ( 15.04 ) X-BeenThere: linux-riscv@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 , uclinux-h8-devel@lists.sourceforge.jp, linux-m68k@vger.kernel.org, linux-ia64@vger.kernel.org, linux-sh@vger.kernel.org, Peter Zijlstra , James Hogan , Tetsuo Handa , Heiko Carstens , Michal Hocko , linux-mm@kvack.org, Paul Mackerras , sparclinux@vger.kernel.org, linux-hexagon@vger.kernel.org, linux-riscv@lists.infradead.org, Thomas Gleixner , linux-s390@vger.kernel.org, kbuild test robot , Yoshinori Sato , Max Filippov , Michael Ellerman , x86@kernel.org, Matthew Wilcox , Steven Price , Jason Gunthorpe , Geert Uytterhoeven , Gerald Schaefer , Mark Salter , Matt Turner , linux-snps-arc@lists.infradead.org, Ingo Molnar , linux-xtensa@linux-xtensa.org, Kees Cook , Anshuman Khandual , Masahiro Yamada , linux-alpha@vger.kernel.org, Aurelien Jacquiot , linux-c6x-dev@linux-c6x.org, Mark Brown , Ivan Kokshaysky , Paul Walmsley , "Kirill A . Shutemov" , Dan Williams , Guan Xuetao , Vlastimil Babka , Richard Henderson , linux-arm-kernel@lists.infradead.org, Chris Zankel , Michal Simek , kbuild-all@lists.01.org, Brian Cain , Ard Biesheuvel , Greg Kroah-Hartman , Dave Hansen , linux-mips@vger.kernel.org, Ralf Baechle , linux-kernel@vger.kernel.org, Paul Burton , Mike Rapoport , Palmer Dabbelt , Vineet Gupta , Martin Schwidefsky , Qian Cai , Andrew Morton , linuxppc-dev@lists.ozlabs.org, "David S. Miller" Sender: "linux-riscv" Errors-To: linux-riscv-bounces+infradead-linux-riscv=archiver.kernel.org@lists.infradead.org On Tue, Feb 11, 2020 at 06:33:47AM +0100, Christophe Leroy wrote: > > > Le 11/02/2020 à 03:25, Anshuman Khandual a écrit : > > > > > > On 02/10/2020 04:36 PM, Russell King - ARM Linux admin wrote: > > > There are good reasons for the way ARM does stuff. The generic crap was > > > written without regard for the circumstances that ARM has, and thus is > > > entirely unsuitable for 32-bit ARM. > > > > Since we dont have an agreement here, lets just settle with disabling the > > test for now on platforms where the build fails. CONFIG_EXPERT is enabling > > this test for better adaptability and coverage, hence how about re framing > > the config like this ? This at the least conveys the fact that EXPERT only > > works when platform is neither IA64 or ARM. > > Agreed > > > > > config DEBUG_VM_PGTABLE > > bool "Debug arch page table for semantics compliance" > > depends on MMU > > depends on ARCH_HAS_DEBUG_VM_PGTABLE || (EXPERT && !(IA64 || ARM)) > > I think it's maybe better to have a dedicated depends line: > > depends on !IA64 && !ARM > depends on ARCH_HAS_DEBUG_VM_PGTABLE || EXPERT > > The day arm and/or ia64 is ready for building the test, we can remove that > depends. Never going to happen as its technically infeasible, sorry. -- RMK's Patch system: https://www.armlinux.org.uk/developer/patches/ FTTC broadband for 0.8mile line in suburbia: sync at 12.1Mbps down 622kbps up According to speedtest.net: 11.9Mbps down 500kbps up 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=-2.3 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE, SPF_PASS,URIBL_BLOCKED,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 072C9C352A3 for ; Tue, 11 Feb 2020 09:26:58 +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 CC6212051A for ; 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bh=t+QeGYCEkcUs6b5ZM+NOCwDbOmiMQnW8+LwY6bloPz4=; b=qjHd2cY4lTS/cb7bo4SP21lEI sUw+WwOCTcr39efAZGJoSf5pc1rkF99mBPElJh5dxtxrVXkd5r8pZ35M3ZfVodX8d45wYDbdrWO0J obey6q5d1eoDdzy+zGQoBw5EdxokxL4V8Mqrm7+DwCQhVJE0SpExjvX1qu/Rr98SN6lpOpUPiz2SK Fo8muWV7WCBNkIipNrx1cXJrdbQhgjhUVCjm9k1TQTH0PBfFMstbJP/LB7eavJb67MdKLpZ/i7Fx+ 7xOdkDULV9Ftpxwe57kIuG/nvVpEp+3i9oni28P56FkXFFyOxHOLqnr33ssRmsiyeDJNxiWaPVYmm 0QKe2yYMg==; Received: from shell.armlinux.org.uk ([2001:4d48:ad52:3201:5054:ff:fe00:4ec]:38850) by pandora.armlinux.org.uk with esmtpsa (TLSv1.2:ECDHE-RSA-AES256-GCM-SHA384:256) (Exim 4.90_1) (envelope-from ) id 1j1Rn0-0003iZ-Ul; Tue, 11 Feb 2020 09:25:07 +0000 Received: from linux by shell.armlinux.org.uk with local (Exim 4.92) (envelope-from ) id 1j1Rmi-0000Jw-RR; Tue, 11 Feb 2020 09:24:48 +0000 Date: Tue, 11 Feb 2020 09:24:48 +0000 From: Russell King - ARM Linux admin To: Christophe Leroy Subject: Re: [PATCH V13] mm/debug: Add tests validating architecture page table helpers Message-ID: <20200211092448.GI25745@shell.armlinux.org.uk> References: <202002060619.wEOdAZU1%lkp@intel.com> <78d3ce6b-e100-2561-6b09-124c29731d1a@arm.com> <20200209205231.44d098f8749e88190b8ba10c@linux-foundation.org> <955229f7-f161-f720-0e75-a3163f63817d@arm.com> <20200210100200.GB25745@shell.armlinux.org.uk> <7cb3a5bb-eaea-a01c-4047-e3c000b7ad1d@c-s.fr> <20200210110639.GC25745@shell.armlinux.org.uk> <82317d50-57a2-ce84-7557-21635d57448e@arm.com> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: 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-20200211_012651_164082_9B68A2D6 X-CRM114-Status: GOOD ( 15.04 ) 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 , uclinux-h8-devel@lists.sourceforge.jp, linux-m68k@vger.kernel.org, linux-ia64@vger.kernel.org, linux-sh@vger.kernel.org, Peter Zijlstra , James Hogan , Tetsuo Handa , Heiko Carstens , Michal Hocko , linux-mm@kvack.org, Paul Mackerras , sparclinux@vger.kernel.org, linux-hexagon@vger.kernel.org, linux-riscv@lists.infradead.org, Thomas Gleixner , linux-s390@vger.kernel.org, kbuild test robot , Yoshinori Sato , Max Filippov , Michael Ellerman , x86@kernel.org, Matthew Wilcox , Steven Price , Jason Gunthorpe , Geert Uytterhoeven , Gerald Schaefer , Mark Salter , Matt Turner , linux-snps-arc@lists.infradead.org, Ingo Molnar , linux-xtensa@linux-xtensa.org, Kees Cook , Anshuman Khandual , Masahiro Yamada , linux-alpha@vger.kernel.org, Aurelien Jacquiot , linux-c6x-dev@linux-c6x.org, Mark Brown , Ivan Kokshaysky , Paul Walmsley , "Kirill A . Shutemov" , Dan Williams , Guan Xuetao , Vlastimil Babka , Richard Henderson , linux-arm-kernel@lists.infradead.org, Chris Zankel , Michal Simek , kbuild-all@lists.01.org, Brian Cain , Ard Biesheuvel , Greg Kroah-Hartman , Dave Hansen , linux-mips@vger.kernel.org, Ralf Baechle , linux-kernel@vger.kernel.org, Paul Burton , Mike Rapoport , Palmer Dabbelt , Vineet Gupta , Martin Schwidefsky , Qian Cai , Andrew Morton , linuxppc-dev@lists.ozlabs.org, "David S. Miller" Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Sender: "linux-snps-arc" Errors-To: linux-snps-arc-bounces+linux-snps-arc=archiver.kernel.org@lists.infradead.org On Tue, Feb 11, 2020 at 06:33:47AM +0100, Christophe Leroy wrote: > = > = > Le 11/02/2020 =E0 03:25, Anshuman Khandual a =E9crit=A0: > > = > > = > > On 02/10/2020 04:36 PM, Russell King - ARM Linux admin wrote: > > > There are good reasons for the way ARM does stuff. The generic crap = was > > > written without regard for the circumstances that ARM has, and thus is > > > entirely unsuitable for 32-bit ARM. > > = > > Since we dont have an agreement here, lets just settle with disabling t= he > > test for now on platforms where the build fails. CONFIG_EXPERT is enabl= ing > > this test for better adaptability and coverage, hence how about re fram= ing > > the config like this ? This at the least conveys the fact that EXPERT o= nly > > works when platform is neither IA64 or ARM. > = > Agreed > = > > = > > config DEBUG_VM_PGTABLE > > bool "Debug arch page table for semantics compliance" > > depends on MMU > > depends on ARCH_HAS_DEBUG_VM_PGTABLE || (EXPERT && !(IA64 || ARM)) > = > I think it's maybe better to have a dedicated depends line: > = > depends on !IA64 && !ARM > depends on ARCH_HAS_DEBUG_VM_PGTABLE || EXPERT > = > The day arm and/or ia64 is ready for building the test, we can remove that > depends. Never going to happen as its technically infeasible, sorry. -- = RMK's Patch system: https://www.armlinux.org.uk/developer/patches/ FTTC broadband for 0.8mile line in suburbia: sync at 12.1Mbps down 622kbps = up According to speedtest.net: 11.9Mbps down 500kbps up _______________________________________________ linux-snps-arc mailing list linux-snps-arc@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-snps-arc From mboxrd@z Thu Jan 1 00:00:00 1970 Content-Type: multipart/mixed; boundary="===============5528528642435494683==" MIME-Version: 1.0 From: Russell King - ARM Linux admin To: kbuild-all@lists.01.org Subject: Re: [PATCH V13] mm/debug: Add tests validating architecture page table helpers Date: Tue, 11 Feb 2020 09:24:48 +0000 Message-ID: <20200211092448.GI25745@shell.armlinux.org.uk> In-Reply-To: List-Id: --===============5528528642435494683== Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable On Tue, Feb 11, 2020 at 06:33:47AM +0100, Christophe Leroy wrote: > = > = > Le 11/02/2020 =C3=A0 03:25, Anshuman Khandual a =C3=A9crit=C2=A0: > > = > > = > > On 02/10/2020 04:36 PM, Russell King - ARM Linux admin wrote: > > > There are good reasons for the way ARM does stuff. The generic crap = was > > > written without regard for the circumstances that ARM has, and thus is > > > entirely unsuitable for 32-bit ARM. > > = > > Since we dont have an agreement here, lets just settle with disabling t= he > > test for now on platforms where the build fails. CONFIG_EXPERT is enabl= ing > > this test for better adaptability and coverage, hence how about re fram= ing > > the config like this ? This at the least conveys the fact that EXPERT o= nly > > works when platform is neither IA64 or ARM. > = > Agreed > = > > = > > config DEBUG_VM_PGTABLE > > bool "Debug arch page table for semantics compliance" > > depends on MMU > > depends on ARCH_HAS_DEBUG_VM_PGTABLE || (EXPERT && !(IA64 || ARM)) > = > I think it's maybe better to have a dedicated depends line: > = > depends on !IA64 && !ARM > depends on ARCH_HAS_DEBUG_VM_PGTABLE || EXPERT > = > The day arm and/or ia64 is ready for building the test, we can remove that > depends. Never going to happen as its technically infeasible, sorry. -- = RMK's Patch system: https://www.armlinux.org.uk/developer/patches/ FTTC broadband for 0.8mile line in suburbia: sync at 12.1Mbps down 622kbps = up According to speedtest.net: 11.9Mbps down 500kbps up --===============5528528642435494683==-- 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=-2.1 required=3.0 tests=DKIM_INVALID,DKIM_SIGNED, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, URIBL_BLOCKED,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 03205C352A3 for ; Tue, 11 Feb 2020 10:38:45 +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 56019206D7 for ; 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Received: from shell.armlinux.org.uk ([2001:4d48:ad52:3201:5054:ff:fe00:4ec]:38850) by pandora.armlinux.org.uk with esmtpsa (TLSv1.2:ECDHE-RSA-AES256-GCM-SHA384:256) (Exim 4.90_1) (envelope-from ) id 1j1Rn0-0003iZ-Ul; Tue, 11 Feb 2020 09:25:07 +0000 Received: from linux by shell.armlinux.org.uk with local (Exim 4.92) (envelope-from ) id 1j1Rmi-0000Jw-RR; Tue, 11 Feb 2020 09:24:48 +0000 Date: Tue, 11 Feb 2020 09:24:48 +0000 From: Russell King - ARM Linux admin To: Christophe Leroy Subject: Re: [PATCH V13] mm/debug: Add tests validating architecture page table helpers Message-ID: <20200211092448.GI25745@shell.armlinux.org.uk> References: <202002060619.wEOdAZU1%lkp@intel.com> <78d3ce6b-e100-2561-6b09-124c29731d1a@arm.com> <20200209205231.44d098f8749e88190b8ba10c@linux-foundation.org> <955229f7-f161-f720-0e75-a3163f63817d@arm.com> <20200210100200.GB25745@shell.armlinux.org.uk> <7cb3a5bb-eaea-a01c-4047-e3c000b7ad1d@c-s.fr> <20200210110639.GC25745@shell.armlinux.org.uk> <82317d50-57a2-ce84-7557-21635d57448e@arm.com> MIME-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: User-Agent: Mutt/1.10.1 (2018-07-13) X-Mailman-Approved-At: Tue, 11 Feb 2020 21:36:56 +1100 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 , uclinux-h8-devel@lists.sourceforge.jp, linux-m68k@vger.kernel.org, linux-ia64@vger.kernel.org, linux-sh@vger.kernel.org, Peter Zijlstra , James Hogan , Tetsuo Handa , Heiko Carstens , Michal Hocko , linux-mm@kvack.org, Paul Mackerras , sparclinux@vger.kernel.org, linux-hexagon@vger.kernel.org, linux-riscv@lists.infradead.org, Thomas Gleixner , linux-s390@vger.kernel.org, kbuild test robot , Yoshinori Sato , Max Filippov , x86@kernel.org, Matthew Wilcox , Steven Price , Jason Gunthorpe , Geert Uytterhoeven , Gerald Schaefer , Mark Salter , Matt Turner , linux-snps-arc@lists.infradead.org, Ingo Molnar , linux-xtensa@linux-xtensa.org, Kees Cook , Anshuman Khandual , Masahiro Yamada , linux-alpha@vger.kernel.org, Aurelien Jacquiot , linux-c6x-dev@linux-c6x.org, Mark Brown , Ivan Kokshaysky , Paul Walmsley , "Kirill A . Shutemov" , Dan Williams , Guan Xuetao , Vlastimil Babka , Richard Henderson , linux-arm-kernel@lists.infradead.org, Chris Zankel , Michal Simek , kbuild-all@lists.01.org, Brian Cain , Ard Biesheuvel , Greg Kroah-Hartman , Dave Hansen , linux-mips@vger.kernel.org, Ralf Baechle , linux-kernel@vger.kernel.org, Paul Burton , Mike Rapoport , Palmer Dabbelt , Vineet Gupta , Martin Schwidefsky , Qian Cai , 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" On Tue, Feb 11, 2020 at 06:33:47AM +0100, Christophe Leroy wrote: > > > Le 11/02/2020 à 03:25, Anshuman Khandual a écrit : > > > > > > On 02/10/2020 04:36 PM, Russell King - ARM Linux admin wrote: > > > There are good reasons for the way ARM does stuff. The generic crap was > > > written without regard for the circumstances that ARM has, and thus is > > > entirely unsuitable for 32-bit ARM. > > > > Since we dont have an agreement here, lets just settle with disabling the > > test for now on platforms where the build fails. CONFIG_EXPERT is enabling > > this test for better adaptability and coverage, hence how about re framing > > the config like this ? This at the least conveys the fact that EXPERT only > > works when platform is neither IA64 or ARM. > > Agreed > > > > > config DEBUG_VM_PGTABLE > > bool "Debug arch page table for semantics compliance" > > depends on MMU > > depends on ARCH_HAS_DEBUG_VM_PGTABLE || (EXPERT && !(IA64 || ARM)) > > I think it's maybe better to have a dedicated depends line: > > depends on !IA64 && !ARM > depends on ARCH_HAS_DEBUG_VM_PGTABLE || EXPERT > > The day arm and/or ia64 is ready for building the test, we can remove that > depends. Never going to happen as its technically infeasible, sorry. -- RMK's Patch system: https://www.armlinux.org.uk/developer/patches/ FTTC broadband for 0.8mile line in suburbia: sync at 12.1Mbps down 622kbps up According to speedtest.net: 11.9Mbps down 500kbps up 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=-2.1 required=3.0 tests=DKIM_INVALID,DKIM_SIGNED, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, URIBL_BLOCKED,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 10E7CC3B186 for ; Tue, 11 Feb 2020 09:25:46 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id BBEF62051A for ; Tue, 11 Feb 2020 09:25:45 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (2048-bit key) header.d=armlinux.org.uk header.i=@armlinux.org.uk header.b="qjHd2cY4" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org BBEF62051A Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=armlinux.org.uk Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=owner-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix) id 551216B02A0; Tue, 11 Feb 2020 04:25:45 -0500 (EST) Received: by kanga.kvack.org (Postfix, from userid 40) id 4DB3E6B02A1; Tue, 11 Feb 2020 04:25:45 -0500 (EST) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 37CEF6B02A2; Tue, 11 Feb 2020 04:25:45 -0500 (EST) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0180.hostedemail.com [216.40.44.180]) by kanga.kvack.org (Postfix) with ESMTP id 1C22A6B02A0 for ; Tue, 11 Feb 2020 04:25:45 -0500 (EST) Received: from smtpin11.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay02.hostedemail.com (Postfix) with ESMTP id DC416A2B3 for ; Tue, 11 Feb 2020 09:25:44 +0000 (UTC) X-FDA: 76477313808.11.chain95_14dc6c773c145 X-HE-Tag: chain95_14dc6c773c145 X-Filterd-Recvd-Size: 6574 Received: from pandora.armlinux.org.uk (pandora.armlinux.org.uk [78.32.30.218]) by imf40.hostedemail.com (Postfix) with ESMTP for ; Tue, 11 Feb 2020 09:25:43 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=armlinux.org.uk; s=pandora-2019; h=Sender:In-Reply-To: Content-Transfer-Encoding:Content-Type:MIME-Version:References:Message-ID: Subject:Cc:To:From:Date:Reply-To:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Id: List-Help:List-Unsubscribe:List-Subscribe:List-Post:List-Owner:List-Archive; bh=t+QeGYCEkcUs6b5ZM+NOCwDbOmiMQnW8+LwY6bloPz4=; b=qjHd2cY4lTS/cb7bo4SP21lEI sUw+WwOCTcr39efAZGJoSf5pc1rkF99mBPElJh5dxtxrVXkd5r8pZ35M3ZfVodX8d45wYDbdrWO0J obey6q5d1eoDdzy+zGQoBw5EdxokxL4V8Mqrm7+DwCQhVJE0SpExjvX1qu/Rr98SN6lpOpUPiz2SK Fo8muWV7WCBNkIipNrx1cXJrdbQhgjhUVCjm9k1TQTH0PBfFMstbJP/LB7eavJb67MdKLpZ/i7Fx+ 7xOdkDULV9Ftpxwe57kIuG/nvVpEp+3i9oni28P56FkXFFyOxHOLqnr33ssRmsiyeDJNxiWaPVYmm 0QKe2yYMg==; Received: from shell.armlinux.org.uk ([2001:4d48:ad52:3201:5054:ff:fe00:4ec]:38850) by pandora.armlinux.org.uk with esmtpsa (TLSv1.2:ECDHE-RSA-AES256-GCM-SHA384:256) (Exim 4.90_1) (envelope-from ) id 1j1Rn0-0003iZ-Ul; Tue, 11 Feb 2020 09:25:07 +0000 Received: from linux by shell.armlinux.org.uk with local (Exim 4.92) (envelope-from ) id 1j1Rmi-0000Jw-RR; Tue, 11 Feb 2020 09:24:48 +0000 Date: Tue, 11 Feb 2020 09:24:48 +0000 From: Russell King - ARM Linux admin To: Christophe Leroy Cc: Anshuman Khandual , Andrew Morton , kbuild test robot , kbuild-all@lists.01.org, linux-mm@kvack.org, Vlastimil Babka , Greg Kroah-Hartman , Thomas Gleixner , Mike Rapoport , Jason Gunthorpe , Dan Williams , Peter Zijlstra , Michal Hocko , Mark Rutland , Mark Brown , Steven Price , Ard Biesheuvel , Masahiro Yamada , Kees Cook , Tetsuo Handa , Matthew Wilcox , Dave Hansen , 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 , Richard Henderson , Ivan Kokshaysky , Matt Turner , Mark Salter , Aurelien Jacquiot , Yoshinori Sato , Brian Cain , Geert Uytterhoeven , Michal Simek , Paul Walmsley , Palmer Dabbelt , Guan Xuetao , Chris Zankel , Max Filippov , Qian Cai , linux-alpha@vger.kernel.org, linux-c6x-dev@linux-c6x.org, uclinux-h8-devel@lists.sourceforge.jp, linux-hexagon@vger.kernel.org, linux-m68k@vger.kernel.org, linux-riscv@lists.infradead.org, linux-xtensa@linux-xtensa.org, 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 V13] mm/debug: Add tests validating architecture page table helpers Message-ID: <20200211092448.GI25745@shell.armlinux.org.uk> References: <202002060619.wEOdAZU1%lkp@intel.com> <78d3ce6b-e100-2561-6b09-124c29731d1a@arm.com> <20200209205231.44d098f8749e88190b8ba10c@linux-foundation.org> <955229f7-f161-f720-0e75-a3163f63817d@arm.com> <20200210100200.GB25745@shell.armlinux.org.uk> <7cb3a5bb-eaea-a01c-4047-e3c000b7ad1d@c-s.fr> <20200210110639.GC25745@shell.armlinux.org.uk> <82317d50-57a2-ce84-7557-21635d57448e@arm.com> MIME-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.10.1 (2018-07-13) Content-Transfer-Encoding: quoted-printable X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: On Tue, Feb 11, 2020 at 06:33:47AM +0100, Christophe Leroy wrote: >=20 >=20 > Le 11/02/2020 =E0 03:25, Anshuman Khandual a =E9crit=A0: > >=20 > >=20 > > On 02/10/2020 04:36 PM, Russell King - ARM Linux admin wrote: > > > There are good reasons for the way ARM does stuff. The generic cra= p was > > > written without regard for the circumstances that ARM has, and thus= is > > > entirely unsuitable for 32-bit ARM. > >=20 > > Since we dont have an agreement here, lets just settle with disabling= the > > test for now on platforms where the build fails. CONFIG_EXPERT is ena= bling > > this test for better adaptability and coverage, hence how about re fr= aming > > the config like this ? This at the least conveys the fact that EXPERT= only > > works when platform is neither IA64 or ARM. >=20 > Agreed >=20 > >=20 > > config DEBUG_VM_PGTABLE > > bool "Debug arch page table for semantics compliance" > > depends on MMU > > depends on ARCH_HAS_DEBUG_VM_PGTABLE || (EXPERT && !(IA64 || ARM)) >=20 > I think it's maybe better to have a dedicated depends line: >=20 > depends on !IA64 && !ARM > depends on ARCH_HAS_DEBUG_VM_PGTABLE || EXPERT >=20 > The day arm and/or ia64 is ready for building the test, we can remove t= hat > depends. Never going to happen as its technically infeasible, sorry. --=20 RMK's Patch system: https://www.armlinux.org.uk/developer/patches/ FTTC broadband for 0.8mile line in suburbia: sync at 12.1Mbps down 622kbp= s up According to speedtest.net: 11.9Mbps down 500kbps up