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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 1j113q-0001Ql-2f; Mon, 10 Feb 2020 04:52:42 +0000 Received: from mail.kernel.org ([198.145.29.99]) by bombadil.infradead.org with esmtps (Exim 4.92.3 #3 (Red Hat Linux)) id 1j113l-0001P7-Cx; Mon, 10 Feb 2020 04:52:39 +0000 Received: from localhost.localdomain (c-73-231-172-41.hsd1.ca.comcast.net [73.231.172.41]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 6A05D208C4; Mon, 10 Feb 2020 04:52:32 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1581310354; bh=2W/dmgTJj6413Xr7wihmGcYdSzIEeuWsZRG1pj9rho0=; h=Date:From:To:Cc:Subject:In-Reply-To:References:From; b=fpI8skXkWSRkM2Z7t+IumpNpNlIyF35fF7t+yGEA67BDAAqSWhx6bv4mO/yn0SyDF TmUxgUc36bRm998D0NbvswNWlliaFKrJH88Mwv6jTUy1ILklfKpB9gT2jSQppuhH+2 hH7M1ataalYtvJe9O809m6u56bYNF8WwzVrYPDcM= Date: Sun, 9 Feb 2020 20:52:31 -0800 From: Andrew Morton To: Anshuman Khandual Subject: Re: [PATCH V13] mm/debug: Add tests validating architecture page table helpers Message-Id: <20200209205231.44d098f8749e88190b8ba10c@linux-foundation.org> In-Reply-To: <78d3ce6b-e100-2561-6b09-124c29731d1a@arm.com> References: <1580897674-16456-1-git-send-email-anshuman.khandual@arm.com> <202002060619.wEOdAZU1%lkp@intel.com> <78d3ce6b-e100-2561-6b09-124c29731d1a@arm.com> X-Mailer: Sylpheed 3.5.1 (GTK+ 2.24.31; x86_64-pc-linux-gnu) Mime-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200209_205237_487811_A03E45FA X-CRM114-Status: GOOD ( 21.27 ) 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, Dave Hansen , Paul Mackerras , sparclinux@vger.kernel.org, linux-hexagon@vger.kernel.org, linux-riscv@lists.infradead.org, Dan Williams , linux-s390@vger.kernel.org, kbuild test robot , Yoshinori Sato , Max Filippov , Michael Ellerman , x86@kernel.org, Russell King - ARM Linux , Matthew Wilcox , Steven Price , Jason Gunthorpe , Geert Uytterhoeven , Gerald Schaefer , Mark Salter , Matt Turner , linux-snps-arc@lists.infradead.org, linux-arm-kernel@lists.infradead.org, Ingo Molnar , linux-xtensa@linux-xtensa.org, Kees Cook , Masahiro Yamada , linux-alpha@vger.kernel.org, Aurelien Jacquiot , linux-c6x-dev@linux-c6x.org, Mark Brown , Ivan Kokshaysky , Paul Walmsley , "Kirill A . Shutemov" , Thomas Gleixner , Guan Xuetao , Vlastimil Babka , Richard Henderson , Christophe Leroy , Chris Zankel , Michal Simek , kbuild-all@lists.01.org, Brian Cain , Ard Biesheuvel , Greg Kroah-Hartman , linux-mips@vger.kernel.org, Ralf Baechle , linux-kernel@vger.kernel.org, Paul Burton , Mike Rapoport , Palmer Dabbelt , Vineet Gupta , Martin Schwidefsky , Qian Cai , linuxppc-dev@lists.ozlabs.org, "David S. Miller" Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-snps-arc" Errors-To: linux-snps-arc-bounces+linux-snps-arc=archiver.kernel.org@lists.infradead.org On Thu, 6 Feb 2020 13:49:35 +0530 Anshuman Khandual wrote: > > On 02/06/2020 04:40 AM, kbuild test robot wrote: > > Hi Anshuman, > > > > Thank you for the patch! Yet something to improve: > > > > [auto build test ERROR on powerpc/next] > > [also build test ERROR on s390/features linus/master arc/for-next v5.5] > > [cannot apply to mmotm/master tip/x86/core arm64/for-next/core next-20200205] > > [if your patch is applied to the wrong git tree, please drop us a note to help > > improve the system. BTW, we also suggest to use '--base' option to specify the > > base tree in git format-patch, please see https://stackoverflow.com/a/37406982] > > > > url: https://github.com/0day-ci/linux/commits/Anshuman-Khandual/mm-debug-Add-tests-validating-architecture-page-table-helpers/20200205-215507 > > base: https://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux.git next > > config: ia64-allmodconfig (attached as .config) > > compiler: ia64-linux-gcc (GCC) 7.5.0 > > reproduce: > > wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross > > chmod +x ~/bin/make.cross > > # save the attached .config to linux build tree > > GCC_VERSION=7.5.0 make.cross ARCH=ia64 > > > > If you fix the issue, kindly add following tag > > Reported-by: kbuild test robot > > > > All error/warnings (new ones prefixed by >>): > > > > In file included from include/asm-generic/pgtable-nopud.h:8:0, > > from arch/ia64/include/asm/pgtable.h:586, > > from include/linux/mm.h:99, > > from include/linux/highmem.h:8, > > from mm/debug_vm_pgtable.c:14: > > mm/debug_vm_pgtable.c: In function 'pud_clear_tests': > >>> include/asm-generic/pgtable-nop4d-hack.h:47:32: error: implicit declaration of function '__pgd'; did you mean '__p4d'? [-Werror=implicit-function-declaration] > > #define __pud(x) ((pud_t) { __pgd(x) }) > > ^ > >>> mm/debug_vm_pgtable.c:141:8: note: in expansion of macro '__pud' > > pud = __pud(pud_val(pud) | RANDOM_ORVALUE); > > ^~~~~ > >>> include/asm-generic/pgtable-nop4d-hack.h:47:22: warning: missing braces around initializer [-Wmissing-braces] > > #define __pud(x) ((pud_t) { __pgd(x) }) > > ^ > >>> mm/debug_vm_pgtable.c:141:8: note: in expansion of macro '__pud' > > pud = __pud(pud_val(pud) | RANDOM_ORVALUE); > > ^~~~~ > > cc1: some warnings being treated as errors > > This build failure is expected now given that we have allowed DEBUG_VM_PGTABLE > with EXPERT without platform requiring ARCH_HAS_DEBUG_VM_PGTABLE. This problem > i.e build failure caused without a platform __pgd(), is known to exist both on > ia64 and arm (32bit) platforms. Please refer https://lkml.org/lkml/2019/9/24/314 > for details where this was discussed earlier. > I'd prefer not to merge a patch which is known to cause build regressions. Is there some temporary thing we can do to prevent these errors until arch maintainers(?) get around to implementing the long-term fixes? _______________________________________________ linux-snps-arc mailing list linux-snps-arc@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-snps-arc