From patchwork Sat May 15 10:17:57 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Arnd Bergmann X-Patchwork-Id: 12259585 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=-12.7 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE, SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT 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 45B3BC433ED for ; Sat, 15 May 2021 10:19:29 +0000 (UTC) Received: from desiato.infradead.org (desiato.infradead.org [90.155.92.199]) (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 A0FF2613F5 for ; Sat, 15 May 2021 10:19:28 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org A0FF2613F5 Authentication-Results: mail.kernel.org; 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Received: from mail.kernel.org ([198.145.29.99]) by bombadil.infradead.org with esmtps (Exim 4.94 #2 (Red Hat Linux)) id 1lhrNt-00CU3z-9h; Sat, 15 May 2021 10:19:03 +0000 Received: by mail.kernel.org (Postfix) with ESMTPSA id 2FED6613ED; Sat, 15 May 2021 10:18:56 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1621073940; bh=IpDqq3tGZovUUgcolTosWSkNN0zOGEGLOzuZ4zntl2M=; h=From:To:Cc:Subject:Date:From; b=mPn1OjVomxs7Tu/J0zC+FtbvaOsr6yQtXpoEj9sOi4LdXTcbto5qJ96l5zGrlpywO S9h/yllV/A7xG4K2EqluCEN+iU8aMWSWgvByBTJiljpi+sS3kiNXEDaRAWkE1e7SKM sxKRPsWhTYLl3eTQWbxjjYc5gYDjylTk+ySJih9CK9j6ccvN98Y6VtRlIgLO5VL8+8 1QeSFO1LDLs8iguwhOAyXJFeodhvDZp8PXLkMitx7yPyKl0bGUmVhJjLazb7iS4leT cYyRbNnN88rAws6za+S3f2nl8YyuPZ0+1JIwQRAsVrcvD6dvU/aeGd/unrmM2Ofwwi 8sCIbzxalbdtQ== From: Arnd Bergmann To: linux-arch@vger.kernel.org Cc: Arnd Bergmann , Christoph Hellwig , Al Viro , Vineet Gupta , Yoshinori Sato , Brian Cain , Geert Uytterhoeven , Paul Walmsley , Palmer Dabbelt , Albert Ou , Jeff Dike , Richard Weinberger , Anton Ivanov , Sid Manning , Andrew Morton , Mike Rapoport , linux-snps-arc@lists.infradead.org, linux-kernel@vger.kernel.org, uclinux-h8-devel@lists.sourceforge.jp, linux-hexagon@vger.kernel.org, linux-m68k@lists.linux-m68k.org, linux-riscv@lists.infradead.org, linux-um@lists.infradead.org Subject: [PATCH 0/6] [v2] asm-generic: strncpy_from_user/strnlen_user cleanup Date: Sat, 15 May 2021 12:17:57 +0200 Message-Id: <20210515101803.924427-1-arnd@kernel.org> X-Mailer: git-send-email 2.29.2 MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20210515_031901_437032_3D6B224D X-CRM114-Status: GOOD ( 14.79 ) X-BeenThere: linux-riscv@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-riscv" Errors-To: linux-riscv-bounces+linux-riscv=archiver.kernel.org@lists.infradead.org From: Arnd Bergmann As I've queued up some patches for asm-generic, I remembered an older series that I created but never submitted. These two functions appear to be unnecessarily different between architectures, and the asm-generic version is a bit questionable, even for NOMMU architectures. Clean this up to just use the generic library version for anything that uses the generic version today. I've expanded on the patch descriptions a little, as suggested by Christoph Hellwig, but I suspect a more detailed review would uncover additional problems with the custom versions that are getting removed. Arnd Arnd Bergmann (6): [v2] asm-generic/uaccess.h: remove __strncpy_from_user/__strnlen_user [v2] h8300: remove stale strncpy_from_user [v2] hexagon: use generic strncpy/strnlen from_user [v2] arc: use generic strncpy/strnlen from_user [v2] asm-generic: uaccess: remove inline strncpy_from_user/strnlen_user [v2] asm-generic: remove extra strn{cpy_from,len}_user declarations arch/arc/Kconfig | 2 + arch/arc/include/asm/uaccess.h | 72 ---------------- arch/arc/mm/extable.c | 12 --- arch/h8300/Kconfig | 2 + arch/h8300/kernel/h8300_ksyms.c | 2 - arch/h8300/lib/Makefile | 2 +- arch/h8300/lib/strncpy.S | 35 -------- arch/hexagon/Kconfig | 2 + arch/hexagon/include/asm/uaccess.h | 31 ------- arch/hexagon/kernel/hexagon_ksyms.c | 1 - arch/hexagon/mm/Makefile | 2 +- arch/hexagon/mm/strnlen_user.S | 126 ---------------------------- arch/m68k/Kconfig | 4 +- arch/riscv/Kconfig | 4 +- arch/um/include/asm/uaccess.h | 5 +- arch/um/kernel/skas/uaccess.c | 5 +- include/asm-generic/uaccess.h | 52 ++---------- 17 files changed, 25 insertions(+), 334 deletions(-) delete mode 100644 arch/h8300/lib/strncpy.S delete mode 100644 arch/hexagon/mm/strnlen_user.S