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=1.3 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,FSL_HELO_FAKE,MAILING_LIST_MULTI,SPF_PASS, USER_AGENT_MUTT 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 0BF71C282D7 for ; Wed, 30 Jan 2019 21:09:00 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id B3B3720881 for ; Wed, 30 Jan 2019 21:08:59 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1548882539; bh=GJh6n9GmMPfbc0fnlKIm7XjEdr7VIklIawdWGsUcozI=; h=Date:From:To:Cc:Subject:References:In-Reply-To:List-ID:From; b=dd3i0HUNNtfbM//QqHLVdlgiaLIp35TlEso06S7ydNtHW6+asbwJByU4/gPqNMhiM sAxPMvehndwpLOwtkPZMNHbuTCKBrBm0yjy3fzcCAWWKi/SOGmfY61AsSCrBgzIqLH tNTHNbkizrGwX8qfZI7po23c0KkTBKLZjOwq8/7M= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1732622AbfA3VI7 (ORCPT ); Wed, 30 Jan 2019 16:08:59 -0500 Received: from mail.kernel.org ([198.145.29.99]:39830 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727097AbfA3VI7 (ORCPT ); Wed, 30 Jan 2019 16:08:59 -0500 Received: from gmail.com (unknown [104.132.1.77]) (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 5D14D2184D; Wed, 30 Jan 2019 21:08:57 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1548882537; bh=GJh6n9GmMPfbc0fnlKIm7XjEdr7VIklIawdWGsUcozI=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=rhJC3+pjbphXiZXO9SmDjiFBnJ1OMV59HKL21WW2hMx5a/owfqh8uJ45QDhKFprge TK1O0j7z4x+zb+Jk7T8NCiThpH9JEBXu25VvH4DGUXHlibbC/oJ64iyyWplShDtIBm +9m16Elvy2BQUtUtUHL1JE/4V1sRuLUHguapijfQ= Date: Wed, 30 Jan 2019 13:08:55 -0800 From: Eric Biggers To: Ard Biesheuvel Cc: "open list:HARDWARE RANDOM NUMBER GENERATOR CORE" , Herbert Xu , Tim Chen , linux-arm-kernel Subject: Re: [PATCH v3 2/3] crypto: arm/crct10dif-ce - cleanup and optimizations Message-ID: <20190130210855.GB231835@gmail.com> References: <20190130031444.28935-1-ebiggers@kernel.org> <20190130031444.28935-3-ebiggers@kernel.org> <20190130205553.GA231835@gmail.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.10.1 (2018-07-13) Sender: linux-crypto-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-crypto@vger.kernel.org On Wed, Jan 30, 2019 at 10:00:53PM +0100, Ard Biesheuvel wrote: > On Wed, 30 Jan 2019 at 21:55, Eric Biggers wrote: > > > > On Tue, Jan 29, 2019 at 07:14:43PM -0800, Eric Biggers wrote: > > > + .macro __adrl, out, sym > > > + movw \out, #:lower16:\sym > > > + movt \out, #:upper16:\sym > > > + .endm > > > > Hi Ard, it seems we need the __LINUX_ARM_ARCH__ < 7 case after all? > > The kbuild test robot reported a build error, which can be reproduced with: > > > > ( cat arch/arm/configs/multi_v7_defconfig; > > echo CONFIG_ARCH_MULTI_V6=y; > > echo CONFIG_CRC_T10DIF=y; > > echo CONFIG_CRYPTO_CRCT10DIF_ARM_CE=y ) > .config > > make olddefconfig > > make arch/arm/crypto/crct10dif-ce-core.o > > > > > > AS arch/arm/crypto/crct10dif-ce-core.o > > arch/arm/crypto/crct10dif-ce-core.S: Assembler messages: > > arch/arm/crypto/crct10dif-ce-core.S:165: Error: .err encountered > > arch/arm/crypto/crct10dif-ce-core.S:165: Error: selected processor does not support `movw fold_consts_ptr,#:lower16:.Lfold_across_128_bytes_consts' in ARM mode > > arch/arm/crypto/crct10dif-ce-core.S:165: Error: selected processor does not support `movt fold_consts_ptr,#:upper16:.Lfold_across_128_bytes_consts' in ARM mode > > arch/arm/crypto/crct10dif-ce-core.S:267: Error: .err encountered > > arch/arm/crypto/crct10dif-ce-core.S:267: Error: selected processor does not support `movw r3,#:lower16:.Lbyteshift_table+16' in ARM mode > > arch/arm/crypto/crct10dif-ce-core.S:267: Error: selected processor does not support `movt r3,#:upper16:.Lbyteshift_table+16' in ARM mode > > arch/arm/crypto/crct10dif-ce-core.S:329: Error: .err encountered > > arch/arm/crypto/crct10dif-ce-core.S:329: Error: selected processor does not support `movw fold_consts_ptr,#:lower16:.Lfold_across_16_bytes_consts' in ARM mode > > arch/arm/crypto/crct10dif-ce-core.S:329: Error: selected processor does not support `movt fold_consts_ptr,#:upper16:.Lfold_across_16_bytes_consts' in ARM mode > > scripts/Makefile.build:367: recipe for target 'arch/arm/crypto/crct10dif-ce-core.o' failed > > make[1]: *** [arch/arm/crypto/crct10dif-ce-core.o] Error 1 > > Makefile:1709: recipe for target 'arch/arm/crypto/crct10dif-ce-core.o' failed > > make: *** [arch/arm/crypto/crct10dif-ce-core.o] Error 2 > > > > That does not make sense. That code can only execute on a NEON capable > CPU, which is guaranteed to support movw/movt as well. So I'd prefer > solving this by adding '.arch armv7-a' to this .S file. Yes that works. I'll send out a new version with that. - Eric