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=-9.1 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham 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 3D4BFC169C4 for ; Tue, 29 Jan 2019 10:49:57 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 09FFC2148E for ; Tue, 29 Jan 2019 10:49:57 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=synopsys.com header.i=@synopsys.com header.b="T/EA5xPX" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728457AbfA2Ktz (ORCPT ); Tue, 29 Jan 2019 05:49:55 -0500 Received: from us01smtprelay-2.synopsys.com ([198.182.60.111]:46396 "EHLO smtprelay.synopsys.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728351AbfA2Ktx (ORCPT ); Tue, 29 Jan 2019 05:49:53 -0500 Received: from mailhost.synopsys.com (dc2-mailhost1.synopsys.com [10.12.135.161]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtprelay.synopsys.com (Postfix) with ESMTPS id 579BC10C1493; Tue, 29 Jan 2019 02:49:53 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=synopsys.com; s=mail; t=1548758993; bh=w64iJvGv0yzHjpm3aGnApbOj/XSVxiTqqDo3AeNSwII=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=T/EA5xPXWwaU+ME9vhv1a5ub61AO5Ik+T1iC3ke3MCaK/81QfJloBzPP6pXr54thz k3WE5BZN8hbndPGLVXnqrT9hsdr9u7kgIW8QwjOb71v9GpCnCqaUJC4gHXcrz4Myp1 rwb09mp/p9JZry+7zocFAukVRLfD+15Datqe36cvSqCGbZi9TzSvSgETcUh8jhpBts Z1j8ZVTBwBSWTvcFuMMJyF9DYTfq7xV+32q1LHa41/0080mU9q0ZMmOhlrvXis4vWY 7gV/APWo/Si3cgC/M6B6fUQaUhjua8TSnPlk+RuTNoCVqEv5wrzGmvFOHVof0kkogO K49mJoK1nycTA== Received: from paltsev-e7480.internal.synopsys.com (unknown [10.121.8.46]) by mailhost.synopsys.com (Postfix) with ESMTP id EE25EA0070; Tue, 29 Jan 2019 10:49:51 +0000 (UTC) From: Eugeniy Paltsev To: linux-snps-arc@lists.infradead.org, Vineet Gupta Cc: linux-kernel@vger.kernel.org, Alexey Brodkin , Eugeniy Paltsev Subject: [PATCH 4/5] ARCv2: use unaligned access in SW Date: Tue, 29 Jan 2019 13:49:41 +0300 Message-Id: <20190129104942.31705-5-Eugeniy.Paltsev@synopsys.com> X-Mailer: git-send-email 2.14.5 In-Reply-To: <20190129104942.31705-1-Eugeniy.Paltsev@synopsys.com> References: <20190129104942.31705-1-Eugeniy.Paltsev@synopsys.com> Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Select HAVE_EFFICIENT_UNALIGNED_ACCESS and allow GCC to generate unaligned data if we enable enable unaligned access in HW. Signed-off-by: Eugeniy Paltsev --- arch/arc/Kconfig | 1 + arch/arc/Makefile | 6 ++++++ 2 files changed, 7 insertions(+) diff --git a/arch/arc/Kconfig b/arch/arc/Kconfig index 37c8aeefa3a5..a1d976c612a6 100644 --- a/arch/arc/Kconfig +++ b/arch/arc/Kconfig @@ -390,6 +390,7 @@ if ISA_ARCV2 config ARC_USE_UNALIGNED_MEM_ACCESS bool "Handle unaligned access in HW and use it" default y + select HAVE_EFFICIENT_UNALIGNED_ACCESS help The ARC HS architecture supports unaligned memory access which is disabled by default. Enable unaligned access in diff --git a/arch/arc/Makefile b/arch/arc/Makefile index df00578c279d..e2b991f75bc5 100644 --- a/arch/arc/Makefile +++ b/arch/arc/Makefile @@ -28,6 +28,12 @@ cflags-$(CONFIG_ARC_HAS_SWAPE) += -mswape ifdef CONFIG_ISA_ARCV2 +ifdef CONFIG_ARC_USE_UNALIGNED_MEM_ACCESS +cflags-y += -munaligned-access +else +cflags-y += -mno-unaligned-access +endif + ifndef CONFIG_ARC_HAS_LL64 cflags-y += -mno-ll64 endif -- 2.14.5