From patchwork Mon Sep 13 12:19:55 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Chen Huang X-Patchwork-Id: 12488655 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=-17.1 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER, INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,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 93FF3C433F5 for ; Mon, 13 Sep 2021 12:11:50 +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 6286A60FBF for ; Mon, 13 Sep 2021 12:11:50 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.1 mail.kernel.org 6286A60FBF Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=huawei.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-ID:Date:Subject:CC:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=av1FYDZoTPA9SELde/9k+m6Eu38IC0ZlnUxsZgGkAk4=; b=uAfvuZB22iEhSI 5+rJYBmsftY2zo8X5gZq4EMAkv8y1bY5TJ30V5JVtA3E6JCTtH4ZH+sB4ppYfZVwQ8QtUDVj87q5F PpUuZ32kQI1mj84Ut6vOP5zr2Wz86gnqn/Jgj5qiiqrhMNVG4ydnAUJJ10/Du1Ta4b03nc3FamSec tn0GsJGqQM7PpcmYLxqn9g7rnablRGGjindpaJx9fDBwIZVTRNp28S7dcEwgBnj84h7cd1eFaYFQo Gs6k7FliAXWrBU3N9WNWV7O6noskdqu+GoDI3uoDlW7OPVJERnKuG1kKMHskfhKaJ3WIO4Vrtjaso tBs4sV5cOfSQOyQLfTGA==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1mPko3-001XwT-87; Mon, 13 Sep 2021 12:11:27 +0000 Received: from szxga01-in.huawei.com ([45.249.212.187]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1mPknz-001Xtj-8w for linux-riscv@lists.infradead.org; Mon, 13 Sep 2021 12:11:25 +0000 Received: from dggemv703-chm.china.huawei.com (unknown [172.30.72.55]) by szxga01-in.huawei.com (SkyGuard) with ESMTP id 4H7QFt4YzZzbmTc; Mon, 13 Sep 2021 20:07:14 +0800 (CST) Received: from dggema756-chm.china.huawei.com (10.1.198.198) by dggemv703-chm.china.huawei.com (10.3.19.46) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256) id 15.1.2308.8; Mon, 13 Sep 2021 20:11:19 +0800 Received: from localhost.localdomain (10.175.112.125) by dggema756-chm.china.huawei.com (10.1.198.198) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id 15.1.2308.8; Mon, 13 Sep 2021 20:11:18 +0800 From: Chen Huang To: Paul Walmsley , Palmer Dabbelt , Albert Ou CC: Chen Huang , Kefeng Wang , , Subject: [PATCH 1/2] riscv: support HAVE_EFFICIENT_UNALIGNED_ACCESS Date: Mon, 13 Sep 2021 12:19:55 +0000 Message-ID: <20210913121956.1776656-2-chenhuang5@huawei.com> X-Mailer: git-send-email 2.18.0.huawei.25 In-Reply-To: <20210913121956.1776656-1-chenhuang5@huawei.com> References: <20210913121956.1776656-1-chenhuang5@huawei.com> MIME-Version: 1.0 X-Originating-IP: [10.175.112.125] X-ClientProxiedBy: dggems705-chm.china.huawei.com (10.3.19.182) To dggema756-chm.china.huawei.com (10.1.198.198) X-CFilter-Loop: Reflected X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20210913_051123_516312_CC8A19A2 X-CRM114-Status: UNSURE ( 8.19 ) X-CRM114-Notice: Please train this message. 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 The RISCV ISA can perform efficient unaligned memory accesses in hardware. This patch selects HAVE_EFFICIENT_UNALIGNED_ACCESS for that. Signed-off-by: Chen Huang Signed-off-by: Kefeng Wang --- arch/riscv/Kconfig | 1 + 1 file changed, 1 insertion(+) diff --git a/arch/riscv/Kconfig b/arch/riscv/Kconfig index aac669a6c3d8..6e70bf50b02a 100644 --- a/arch/riscv/Kconfig +++ b/arch/riscv/Kconfig @@ -81,6 +81,7 @@ config RISCV select HAVE_DEBUG_KMEMLEAK select HAVE_DMA_CONTIGUOUS if MMU select HAVE_EBPF_JIT if MMU + select HAVE_EFFICIENT_UNALIGNED_ACCESS select HAVE_FUNCTION_ERROR_INJECTION select HAVE_FUTEX_CMPXCHG if FUTEX select HAVE_GCC_PLUGINS