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=-9.8 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS, 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 CA13AC54E8B for ; Mon, 11 May 2020 02:17:15 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id B093B2082E for ; Mon, 11 May 2020 02:17:15 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729457AbgEKCRO (ORCPT ); Sun, 10 May 2020 22:17:14 -0400 Received: from szxga07-in.huawei.com ([45.249.212.35]:49796 "EHLO huawei.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1729272AbgEKCRN (ORCPT ); Sun, 10 May 2020 22:17:13 -0400 Received: from DGGEMS405-HUB.china.huawei.com (unknown [172.30.72.60]) by Forcepoint Email with ESMTP id ED6323CDCC8305343239; Mon, 11 May 2020 10:17:08 +0800 (CST) Received: from localhost.localdomain.localdomain (10.175.113.25) by DGGEMS405-HUB.china.huawei.com (10.3.19.205) with Microsoft SMTP Server id 14.3.487.0; Mon, 11 May 2020 10:17:03 +0800 From: Kefeng Wang To: Paul Walmsley , Palmer Dabbelt , Albert Ou , , CC: Kefeng Wang , Hulk Robot Subject: [PATCH 03/10] riscv: Add pgprot_writecombine/device and PAGE_SHARED defination if NOMMU Date: Mon, 11 May 2020 10:19:54 +0800 Message-ID: <20200511022001.179767-4-wangkefeng.wang@huawei.com> X-Mailer: git-send-email 2.26.2 In-Reply-To: <20200511022001.179767-1-wangkefeng.wang@huawei.com> References: <20200511022001.179767-1-wangkefeng.wang@huawei.com> MIME-Version: 1.0 Content-Transfer-Encoding: 7BIT Content-Type: text/plain; charset=US-ASCII X-Originating-IP: [10.175.113.25] X-CFilter-Loop: Reflected Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Some drivers use PAGE_SHARED, pgprot_writecombine()/pgprot_device(), add the defination to fix build error if NOMMU. Reported-by: Hulk Robot Signed-off-by: Kefeng Wang --- arch/riscv/include/asm/mmio.h | 2 ++ arch/riscv/include/asm/pgtable.h | 1 + 2 files changed, 3 insertions(+) diff --git a/arch/riscv/include/asm/mmio.h b/arch/riscv/include/asm/mmio.h index a2c809df2733..56053c9838b2 100644 --- a/arch/riscv/include/asm/mmio.h +++ b/arch/riscv/include/asm/mmio.h @@ -16,6 +16,8 @@ #ifndef CONFIG_MMU #define pgprot_noncached(x) (x) +#define pgprot_writecombine(x) (x) +#define pgprot_device(x) (x) #endif /* CONFIG_MMU */ /* Generic IO read/write. These perform native-endian accesses. */ diff --git a/arch/riscv/include/asm/pgtable.h b/arch/riscv/include/asm/pgtable.h index 780dd1d4f720..a12d343e080a 100644 --- a/arch/riscv/include/asm/pgtable.h +++ b/arch/riscv/include/asm/pgtable.h @@ -470,6 +470,7 @@ static inline int ptep_clear_flush_young(struct vm_area_struct *vma, #else /* CONFIG_MMU */ +#define PAGE_SHARED __pgprot(0) #define PAGE_KERNEL __pgprot(0) #define swapper_pg_dir NULL #define TASK_SIZE 0xffffffffUL -- 2.26.2