From patchwork Wed Sep 1 02:46:18 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Tong Tiangen X-Patchwork-Id: 12468149 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=-12.1 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,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 3ACD1C432BE for ; Wed, 1 Sep 2021 02:38:27 +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 B2BBC60F12 for ; Wed, 1 Sep 2021 02:38:26 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.1 mail.kernel.org B2BBC60F12 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: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:In-Reply-To:References: List-Owner; bh=xt9lpyjhvTMvhihh84aBalQ7tc7Xf9K67lmsvovFKSE=; b=WMeefoncLZI5pE 9Hw2x26U8aJ7Fw3uYcVXNLMVUXufaNGKwxYX9INwe/3U1YLpXRy4gMkzOLs+nFKIpTu/8kvNxf8+2 XRRrkMTTLnRq7BYqX5yT6OCDRVehV0nX1b841LwXyWL4pux7gWjNs2DX0WmJr7maBkv/lsyiTjdBF SmJmxIE7a25/dCtwwRWrmCmqt2HGWGZ6QdTlNxOZfJvDgddkDGL0+Ts10Di0h9zJXF/RLCTNTPkZt mMib6VtyWopjDZQmC5VzSAJP3+coy4UpFjGEz0FlD3nZI6qXziQSz3YeW97HgjW04etXqmClFxQ24 f6VzZUohLjatqba/UVqA==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1mLG8U-003bTI-PV; Wed, 01 Sep 2021 02:37:58 +0000 Received: from szxga02-in.huawei.com ([45.249.212.188]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1mLG8P-003bRE-Iv for linux-riscv@lists.infradead.org; Wed, 01 Sep 2021 02:37:57 +0000 Received: from dggemv703-chm.china.huawei.com (unknown [172.30.72.53]) by szxga02-in.huawei.com (SkyGuard) with ESMTP id 4Gzp5k3m7bzbfdy; Wed, 1 Sep 2021 10:33:46 +0800 (CST) Received: from dggpemm000001.china.huawei.com (7.185.36.245) by dggemv703-chm.china.huawei.com (10.3.19.46) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2176.2; Wed, 1 Sep 2021 10:37:41 +0800 Received: from localhost.localdomain (10.175.112.125) by dggpemm000001.china.huawei.com (7.185.36.245) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2308.8; Wed, 1 Sep 2021 10:37:41 +0800 From: Tong Tiangen To: Paul Walmsley , Palmer Dabbelt , Palmer Dabbelt , Albert Ou , CC: , Subject: [PATCH -next v3 0/3] riscv: Fix two vdso issue Date: Wed, 1 Sep 2021 02:46:18 +0000 Message-ID: <20210901024621.2528797-1-tongtiangen@huawei.com> X-Mailer: git-send-email 2.18.0.huawei.25 MIME-Version: 1.0 X-Originating-IP: [10.175.112.125] X-ClientProxiedBy: dggems704-chm.china.huawei.com (10.3.19.181) To dggpemm000001.china.huawei.com (7.185.36.245) X-CFilter-Loop: Reflected X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20210831_193753_832638_D6606CC8 X-CRM114-Status: UNSURE ( 7.18 ) 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 v3->v2: Adapt to the latest code. v2->v1: Add patch "Refactor asm/vdso.h" to avoid vdso.lds syntax error if CONFIG_GENERIC_TIME_VSYSCALL=n. 1) Move vdso data page up front and introduce enum vvar_pages, This makes it easier to introduce new feature TIME_NS. 2) In arch_setup_additional_pages(), make Wait for the lock in the killable mode and return with EINTR if the task got killed while waiting. Tong Tiangen (3): riscv/vdso: Refactor asm/vdso.h riscv/vdso: Move vdso data page up front riscv/vdso: make arch_setup_additional_pages wait for mmap_sem for write killable arch/riscv/include/asm/syscall.h | 1 + arch/riscv/include/asm/vdso.h | 15 ++++----- arch/riscv/kernel/syscall_table.c | 1 - arch/riscv/kernel/vdso.c | 53 +++++++++++++++++++------------ arch/riscv/kernel/vdso/vdso.lds.S | 3 +- 5 files changed, 42 insertions(+), 31 deletions(-) Reviewed-by: Kefeng Wang