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=-6.7 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI, NICE_REPLY_A,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_SANE_1 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 78803C432BE for ; Wed, 1 Sep 2021 08:58:02 +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 489C160C3E for ; Wed, 1 Sep 2021 08:58:02 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.1 mail.kernel.org 489C160C3E 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-Type: Content-Transfer-Encoding:List-Subscribe:List-Help:List-Post:List-Archive: List-Unsubscribe:List-Id:In-Reply-To:MIME-Version:Date:Message-ID:From: References:CC:To:Subject:Reply-To:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=t9/Xt7QDHSabTirbWkW7Iw0wPRhxv1D2zLMg8XuYg/0=; b=iAbRNUl0gG56wthffDZnuDVRA+ jVkUDQpI1Mevb9mn2JUjAwwySGeX9nNqRGTOJpBZgA2Xr67W+472Xd6BLwKdB0/eGT1+zI5W0lUxC v8KHRlESDF+m7OF+fcZc4Nx1xu/YIPuszZ+9oQMVfgHm4W2WB1vVi/Km2wRUsNxLbQNsogeLehP2u HTSq45/d3Zh1PwN/mOORJAphJSQJnqGeiOvW0q4LKr/ludMfg3Oo5q026tXf3xGh+8332q01VWtBQ JO1Xydy9XOTsvHeCfkSelH/tw+7SaNeKxsxUqHasCJEEciWQRpL7n4XUgrgMH3S4aRSR+lz9JbgPR +1eqF03w==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1mLM1c-004gZX-04; Wed, 01 Sep 2021 08:55:16 +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 1mLLOw-004WfW-0n for linux-arm-kernel@lists.infradead.org; Wed, 01 Sep 2021 08:15:22 +0000 Received: from dggemv711-chm.china.huawei.com (unknown [172.30.72.56]) by szxga02-in.huawei.com (SkyGuard) with ESMTP id 4GzxbB0PPNzbgJT; Wed, 1 Sep 2021 16:11:18 +0800 (CST) Received: from dggpemm500002.china.huawei.com (7.185.36.229) by dggemv711-chm.china.huawei.com (10.1.198.66) 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 16:15:12 +0800 Received: from [10.174.178.247] (10.174.178.247) by dggpemm500002.china.huawei.com (7.185.36.229) 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 16:15:12 +0800 Subject: Re: [PATCH] ACPI / PPTT: get PPTT table in the first beginning To: Zenghui Yu , Sudeep Holla CC: Xiongfeng Wang , , , , , , , References: <20210720112635.38565-1-wangxiongfeng2@huawei.com> <20210720133751.u6k6bdm7qco3gn65@bogus> From: Hanjun Guo Message-ID: <30c0b347-54fa-4113-d533-74b101b90f46@huawei.com> Date: Wed, 1 Sep 2021 16:15:11 +0800 User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:68.0) Gecko/20100101 Thunderbird/68.6.0 MIME-Version: 1.0 In-Reply-To: Content-Language: en-GB X-Originating-IP: [10.174.178.247] X-ClientProxiedBy: dggems705-chm.china.huawei.com (10.3.19.182) To dggpemm500002.china.huawei.com (7.185.36.229) X-CFilter-Loop: Reflected X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20210901_011518_317630_419ED0FF X-CRM114-Status: GOOD ( 12.24 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Transfer-Encoding: 7bit Content-Type: text/plain; charset="us-ascii"; Format="flowed" Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org On 2021/9/1 15:29, Zenghui Yu wrote: > On 2021/7/20 21:37, Sudeep Holla wrote: >> On Tue, Jul 20, 2021 at 07:26:35PM +0800, Xiongfeng Wang wrote: >>> When I added might_sleep() in down_timeout(), I got the following >> >> Sorry it is not clear if you are able to reproduce this issue without >> any other modifications in the mainline kernel ? > > Jump in this thread as the exact splat is triggered at boot time > in the latest mainline kernel thanks to commit 99409b935c9a > ("locking/semaphore: Add might_sleep() to down_*() family"). Please see the patch provided by Thomas Gleixner, it should fix this issue in a better way: https://lkml.org/lkml/2021/8/31/352 Thanks Hanjun _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel