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 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 smtp.lore.kernel.org (Postfix) with ESMTPS id BCF87C77B61 for ; Fri, 14 Apr 2023 02:27:55 +0000 (UTC) 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: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=cIxJ3XvkSigwS0zpn4FjgrE7Z0/4unQXTw5Q7pYCZgQ=; b=cGrI2YZgYUwVX07HzQ0pc8IhFH uDU+UPnOelsf34dRxaDymf9PrC3XXome9f55YYuC4aKDk37ksYu2foKiucA7EIexxck9YGJ44ktv0 k3dYbV6/nO2ZPx9xKGPCij5IvsLqBd8MJ6GHew+q2u/FnMfWALaM9/n1c0UA7YzswV8ZvGj2jkLYj a4SNmBYg2BxI586TfOWtrC1ZkEayWVtWEVAqx/jbAyFj7BjG6c78kujFiM3tCAAIw8KDB6VtvFmY2 lMMsc41xMmLHGUNNViT1I7Uf9OY8GhuqRR9veqviBeZOGc4zAtfOufIxz5jFtXxmN6kHb6M1cxudQ 10HOyxqQ==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.96 #2 (Red Hat Linux)) id 1pn9AF-0087BY-39; Fri, 14 Apr 2023 02:27:51 +0000 Received: from szxga02-in.huawei.com ([45.249.212.188]) by bombadil.infradead.org with esmtps (Exim 4.96 #2 (Red Hat Linux)) id 1pn9AD-00878w-0G; Fri, 14 Apr 2023 02:27:50 +0000 Received: from dggpemm500006.china.huawei.com (unknown [172.30.72.54]) by szxga02-in.huawei.com (SkyGuard) with ESMTP id 4PyKzN1lFDzKyTr; Fri, 14 Apr 2023 10:25:04 +0800 (CST) Received: from [10.174.178.55] (10.174.178.55) by dggpemm500006.china.huawei.com (7.185.36.236) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2507.23; Fri, 14 Apr 2023 10:27:40 +0800 Subject: Re: [PATCH v5] arm64: kdump: simplify the reservation behaviour of crashkernel=,high To: Catalin Marinas , Baoquan He CC: , , , , , References: <20230407022419.19412-1-bhe@redhat.com> From: "Leizhen (ThunderTown)" Message-ID: <1ab19701-b72f-34f8-8feb-662a7dc59580@huawei.com> Date: Fri, 14 Apr 2023 10:27:39 +0800 User-Agent: Mozilla/5.0 (Windows NT 10.0; WOW64; rv:60.0) Gecko/20100101 Thunderbird/60.7.0 MIME-Version: 1.0 In-Reply-To: Content-Language: en-US X-Originating-IP: [10.174.178.55] X-ClientProxiedBy: dggems705-chm.china.huawei.com (10.3.19.182) To dggpemm500006.china.huawei.com (7.185.36.236) X-CFilter-Loop: Reflected X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20230413_192749_305722_B6A4FED5 X-CRM114-Status: GOOD ( 10.69 ) X-BeenThere: kexec@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "kexec" Errors-To: kexec-bounces+kexec=archiver.kernel.org@lists.infradead.org On 2023/4/13 22:30, Catalin Marinas wrote: > On Thu, Apr 13, 2023 at 03:45:50PM +0800, Baoquan He wrote: >> I am OK with this version, or the version with min(SZ_4G, >> arm64_dma_phys_limit), or v4. Please help point out if I got your idea >> correctly. Thanks a lot. > > I think we should stick to this patch. The disabling of the ZONE_DMA(32) > is fairly specialised and you are right that we should not introduce an > artificial 4GB crashkernel boundary on such systems. The slight > confusion may be that ,high triggers a search above 4GB where there's > not such boundary but this would match the documentation anyway. > Agreed, so careful. -- Regards, Zhen Lei _______________________________________________ kexec mailing list kexec@lists.infradead.org http://lists.infradead.org/mailman/listinfo/kexec