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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id B8AB8C4332F for ; Tue, 15 Nov 2022 13:41:00 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S238452AbiKONk7 (ORCPT ); Tue, 15 Nov 2022 08:40:59 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:42710 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S238442AbiKONk4 (ORCPT ); Tue, 15 Nov 2022 08:40:56 -0500 Received: from szxga02-in.huawei.com (szxga02-in.huawei.com [45.249.212.188]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id B439F186D4; Tue, 15 Nov 2022 05:40:53 -0800 (PST) Received: from dggpemm500023.china.huawei.com (unknown [172.30.72.55]) by szxga02-in.huawei.com (SkyGuard) with ESMTP id 4NBS406tV1zRpHQ; Tue, 15 Nov 2022 21:40:32 +0800 (CST) Received: from dggpemm500006.china.huawei.com (7.185.36.236) by dggpemm500023.china.huawei.com (7.185.36.83) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2375.31; Tue, 15 Nov 2022 21:40:51 +0800 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 15.1.2375.31; Tue, 15 Nov 2022 21:40:50 +0800 Subject: Re: [PATCH v3 0/2] arm64: kdump: Function supplement and performance optimization To: Catalin Marinas CC: Will Deacon , Dave Young , Baoquan He , Vivek Goyal , , , , Jonathan Corbet , , "Eric W . Biederman" , Randy Dunlap , Feng Zhou , Kefeng Wang , Chen Zhou , John Donnelly , "Dave Kleikamp" References: <20220711090319.1604-1-thunder.leizhen@huawei.com> <20221115115837.GE32523@willie-the-truck> <6c1751be-9957-0765-5e68-2eb78adc9a94@huawei.com> From: "Leizhen (ThunderTown)" Message-ID: <39839221-8567-39ad-dade-8d1500df2e8b@huawei.com> Date: Tue, 15 Nov 2022 21:40:49 +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-Type: text/plain; charset="utf-8" Content-Language: en-US Content-Transfer-Encoding: 7bit X-Originating-IP: [10.174.178.55] X-ClientProxiedBy: dggems706-chm.china.huawei.com (10.3.19.183) To dggpemm500006.china.huawei.com (7.185.36.236) X-CFilter-Loop: Reflected Precedence: bulk List-ID: X-Mailing-List: linux-doc@vger.kernel.org On 2022/11/15 21:30, Catalin Marinas wrote: > On Tue, Nov 15, 2022 at 08:18:21PM +0800, Leizhen (ThunderTown) wrote: >> On 2022/11/15 19:58, Will Deacon wrote: >>> On Mon, Jul 11, 2022 at 05:03:17PM +0800, Zhen Lei wrote: >>>> v2 --> v3: >>>> 1. Discard patch 3 in v2, a cleanup patch. >>> >>> Do you plan to respin this series, addressing the various comments on v3? >> >> Yes, I haven't figured out where to make DEFAULT_CRASH_KERNEL_LOW_SIZE generic. > > Do we need to? I'd just go with something like 128MB, specific to arm64, > and we can increase it later if anyone comes up with a good argument. Okay, then v3's easy. I'll do it tomorrow. I've tried it before. 128M is enough. > -- Regards, Zhen Lei