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=-2.3 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,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 DC85CC433DF for ; Wed, 20 May 2020 03:30:51 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id BD11A20829 for ; Wed, 20 May 2020 03:30:51 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728522AbgETDav (ORCPT ); Tue, 19 May 2020 23:30:51 -0400 Received: from szxga06-in.huawei.com ([45.249.212.32]:42586 "EHLO huawei.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1727029AbgETDau (ORCPT ); Tue, 19 May 2020 23:30:50 -0400 Received: from DGGEMS414-HUB.china.huawei.com (unknown [172.30.72.59]) by Forcepoint Email with ESMTP id BF96A762C7016041C142; Wed, 20 May 2020 11:30:48 +0800 (CST) Received: from [127.0.0.1] (10.166.213.90) by DGGEMS414-HUB.china.huawei.com (10.3.19.214) with Microsoft SMTP Server id 14.3.487.0; Wed, 20 May 2020 11:30:45 +0800 Subject: Re: [PATCH v7 0/4] support reserving crashkernel above 4G on arm64 kdump To: Arnd Bergmann References: <20191223152349.180172-1-chenzhou10@huawei.com> CC: Thomas Gleixner , Ingo Molnar , Catalin Marinas , Will Deacon , James Morse , Dave Young , "Bhupesh Sharma" , , , Simon Horman , , "linux-kernel@vger.kernel.org" , Linux ARM , "open list:DOCUMENTATION" From: chenzhou Message-ID: Date: Wed, 20 May 2020 11:30:43 +0800 User-Agent: Mozilla/5.0 (Windows NT 10.0; WOW64; rv:45.0) Gecko/20100101 Thunderbird/45.7.1 MIME-Version: 1.0 In-Reply-To: Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit X-Originating-IP: [10.166.213.90] X-CFilter-Loop: Reflected Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi Arnd, On 2020/5/19 18:21, Arnd Bergmann wrote: > On Thu, Mar 26, 2020 at 4:10 AM Chen Zhou wrote: >> Hi all, >> >> Friendly ping... > I was asked about this patch series, and see that you last posted it in > December. I think you should rebase it to linux-5.7-rc6 and post the > entire series again to make progress, as it's unlikely that any maintainer > would pick up the patches from last year. > > For the contents, everything seems reasonable to me, but I noticed that > you are adding a property to the /chosen node without adding the > corresponding documentation to > Documentation/devicetree/bindings/chosen.txt > > Please add that, and Cc the devicetree maintainers on the updated > patch. > > Arnd Thanks for your review and comments, i will rebase it to linux-5.7-rc6 and add the corresponding documentation. Thanks, Chen Zhou >> On 2019/12/23 23:23, Chen Zhou wrote: >>> This patch series enable reserving crashkernel above 4G in arm64. >>> >>> There are following issues in arm64 kdump: >>> 1. We use crashkernel=X to reserve crashkernel below 4G, which will fail >>> when there is no enough low memory. >>> 2. Currently, crashkernel=Y@X can be used to reserve crashkernel above 4G, >>> in this case, if swiotlb or DMA buffers are required, crash dump kernel >>> will boot failure because there is no low memory available for allocation. >>> >>> The previous changes and discussions can be retrieved from: >>> >>> Changes since [v6] >>> - Fix build errors reported by kbuild test robot. > ... > > . >