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=-5.3 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,NICE_REPLY_A,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 39F16C4743C for ; Wed, 23 Jun 2021 07:25:19 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 179EC61185 for ; Wed, 23 Jun 2021 07:25:19 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229833AbhFWH1c (ORCPT ); Wed, 23 Jun 2021 03:27:32 -0400 Received: from szxga02-in.huawei.com ([45.249.212.188]:8435 "EHLO szxga02-in.huawei.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229660AbhFWH1b (ORCPT ); Wed, 23 Jun 2021 03:27:31 -0400 Received: from dggemv704-chm.china.huawei.com (unknown [172.30.72.56]) by szxga02-in.huawei.com (SkyGuard) with ESMTP id 4G8vpp6VhnzZky5; Wed, 23 Jun 2021 15:22:10 +0800 (CST) Received: from dggpemm500001.china.huawei.com (7.185.36.107) by dggemv704-chm.china.huawei.com (10.3.19.47) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2176.2; Wed, 23 Jun 2021 15:25:11 +0800 Received: from [10.174.177.243] (10.174.177.243) by dggpemm500001.china.huawei.com (7.185.36.107) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2176.2; Wed, 23 Jun 2021 15:25:10 +0800 Subject: Re: [PATCH stable v5.10 0/7] arm64: Default to 32-bit wide ZONE_DMA To: Greg KH CC: Jing Xiangfeng , Nicolas Saenz Julienne , , , , , , , , , , , , , Li Huafei References: <20210303073319.2215839-1-jingxiangfeng@huawei.com> <9bc396116372de5b538d71d8f9ae9c3259f1002e.camel@suse.de> <827b317d7f5da6e048806922098291faacdb19f9.camel@suse.de> <604597E3.5000605@huawei.com> <31cd8432-2466-555d-7617-ae48cbcd4244@huawei.com> <8b0a4f25-0803-9341-f3a4-277d16802295@huawei.com> From: Kefeng Wang Message-ID: Date: Wed, 23 Jun 2021 15:25:10 +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"; format=flowed Content-Language: en-US Content-Transfer-Encoding: 7bit X-Originating-IP: [10.174.177.243] X-ClientProxiedBy: dggems706-chm.china.huawei.com (10.3.19.183) To dggpemm500001.china.huawei.com (7.185.36.107) X-CFilter-Loop: Reflected Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org On 2021/6/23 15:12, Greg KH wrote: > On Wed, Jun 23, 2021 at 02:59:59PM +0800, Kefeng Wang wrote: >> Hi Greg, >> >> There are two more patches about the ZONE_DMA[32] changes, > > What ZONE_DMA changes? See the subject, [PATCH stable v5.10 0/7] arm64: Default to 32-bit wide ZONE_DMA, We asked the ARM64 ZONE_DMA change backport before, link[1] > >> especially the >> second one, both them need be backported, thanks. > > Backported to where? stable 5.10 > >> 791ab8b2e3db - arm64: Ignore any DMA offsets in the max_zone_phys() >> calculation >> 2687275a5843 - arm64: Force NO_BLOCK_MAPPINGS if crashkernel reservation is >> required > > Have you tried these patches? Where do they need to be applied to? Yes, we tested it, without them, especially the second one, we will meet crash when using kexec boot, also there is discussion in [2] and [3] from Catalin. > > confused, > Sorry about this, should add more information, thanks. [1] https://lore.kernel.org/linux-riscv/20210303073319.2215839-1-jingxiangfeng@huawei.com/ [2] https://lore.kernel.org/linux-devicetree/e60d643e-4879-3fc3-737d-2c145332a6d7@arm.com/ [3] https://lore.kernel.org/linux-arm-kernel/20201119175556.18681-1-catalin.marinas@arm.com/ > greg k-h > . >