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=-6.1 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS 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 B579FC48BC2 for ; Wed, 23 Jun 2021 07:34:46 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id 60D8761076 for ; Wed, 23 Jun 2021 07:34:46 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 60D8761076 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=linuxfoundation.org Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=owner-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix) id 522518D0001; Wed, 23 Jun 2021 03:34:45 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id 4D26A6B0036; Wed, 23 Jun 2021 03:34:45 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 373488D0001; Wed, 23 Jun 2021 03:34:45 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0099.hostedemail.com [216.40.44.99]) by kanga.kvack.org (Postfix) with ESMTP id EDAA76B0011 for ; Wed, 23 Jun 2021 03:34:44 -0400 (EDT) Received: from smtpin21.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay04.hostedemail.com (Postfix) with ESMTP id 1DADD235D8 for ; Wed, 23 Jun 2021 07:34:45 +0000 (UTC) X-FDA: 78284176530.21.F71EFC0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by imf29.hostedemail.com (Postfix) with ESMTP id ADAB842D for ; Wed, 23 Jun 2021 07:34:44 +0000 (UTC) Received: by mail.kernel.org (Postfix) with ESMTPSA id 1A3AD60FDA; Wed, 23 Jun 2021 07:34:43 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1624433683; bh=zVp16Al2ZaNe9A+v+foD48Mk+8GUKP4jIZTczxSQGmk=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=iDDXW91vE9Qx57L7b5haWZvIM9DzXJRBIBWRkH886SUQGTDNQq3gblzxcUXIs+5Wx 8QOvDnekrwdP7sMvav6Kw/GXmVf+XE+w0FdlxC6SFRBfLAdZ0CWglSAcO/awEHEmmx dStYpmF9h1pI35K1nJNtUtvTZo4jV5mXoddxp4IE= Date: Wed, 23 Jun 2021 09:34:36 +0200 From: Greg KH To: Kefeng Wang Cc: Jing Xiangfeng , Nicolas Saenz Julienne , catalin.marinas@arm.com, will@kernel.org, akpm@linux-foundation.org, guohanjun@huawei.com, sudeep.holla@arm.com, song.bao.hua@hisilicon.com, ardb@kernel.org, anshuman.khandual@arm.com, stable@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org, Li Huafei Subject: Re: [PATCH stable v5.10 0/7] arm64: Default to 32-bit wide ZONE_DMA Message-ID: References: <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> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: Authentication-Results: imf29.hostedemail.com; dkim=pass header.d=linuxfoundation.org header.s=korg header.b=iDDXW91v; spf=pass (imf29.hostedemail.com: domain of gregkh@linuxfoundation.org designates 198.145.29.99 as permitted sender) smtp.mailfrom=gregkh@linuxfoundation.org; dmarc=pass (policy=none) header.from=linuxfoundation.org X-Stat-Signature: sdc5ptwwqe4t9qwdnoa4p1y3xu3hmq6p X-Rspamd-Queue-Id: ADAB842D X-Rspamd-Server: rspam06 X-HE-Tag: 1624433684-208850 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: On Wed, Jun 23, 2021 at 03:25:10PM +0800, Kefeng Wang wrote: > > > 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] The subject doesn't help much, sorry, what commit does this refer to? What happened to it? Was it accepted or rejected? > > > especially the > > > second one, both them need be backported, thanks. > > > > Backported to where? > > stable 5.10 Why? > > > 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. These [] do not seem to be links :( thanks, greg k-h