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 kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by smtp.lore.kernel.org (Postfix) with ESMTP id 6CA54C43334 for ; Wed, 15 Jun 2022 10:04:15 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id 0637C6B0071; Wed, 15 Jun 2022 06:04:15 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id F3D926B0075; Wed, 15 Jun 2022 06:04:14 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id DCDCB6B0074; Wed, 15 Jun 2022 06:04:14 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from relay.hostedemail.com (smtprelay0015.hostedemail.com [216.40.44.15]) by kanga.kvack.org (Postfix) with ESMTP id CDCF56B0071 for ; Wed, 15 Jun 2022 06:04:14 -0400 (EDT) Received: from smtpin18.hostedemail.com (a10.router.float.18 [10.200.18.1]) by unirelay10.hostedemail.com (Postfix) with ESMTP id 9C26D310 for ; Wed, 15 Jun 2022 10:04:14 +0000 (UTC) X-FDA: 79580034828.18.0E9F128 Received: from dfw.source.kernel.org (dfw.source.kernel.org [139.178.84.217]) by imf30.hostedemail.com (Postfix) with ESMTP id 3DFF480082 for ; Wed, 15 Jun 2022 10:04:14 +0000 (UTC) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by dfw.source.kernel.org (Postfix) with ESMTPS id 781C660B76; Wed, 15 Jun 2022 10:04:13 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 32E08C34115; Wed, 15 Jun 2022 10:04:06 +0000 (UTC) Date: Wed, 15 Jun 2022 11:04:02 +0100 From: Catalin Marinas To: Wupeng Ma Cc: corbet@lwn.net, will@kernel.org, ardb@kernel.org, tglx@linutronix.de, mingo@redhat.com, bp@alien8.de, dave.hansen@linux.intel.com, x86@kernel.org, hpa@zytor.com, dvhart@infradead.org, andy@infradead.org, rppt@kernel.org, akpm@linux-foundation.org, paul.walmsley@sifive.com, palmer@dabbelt.com, aou@eecs.berkeley.edu, paulmck@kernel.org, keescook@chromium.org, songmuchun@bytedance.com, rdunlap@infradead.org, damien.lemoal@opensource.wdc.com, swboyd@chromium.org, wei.liu@kernel.org, robin.murphy@arm.com, david@redhat.com, anshuman.khandual@arm.com, thunder.leizhen@huawei.com, wangkefeng.wang@huawei.com, gpiccoli@igalia.com, chenhuacai@kernel.org, geert@linux-m68k.org, vijayb@linux.microsoft.com, linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-efi@vger.kernel.org, platform-driver-x86@vger.kernel.org, linux-mm@kvack.org, linux-riscv@lists.infradead.org Subject: Re: [PATCH v5 4/5] arm64: mm: Only remove nomap flag for initrd Message-ID: References: <20220614092156.1972846-1-mawupeng1@huawei.com> <20220614092156.1972846-5-mawupeng1@huawei.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20220614092156.1972846-5-mawupeng1@huawei.com> ARC-Seal: i=1; s=arc-20220608; d=hostedemail.com; t=1655287454; a=rsa-sha256; cv=none; b=ZggBYwfI4Mh2SHEnemAxNtkgMtAWmMf9lt3vckCkdSf1y14XDT9uw8B7gp6uumbNj/7+b2 i4BbTV3f1FHOrhw9PvTCgdJvmmnxYdU6008cCYmVOn4KDeRHWsuusBJ4m+3oeP1ikOnGR1 R6DqElVIiWV9HPGLSmSaIephfyHpQX4= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=hostedemail.com; s=arc-20220608; t=1655287454; h=from:from:sender:reply-to:subject:subject:date:date: message-id:message-id:to:to:cc:cc:mime-version:mime-version: content-type:content-type:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=6ZrNyaO52K11uTLL4BXwbYs5skDzEofXAHTwC+0CWp4=; b=vRILscfqYxLJY5BqBXiFptoM8QC9V8GK6DRHYjNT+kXrKAis63UsUjzMPYhULxYiKYgKPq 3yAGiVM6kJkyNdfSGxGqk4iU9ATMvgBfeRMCbmUtJDrOjTbVMYnGvQ7ooBxRxXRKGXUymm 4osgsTPqROwtyZHiaqWEodu1+SpRsIw= ARC-Authentication-Results: i=1; imf30.hostedemail.com; dkim=none; dmarc=fail reason="SPF not aligned (relaxed), No valid DKIM" header.from=arm.com (policy=none); spf=pass (imf30.hostedemail.com: domain of cmarinas@kernel.org designates 139.178.84.217 as permitted sender) smtp.mailfrom=cmarinas@kernel.org Authentication-Results: imf30.hostedemail.com; dkim=none; dmarc=fail reason="SPF not aligned (relaxed), No valid DKIM" header.from=arm.com (policy=none); spf=pass (imf30.hostedemail.com: domain of cmarinas@kernel.org designates 139.178.84.217 as permitted sender) smtp.mailfrom=cmarinas@kernel.org X-Rspam-User: X-Rspamd-Server: rspam09 X-Rspamd-Queue-Id: 3DFF480082 X-Stat-Signature: xipwc5i9pndfdj4zjf1qbwjkr6xpqknr X-HE-Tag: 1655287454-539135 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 Tue, Jun 14, 2022 at 05:21:55PM +0800, Wupeng Ma wrote: > From: Ma Wupeng > > Commit 177e15f0c144 ("arm64: add the initrd region to the linear mapping explicitly") > remove all the flags of the memory used by initrd. This is fine since > MEMBLOCK_MIRROR is not used in arm64. > > However with mirrored feature introduced to arm64, this will clear the mirrored > flag used by initrd, which will lead to error log printed by > find_zone_movable_pfns_for_nodes() if the lower 4G range has some non-mirrored > memory. > > To solve this problem, only MEMBLOCK_NOMAP flag will be removed via > memblock_clear_nomap(). > > Signed-off-by: Ma Wupeng > Reviewed-by: Ard Biesheuvel Acked-by: Catalin Marinas