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=-7.5 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,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 061DFC433E6 for ; Tue, 16 Mar 2021 08:55:15 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id BFDC565002 for ; Tue, 16 Mar 2021 08:55:14 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S235799AbhCPIyn (ORCPT ); Tue, 16 Mar 2021 04:54:43 -0400 Received: from us-smtp-delivery-124.mimecast.com ([216.205.24.124]:30697 "EHLO us-smtp-delivery-124.mimecast.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S235866AbhCPIyV (ORCPT ); Tue, 16 Mar 2021 04:54:21 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1615884860; h=from:from: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:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=wWL8TXDgSITEncLOH2wDWqKpeFdlpFDWceFXFRX5TOQ=; b=d9zXSe5MUFAtdvKiS17yM2ukn/inISpbfawx/P9Dd7gvv+qH8tYAi94ol7jbBVON6nf0N1 Z0DjyoQcAc01GTLwFvc5d20GKX/xL6eENULaYkh88pwT1q0iXfO/+Axex7ZP+DprAO/fke iYLGuMaBInnLmxZva6U3thyPN2sqCg8= Received: from mimecast-mx01.redhat.com (mimecast-mx01.redhat.com [209.132.183.4]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-219-qUXa6Pn7PayX9LbBOCiMZA-1; Tue, 16 Mar 2021 04:54:16 -0400 X-MC-Unique: qUXa6Pn7PayX9LbBOCiMZA-1 Received: from smtp.corp.redhat.com (int-mx02.intmail.prod.int.phx2.redhat.com [10.5.11.12]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id 05C48801597; Tue, 16 Mar 2021 08:54:15 +0000 (UTC) Received: from [10.36.114.203] (ovpn-114-203.ams2.redhat.com [10.36.114.203]) by smtp.corp.redhat.com (Postfix) with ESMTP id 69C1F60C0F; Tue, 16 Mar 2021 08:54:12 +0000 (UTC) Subject: Re: slow boot with 7fef431be9c9 ("mm/page_alloc: place pages to tail in __free_pages_core()") To: "Liang, Liang (Leo)" , Mike Rapoport Cc: "Deucher, Alexander" , "linux-kernel@vger.kernel.org" , amd-gfx list , Andrew Morton , "Huang, Ray" , "Koenig, Christian" , "Rafael J. Wysocki" , George Kennedy References: <0AE49D98-171A-42B9-9CFC-9193A9BD3346@redhat.com> <22437770-956e-f7b4-a8f6-3f1cc28c3ec2@redhat.com> <0cc972a1-5b40-3017-33f8-b2610489ee18@redhat.com> From: David Hildenbrand Organization: Red Hat GmbH Message-ID: Date: Tue, 16 Mar 2021 09:54:11 +0100 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:78.0) Gecko/20100101 Thunderbird/78.8.0 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-Scanned-By: MIMEDefang 2.79 on 10.5.11.12 Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 16.03.21 09:43, Liang, Liang (Leo) wrote: > [AMD Public Use] > > Hi David, > > Thanks for your explanation. We saw slow boot issue on our farm/QA's machines and mine. All of machines are same SoC/board. I cannot spot anything really special in the logs -- it's just ordinary system ram -- except: [ 0.000027] MTRR fixed ranges enabled: [ 0.000028] 00000-9FFFF write-back [ 0.000029] A0000-BFFFF uncachable [ 0.000030] C0000-FFFFF write-through [ 0.000031] MTRR variable ranges enabled: [ 0.000032] 0 base 000000000000 mask FFFF80000000 write-back [ 0.000034] 1 base 0000FFE00000 mask FFFFFFE00000 write-protect [ 0.000035] 2 base 000100000000 mask FFFFFF000000 write-protect [ 0.000036] 3 base 0000FFDE0000 mask FFFFFFFE0000 write-protect [ 0.000038] 4 base 0000FF000000 mask FFFFFFF80000 write-protect [ 0.000039] 5 disabled [ 0.000039] 6 disabled [ 0.000040] 7 disabled Not sure if "2 base 000100000000" indicates something nasty. Not sure how to interpret the masks. Can you provide the output of "cat /proc/mtrr" ? -- Thanks, David / dhildenb