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=-7.3 required=3.0 tests=BAYES_00,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 67009C433B4 for ; Mon, 10 May 2021 16:58:50 +0000 (UTC) Received: from lists.xenproject.org (lists.xenproject.org [192.237.175.120]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 2EE00611F0 for ; Mon, 10 May 2021 16:58:50 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 2EE00611F0 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=xen.org Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=xen-devel-bounces@lists.xenproject.org Received: from list by lists.xenproject.org with outflank-mailman.125377.235996 (Exim 4.92) (envelope-from ) id 1lg9Es-0006Iz-Su; Mon, 10 May 2021 16:58:38 +0000 X-Outflank-Mailman: Message body and most headers restored to incoming version Received: by outflank-mailman (output) from mailman id 125377.235996; Mon, 10 May 2021 16:58:38 +0000 Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1lg9Es-0006Is-Q6; Mon, 10 May 2021 16:58:38 +0000 Received: by outflank-mailman (input) for mailman id 125377; Mon, 10 May 2021 16:58:37 +0000 Received: from mail.xenproject.org ([104.130.215.37]) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1lg9Eq-0006Im-VX for xen-devel@lists.xenproject.org; Mon, 10 May 2021 16:58:36 +0000 Received: from xenbits.xenproject.org ([104.239.192.120]) by mail.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1lg9Eq-0001Yo-MM; Mon, 10 May 2021 16:58:36 +0000 Received: from [54.239.6.185] (helo=a483e7b01a66.ant.amazon.com) by xenbits.xenproject.org with esmtpsa (TLS1.3:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.92) (envelope-from ) id 1lg9Eq-0005rF-Ge; Mon, 10 May 2021 16:58:36 +0000 X-BeenThere: xen-devel@lists.xenproject.org List-Id: Xen developer discussion List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Errors-To: xen-devel-bounces@lists.xenproject.org Precedence: list Sender: "Xen-devel" DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=xen.org; s=20200302mail; h=Content-Transfer-Encoding:Content-Type:In-Reply-To: MIME-Version:Date:Message-ID:From:References:Cc:To:Subject; bh=NyujeM3T0IpczxTYLEBttv+KFwnO26q5AkcjabW6pbU=; b=OREN/ysARrPiM9eWqtkZsc+N4P glMgsmR6O2shmX4eLGAb3JrxmGl++yjkgjw8/qGOXYd6ZMuKd+gJdnCbxwEoH+FeEOQLSYziqrmut ZqUTzdEVsyCAMsZy50v1y2+vLBxPGbPkHzYIklqq90bcCfNrJ2fz23Nbnabf/T8UOFRs=; Subject: Re: Discussion of Xenheap problems on AArch64 To: Henry Wang , "sstabellini@kernel.org" , "xen-devel@lists.xenproject.org" Cc: Wei Chen , Penny Zheng , Bertrand Marquis References: <2a65b8c0-fccc-2ccc-f736-7f3f666e84d1@xen.org> From: Julien Grall Message-ID: Date: Mon, 10 May 2021 17:58:34 +0100 User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:78.0) Gecko/20100101 Thunderbird/78.10.1 MIME-Version: 1.0 In-Reply-To: Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: en-GB Content-Transfer-Encoding: 7bit Hi Henry, On 07/05/2021 05:06, Henry Wang wrote: >> From: Julien Grall >> On 28/04/2021 10:28, Henry Wang wrote: >>> Hi Julien, >> >> Hi Henry, >> >>> >>> I've done some test about the patch series in >>> https://xenbits.xen.org/gitweb/?p=people/julieng/xen- >> unstable.git;a=shortlog;h=refs/heads/pt/rfc-v2 >>> >> >> Thanks you for the testing. Some questions below. >> >> I am a bit confused with the output with and without my patches. Both of >> them are showing a data abort in clear_page(). >> >> Above, you suggested that there is a big gap between the two memory >> banks. Are the banks still point to actual RAM? > > Another sorry for the very late reply, we had a 5 day public holiday in > China and it also took me some time to figure out how to configure the > FVP (it turned out I have to set -C bp.secure_memory=false to access > some parts of memory higher than 4G). No worries. I never tried to tweak the memory layout on the FVP before. It is good to know it can be done to properly test memory issue :). [...] > when I continue booting Xen, I got following error log: > > (XEN) CPU: 0 > (XEN) PC: 00000000002b5a5c alloc_boot_pages+0x94/0x98 > (XEN) LR: 00000000002ca3bc > (XEN) SP: 00000000002ffde0 > (XEN) CPSR: 600003c9 MODE:64-bit EL2h (Hypervisor, handler) > (XEN) > (XEN) VTCR_EL2: 80000000 > (XEN) VTTBR_EL2: 0000000000000000 > (XEN) > (XEN) SCTLR_EL2: 30cd183d > (XEN) HCR_EL2: 0000000000000038 > (XEN) TTBR0_EL2: 000000008413c000 > (XEN) > (XEN) ESR_EL2: f2000001 > (XEN) HPFAR_EL2: 0000000000000000 > (XEN) FAR_EL2: 0000000000000000 > (XEN) > (XEN) Xen call trace: > (XEN) [<00000000002b5a5c>] alloc_boot_pages+0x94/0x98 (PC) > (XEN) [<00000000002ca3bc>] setup_frametable_mappings+0xa4/0x108 (LR) > (XEN) [<00000000002ca3bc>] setup_frametable_mappings+0xa4/0x108 > (XEN) [<00000000002cb988>] start_xen+0x344/0xbcc > (XEN) [<00000000002001c0>] arm64/head.o#primary_switched+0x10/0x30 > (XEN) > (XEN) **************************************** > (XEN) Panic on CPU 0: > (XEN) Xen BUG at page_alloc.c:432 > (XEN) **************************************** This is happening without my patch series applied, right? If so, what happen if you apply it? Cheers, -- Julien Grall