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=-12.3 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH, MAILING_LIST_MULTI,NICE_REPLY_A,SPF_HELO_NONE,URIBL_BLOCKED,USER_AGENT_SANE_1 autolearn=ham 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 88D28C433B4 for ; Thu, 13 May 2021 18:18:29 +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 4F3B9613CA for ; Thu, 13 May 2021 18:18:29 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 4F3B9613CA 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.127040.238694 (Exim 4.92) (envelope-from ) id 1lhFuZ-0005gg-G8; Thu, 13 May 2021 18:18:15 +0000 X-Outflank-Mailman: Message body and most headers restored to incoming version Received: by outflank-mailman (output) from mailman id 127040.238694; Thu, 13 May 2021 18:18:15 +0000 Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1lhFuZ-0005gZ-D9; Thu, 13 May 2021 18:18:15 +0000 Received: by outflank-mailman (input) for mailman id 127040; Thu, 13 May 2021 18:18:14 +0000 Received: from mail.xenproject.org ([104.130.215.37]) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1lhFuY-0005gT-No for xen-devel@lists.xenproject.org; Thu, 13 May 2021 18:18:14 +0000 Received: from xenbits.xenproject.org ([104.239.192.120]) by mail.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1lhFuY-0008GP-Hh; Thu, 13 May 2021 18:18:14 +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 1lhFuY-00061B-Bj; Thu, 13 May 2021 18:18:14 +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=L8aKK04N7qjvZWJ9p9nrmKWBIoOnOWBIu3ogpWvCblM=; b=3dpYZvwvUTYA6uDfHrrLgihs+a qmHVC5V6W15vkAbgf/DoHn/oqeZkUOAdpvH4H7g6LORmdwwtpaAc6y4sLByP05E2IOgM0NIedqn4Q o9Ohju/WPvRtncmzwLYzc4AJRLDpRMAyksk5QzeZ69PKKqoQv62RpwQ1/iapldzbP3xI=; 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: Thu, 13 May 2021 19:18:12 +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 On 11/05/2021 02:11, Henry Wang wrote: > Hi Julien, Hi Henry, > >> From: Julien Grall >> Hi Henry, >> >> On 07/05/2021 05:06, Henry Wang wrote: >>>> From: Julien Grall >>>> On 28/04/2021 10:28, Henry Wang wrote: >> [...] >> >>> 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? > > No, I am afraid this is with your patch series applied, and that is why I > am a little bit confused about the error log... You are hitting the BUG() at the end of alloc_boot_pages(). This is hit because the boot allocator couldn't allocate memory for your request. Would you be able to apply the following diff and paste the output here? diff --git a/xen/common/page_alloc.c b/xen/common/page_alloc.c index ace6333c18ea..dbb736fdb275 100644 --- a/xen/common/page_alloc.c +++ b/xen/common/page_alloc.c @@ -329,6 +329,8 @@ void __init init_boot_pages(paddr_t ps, paddr_t pe) if ( pe <= ps ) return; + printk("%s: ps %"PRI_paddr" pe %"PRI_paddr"\n", __func__, ps, pe); + first_valid_mfn = mfn_min(maddr_to_mfn(ps), first_valid_mfn); bootmem_region_add(ps >> PAGE_SHIFT, pe >> PAGE_SHIFT); @@ -395,6 +397,8 @@ mfn_t __init alloc_boot_pages(unsigned long nr_pfns, unsigned long pfn_align) unsigned long pg, _e; unsigned int i = nr_bootmem_regions; + printk("%s: nr_pfns %lu pfn_align %lu\n", __func__, nr_pfns, pfn_align); + BUG_ON(!nr_bootmem_regions); while ( i-- ) Cheers, -- Julien Grall