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=-2.2 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,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 C5247C43603 for ; Mon, 9 Dec 2019 14:13:51 +0000 (UTC) Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (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 9403F2073D for ; Mon, 9 Dec 2019 14:13:51 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 9403F2073D Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=huawei.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Received: from localhost ([::1]:40644 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1ieJnK-00032A-Po for qemu-devel@archiver.kernel.org; Mon, 09 Dec 2019 09:13:50 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]:34604) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1ieJmd-0002Sx-JP for qemu-devel@nongnu.org; Mon, 09 Dec 2019 09:13:08 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1ieJmc-0007XT-JF for qemu-devel@nongnu.org; Mon, 09 Dec 2019 09:13:07 -0500 Received: from szxga07-in.huawei.com ([45.249.212.35]:53060 helo=huawei.com) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1ieJmZ-0007E9-Fr; Mon, 09 Dec 2019 09:13:04 -0500 Received: from DGGEMS407-HUB.china.huawei.com (unknown [172.30.72.60]) by Forcepoint Email with ESMTP id D162478339045A5766C6; Mon, 9 Dec 2019 22:12:42 +0800 (CST) Received: from [127.0.0.1] (10.142.68.147) by DGGEMS407-HUB.china.huawei.com (10.3.19.207) with Microsoft SMTP Server id 14.3.439.0; Mon, 9 Dec 2019 22:12:37 +0800 Subject: Re: [RESEND PATCH v21 5/6] target-arm: kvm64: handle SIGBUS signal from kernel or KVM To: Beata Michalska References: <20191111014048.21296-1-zhengxiang9@huawei.com> <20191111014048.21296-6-zhengxiang9@huawei.com> <238ea7b3-9d6d-e3f7-40c9-e3e62b5fb477@huawei.com> From: gengdongjiu Message-ID: <650e26cf-e007-1e31-cd0a-4042bb9fa6a8@huawei.com> Date: Mon, 9 Dec 2019 22:12:33 +0800 User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:52.0) Gecko/20100101 Thunderbird/52.3.0 MIME-Version: 1.0 In-Reply-To: Content-Type: text/plain; charset="utf-8" Content-Language: en-US Content-Transfer-Encoding: 7bit X-Originating-IP: [10.142.68.147] X-CFilter-Loop: Reflected X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] [fuzzy] X-Received-From: 45.249.212.35 X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Peter Maydell , ehabkost@redhat.com, kvm@vger.kernel.org, mst@redhat.com, wanghaibin.wang@huawei.com, mtosatti@redhat.com, qemu-devel@nongnu.org, linuxarm@huawei.com, shannon.zhaosl@gmail.com, Xiang Zheng , qemu-arm@nongnu.org, james.morse@arm.com, jonathan.cameron@huawei.com, Igor Mammedov , pbonzini@redhat.com, xuwei5@huawei.com, Laszlo Ersek , rth@twiddle.net Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" On 2019/12/9 21:05, Beata Michalska wrote: >> Here we set the FnV to not valid, not to set it to valid. >> because Guest will use the physical address that recorded in APEI table. >> > To be precise : the FnV is giving the status of FAR - so what you are setting > here is status of 0b0 which means FAR is valid, not FnV on it's own. > And my point was that you are changing the prototype for syn_data_abort_no_iss > just for this case only so I was just thinking that it might not be > worth that, instead > you could just set it here ... or to be more flexible , provide a way > to set specific bits > on demand. No, I set the FnV to 0b1, not 0b0, the whole esr_el1's value is 0x96000410, as shown below log: I remember changing the prototype for syn_data_abort_no_iss is suggested by Peter Maydell. [1]: [ 62.851830] Internal error: synchronous external abort: 96000410 [#1] PREEMPT SMP [ 62.854465] Modules linked in: >