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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 5EFD9C001B0 for ; Thu, 10 Aug 2023 09:19:30 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234828AbjHJJT3 (ORCPT ); Thu, 10 Aug 2023 05:19:29 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:45298 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234822AbjHJJTR (ORCPT ); Thu, 10 Aug 2023 05:19:17 -0400 X-Greylist: delayed 508 seconds by postgrey-1.37 at lindbergh.monkeyblade.net; Thu, 10 Aug 2023 02:17:09 PDT Received: from isrv.corpit.ru (isrv.corpit.ru [86.62.121.231]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 42B453C02 for ; Thu, 10 Aug 2023 02:17:09 -0700 (PDT) Received: from tsrv.corpit.ru (tsrv.tls.msk.ru [192.168.177.2]) by isrv.corpit.ru (Postfix) with ESMTP id C86E31982B; Thu, 10 Aug 2023 12:08:43 +0300 (MSK) Received: from [192.168.177.130] (mjt.wg.tls.msk.ru [192.168.177.130]) by tsrv.corpit.ru (Postfix) with ESMTP id 10BB11D1D9; Thu, 10 Aug 2023 12:08:37 +0300 (MSK) Message-ID: <38e69323-0185-32bb-2de1-8e5b36de2abc@tls.msk.ru> Date: Thu, 10 Aug 2023 12:08:36 +0300 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:102.0) Gecko/20100101 Thunderbird/102.14.0 Subject: Re: LTP test related to virtio releasing and reassigning resource leads to guest hung Content-Language: en-US To: "longguang.yue" , qemu-devel , linux-kernel References: <461df15f.15e2d.189deaa6eed.Coremail.kvmluck@163.com> From: Michael Tokarev In-Reply-To: <461df15f.15e2d.189deaa6eed.Coremail.kvmluck@163.com> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 10.08.2023 11:57, longguang.yue wrote: > Hi, all: > A ltp test leads to guest hung(io hung), the test releases virtio device resource and then reassign. > I find device’s mem prefetchable resource 64-bit is changed. > > ltp > test: https://github.com/linux-test-project/ltp/blob/522d7fba4afc84e07b252aa4cd91b241e81d6613/testcases/kernel/device-drivers/pci/tpci_kernel/ltp_tpci.c#L428 > > Do you know what cause the problem? > > Thanks very much. > > -------------------------- > ENV: kernel 5.10.0, qemu 6.2 Current qemu is 8.1 (well, almost, to be released this month; previous release is 8.0 anyway). This might be interesting to test in a current version before going any further. Thanks, /mjt