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Tue, 5 Jul 2022 14:37:03 +0000 (GMT) Received: from d06av26.portsmouth.uk.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id C00FBAE053; Tue, 5 Jul 2022 14:37:02 +0000 (GMT) Received: from [9.171.47.233] (unknown [9.171.47.233]) by d06av26.portsmouth.uk.ibm.com (Postfix) with ESMTP; Tue, 5 Jul 2022 14:37:02 +0000 (GMT) Message-ID: <9dc00e0032b3d753a18f2e9bbec4554402dc6aa4.camel@linux.ibm.com> Subject: Re: [RFC] gitlab: introduce s390x wasmtime job From: Ilya Leoshkevich To: Peter Maydell , "Daniel P." =?ISO-8859-1?Q?Berrang=E9?= Cc: Alex =?ISO-8859-1?Q?Benn=E9e?= , Philippe =?ISO-8859-1?Q?Mathieu-Daud=E9?= , Thomas Huth , Wainer dos Santos Moschetta , Beraldo Leal , Cornelia Huck , qemu-devel@nongnu.org, qemu-s390x@nongnu.org, Christian Borntraeger , Ulrich Weigand Date: Tue, 05 Jul 2022 16:37:02 +0200 In-Reply-To: References: <20220704224844.2903473-1-iii@linux.ibm.com> Content-Type: text/plain; charset="UTF-8" User-Agent: Evolution 3.42.4 (3.42.4-2.fc35) MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-TM-AS-GCONF: 00 X-Proofpoint-ORIG-GUID: 0fnVP96E5Ubuec8WP7o26LUgNYUuqbjN X-Proofpoint-GUID: q8c78kTHecvu6buMJFUjiTTTUGf7LW6V X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.205,Aquarius:18.0.883,Hydra:6.0.517,FMLib:17.11.122.1 definitions=2022-07-05_10,2022-06-28_01,2022-06-22_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 lowpriorityscore=0 malwarescore=0 bulkscore=0 priorityscore=1501 mlxscore=0 spamscore=0 suspectscore=0 impostorscore=0 clxscore=1015 adultscore=0 mlxlogscore=999 phishscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2204290000 definitions=main-2207050061 Received-SPF: pass client-ip=148.163.158.5; envelope-from=iii@linux.ibm.com; helo=mx0b-001b2d01.pphosted.com X-Spam_score_int: -19 X-Spam_score: -2.0 X-Spam_bar: -- X-Spam_report: (-2.0 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_EF=-0.1, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" On Tue, 2022-07-05 at 14:57 +0100, Peter Maydell wrote: > On Tue, 5 Jul 2022 at 14:04, Daniel P. Berrangé > wrote: > > If we put this job in QEMU CI someone will have to be able to > > interpret the results when it fails. > > In particular since this is qemu-user, the answer is probably > at least some of the time going to be "oh, well, qemu-user isn't > reliable > if you do complicated things in the guest". I'd be pretty wary of our > having > a "pass a big complicated guest code test suite under linux-user > mode" > in the CI path. > > -- PMM Actually exercising qemu-user is one of the goals here: just as an example, one of the things that the test suite found was commit 9a12adc704f9 ("linux-user/s390x: Fix unwinding from signal handlers"), so it's not only about the ISA. At least for s390x, we've noticed that various projects use qemu-user-based setups in their CI (either calling it explicitly, or via binfmt-misc), and we would like these workflows to be reliable, even if they try complicated (within reason) things there. Best regards, Ilya