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Tue, 23 Feb 2021 12:14:53 +0000 (GMT) Received: from li-e979b1cc-23ba-11b2-a85c-dfd230f6cf82 (unknown [9.171.41.180]) by b06wcsmtp001.portsmouth.uk.ibm.com (Postfix) with SMTP; Tue, 23 Feb 2021 12:14:53 +0000 (GMT) Date: Tue, 23 Feb 2021 13:14:51 +0100 From: Halil Pasic To: "Daniel P. =?UTF-8?B?QmVycmFuZ8Op?=" Subject: Re: [PATCH v2 1/1] hw/s390x: modularize virtio-gpu-ccw Message-ID: <20210223131451.255fb4f8.pasic@linux.ibm.com> In-Reply-To: References: <20210222125548.346166-1-pasic@linux.ibm.com> Organization: IBM X-Mailer: Claws Mail 3.17.8 (GTK+ 2.24.32; x86_64-redhat-linux-gnu) MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-TM-AS-GCONF: 00 X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:6.0.369, 18.0.761 definitions=2021-02-23_05:2021-02-23, 2021-02-23 signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 mlxscore=0 bulkscore=0 adultscore=0 clxscore=1015 impostorscore=0 suspectscore=0 spamscore=0 lowpriorityscore=0 phishscore=0 mlxlogscore=999 malwarescore=0 priorityscore=1501 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2009150000 definitions=main-2102230105 Received-SPF: pass client-ip=148.163.156.1; envelope-from=pasic@linux.ibm.com; helo=mx0a-001b2d01.pphosted.com X-Spam_score_int: -26 X-Spam_score: -2.7 X-Spam_bar: -- X-Spam_report: (-2.7 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_LOW=-0.7, RCVD_IN_MSPIKE_H2=-0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action 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: Thomas Huth , Boris Fiuczynski , Eduardo Habkost , David Hildenbrand , Cornelia Huck , Richard Henderson , qemu-devel@nongnu.org, Bruce Rogers , Christian Borntraeger , qemu-s390x@nongnu.org, "Michael S. Tsirkin" , Gerd Hoffmann , Paolo Bonzini , =?UTF-8?B?TWFyYy1BbmRyw6k=?= Lureau Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" On Mon, 22 Feb 2021 17:30:50 +0000 Daniel P. Berrangé wrote: > > Paolo, Daniel, > > I am in general (s390 unrelated) a bit puzzled about the scenario of QEMU > > being modularized. > > Libvirt probes QEMU executables for their capabilities and creates a > > capabilities cache of the probed QEMU binary. There are a few triggers that > > invalidate the cache. One is the QEMU binary changing. > > Is there one for QEMU modules being installed or uninstalled? > > How is that supposed to work? > > Libvirt doesn't check the modules specifically, but it does look at the > mtime on the directory containing modules, and that should be touched > when a moduled is added/removed. This is since libvirt 6.8.0 or later. It seems we are covered, at least upstream. , Regards, Halil