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Tue, 24 May 2022 16:15:22 GMT Received: from d06av24.portsmouth.uk.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 8C8534203F; Tue, 24 May 2022 16:29:28 +0000 (GMT) Received: from d06av24.portsmouth.uk.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 7466542045; Tue, 24 May 2022 16:29:27 +0000 (GMT) Received: from li-e979b1cc-23ba-11b2-a85c-dfd230f6cf82 (unknown [9.171.31.211]) by d06av24.portsmouth.uk.ibm.com (Postfix) with SMTP; Tue, 24 May 2022 16:29:27 +0000 (GMT) Date: Tue, 24 May 2022 18:29:25 +0200 From: Halil Pasic To: Jason Wang Cc: mst@redhat.com, virtualization@lists.linux-foundation.org, linux-kernel@vger.kernel.org, tglx@linutronix.de, peterz@infradead.org, paulmck@kernel.org, maz@kernel.org, cohuck@redhat.com, eperezma@redhat.com, lulu@redhat.com, sgarzare@redhat.com, xuanzhuo@linux.alibaba.com, Vineeth Vijayan , Peter Oberparleiter , linux-s390@vger.kernel.org, Halil Pasic Subject: Re: [PATCH V5 6/9] virtio-ccw: implement synchronize_cbs() Message-ID: <20220524182925.1f003a27.pasic@linux.ibm.com> In-Reply-To: <20220518035951.94220-7-jasowang@redhat.com> References: <20220518035951.94220-1-jasowang@redhat.com> <20220518035951.94220-7-jasowang@redhat.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=US-ASCII Content-Transfer-Encoding: 8bit X-TM-AS-GCONF: 00 X-Proofpoint-GUID: irvRSz61eAvMLdItYnRfpP_2g1rAUPnr X-Proofpoint-ORIG-GUID: bT4-wtffa73eU5IygeRJgv9Raz0BzNKc X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.205,Aquarius:18.0.874,Hydra:6.0.486,FMLib:17.11.64.514 definitions=2022-05-24_08,2022-05-23_01,2022-02-23_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 mlxlogscore=586 clxscore=1011 priorityscore=1501 phishscore=0 spamscore=0 mlxscore=0 adultscore=0 impostorscore=0 malwarescore=0 suspectscore=0 bulkscore=0 lowpriorityscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2202240000 definitions=main-2205240083 X-Spam-Status: No, score=-2.0 required=5.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_EF,RCVD_IN_MSPIKE_H2,SPF_HELO_NONE,SPF_PASS, T_SCC_BODY_TEXT_LINE autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Wed, 18 May 2022 11:59:48 +0800 Jason Wang wrote: > This patch tries to implement the synchronize_cbs() for ccw. For the > vring_interrupt() that is called via virtio_airq_handler(), the > synchronization is simply done via the airq_info's lock. For the > vring_interrupt() that is called via virtio_ccw_int_handler(), a per > device rwlock is introduced ans used in the synchronization method. > > Cc: Thomas Gleixner > Cc: Peter Zijlstra > Cc: "Paul E. McKenney" > Cc: Marc Zyngier > Cc: Halil Pasic > Cc: Cornelia Huck > Cc: Vineeth Vijayan > Cc: Peter Oberparleiter > Cc: linux-s390@vger.kernel.org > Signed-off-by: Jason Wang Reviewed-by: Halil Pasic