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Tue, 7 Jul 2026 09:02:44 +0000 (GMT) Received: from li-4c4c4544-004d-4810-8043-b7c04f423534.ibm.com.com (unknown [9.61.160.85]) by smtpav03.dal12v.mail.ibm.com (Postfix) with ESMTP; Tue, 7 Jul 2026 09:02:44 +0000 (GMT) From: Anthony Krowiak To: linux-s390@vger.kernel.org, linux-kernel@vger.kernel.org, kvm@vger.kernel.org Cc: jjherne@linux.ibm.com, borntraeger@de.ibm.com, mjrosato@linux.ibm.com, pasic@linux.ibm.com, alex@shazbot.org, kwankhede@nvidia.com, fiuczy@linux.ibm.com, pbonzini@redhat.com, frankja@linux.ibm.com, imbrenda@linux.ibm.com, agordeev@linux.ibm.com, hca@linux.ibm.com, gor@linux.ibm.com Subject: [PATCH v4 14/15] s390/vfio-ap: Add 'migratable' feature to sysfs 'features' attribute Date: Tue, 7 Jul 2026 05:02:16 -0400 Message-ID: <20260707090226.3206695-15-akrowiak@linux.ibm.com> X-Mailer: git-send-email 2.53.0 In-Reply-To: <20260707090226.3206695-1-akrowiak@linux.ibm.com> References: <20260707090226.3206695-1-akrowiak@linux.ibm.com> Precedence: bulk X-Mailing-List: kvm@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-TM-AS-GCONF: 00 X-Proofpoint-Spam-Info: AW1haW4tMjYwNzA3MDA4NCBTYWx0ZWRfX5EU6Ri5WYaUs KYkDWkZFQCk7a6HLLuLGmn2Z4oMNbjPcq/npy8G7Nj9oOQ6KPhG9lWhuBUbGXkxOUn5FBrK30Aw 2vLIUmeUT0vTaEGOvbs9EK4e33DQIL0= X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwNzA3MDA4NCBTYWx0ZWRfX4R8s9nQDwcGR R1sRuQ2W+GENMQ71tAkliVsw+JOUGMKF3zfLKzgGbt669Lm/5paEYYztx5KPxN+Ao/pBQ06v2tN dlQhTQCGbta36NBaNpuh1e7hz/7BF9XNdtHFA0CD2jy4TaKHcWVLCCiRspDKGxAR+Ja7USzkeo8 ex1AqwstRrc0TVuE358URblZaosO0xQHVGf7Agy+RMz5IWnshGE2gIdSigwsNnufykOgeywlyXX GyARUTd28H9i8kIGOHF1iosBjoVrIdy0U1MJoAs8aS/GuQGnISXIvzjHMm5GaGhlf9lzfU99DQY LvbfGCDbZsQQnAPSv5pGpnd8g+IYvy4DqNi0tjyKJwd1nrJE3nVXM817MD6cxwNRgq0R7GLiI8p WFzlfsxqxBkqq3TGq6wL2RQ4Bnr2QYTw1NOCwbvvciELPcf/xR0OKmxxa6dM3ppvkeoqN34YrOv 44jqGfTS+O24+71U0KA== X-Proofpoint-GUID: fdOIiKGxcdgvQlJ3Go6_1eRKyc1h0uSu X-Authority-Analysis: v=2.4 cv=Oot/DS/t c=1 sm=1 tr=0 ts=6a4cc0b8 cx=c_pps a=AfN7/Ok6k8XGzOShvHwTGQ==:117 a=AfN7/Ok6k8XGzOShvHwTGQ==:17 a=RAioF0-LDSMA:10 a=VkNPw1HP01LnGYTKEx00:22 a=RnoormkPH1_aCDwRdu11:22 a=uAbxVGIbfxUO_5tXvNgY:22 a=VnNF1IyMAAAA:8 a=CB_8iKbeFirw2v3l3xgA:9 X-Proofpoint-ORIG-GUID: fdOIiKGxcdgvQlJ3Go6_1eRKyc1h0uSu X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1143,Hydra:6.1.134,FMLib:17.12.100.49 definitions=2026-07-07_02,2026-07-06_02,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 bulkscore=0 lowpriorityscore=0 clxscore=1015 impostorscore=0 phishscore=0 malwarescore=0 suspectscore=0 spamscore=0 adultscore=0 priorityscore=1501 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2606150000 definitions=main-2607070084 Add the 'migratable' feature to the features provided by the sysfs /sys/devices/vfio_ap/matrix/feature attribute to indicate that migration of vfio devices is supported. Signed-off-by: Anthony Krowiak --- drivers/s390/crypto/vfio_ap_drv.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/drivers/s390/crypto/vfio_ap_drv.c b/drivers/s390/crypto/vfio_ap_drv.c index fd7394d81880..d2fc3598cd24 100644 --- a/drivers/s390/crypto/vfio_ap_drv.c +++ b/drivers/s390/crypto/vfio_ap_drv.c @@ -26,9 +26,11 @@ MODULE_LICENSE("GPL v2"); struct ap_matrix_dev *matrix_dev; debug_info_t *vfio_ap_dbf_info; +#define FEATURES "guest_matrix hotplug ap_config migratable" + static ssize_t features_show(struct device *dev, struct device_attribute *attr, char *buf) { - return sysfs_emit(buf, "guest_matrix hotplug ap_config\n"); + return sysfs_emit(buf, "%s\n", FEATURES); } static DEVICE_ATTR_RO(features); -- 2.53.0