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Tue, 30 Jun 2026 10:41:49 +0000 (GMT) Received: from li-4c4c4544-004d-4810-8043-b7c04f423534.ibm.com.com (unknown [9.61.135.84]) by smtpav05.dal12v.mail.ibm.com (Postfix) with ESMTP; Tue, 30 Jun 2026 10:41:48 +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 v3 14/15] s390/vfio-ap: Add 'migratable' feature to sysfs 'features' attribute Date: Tue, 30 Jun 2026 06:41:24 -0400 Message-ID: <20260630104132.1598851-15-akrowiak@linux.ibm.com> X-Mailer: git-send-email 2.53.0 In-Reply-To: <20260630104132.1598851-1-akrowiak@linux.ibm.com> References: <20260630104132.1598851-1-akrowiak@linux.ibm.com> Precedence: bulk X-Mailing-List: linux-kernel@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-Details-Enc: AW1haW4tMjYwNjMwMDA5MyBTYWx0ZWRfX5eBCeoDrfhlD FWYNjwDJQK5qo8+zSE+jwI8+L8gMfDG+6GjkCueb+fPFiILYhz8Sf6tQYdHHyXbag7smYyDvL9L 3/Tkll+lRfD8AoNeKWeAQU0K44BobdYfHPMKPgHxjwWJrOEm4FG0m/onClDebkonJlRrgpQELFl Fyigt2xrMgoNSylh0Xtn6KL2sX/ROQpYeLcgeEhBmA4opdNoOoqUHHl43TYM2UyoYmLA2zEYiNr qK+Hx+EWwTPee2WiZrJcn++eHKNIrmCWbefDooEhabys4mqKgh0CbdsTZRddnNom7cx9BJ0nVqy lO/uTqqisLje2as6AAHyLmfxp46MCNwERm42LiC0tApvNQqMqJZIq5CgRB3JpOCxev1z8IiuEe3 QHxewSjIgk4+yUqJkRp4KRDt+7Srhh/5WhjKJOFZRce8mdAL7j0N+a+FsDb8UEPc3QaQ5TXXamx TU81/arUQ/WHAABBmEA== X-Authority-Analysis: v=2.4 cv=V45NF+ni c=1 sm=1 tr=0 ts=6a439d70 cx=c_pps a=3Bg1Hr4SwmMryq2xdFQyZA==:117 a=3Bg1Hr4SwmMryq2xdFQyZA==:17 a=FelO9ux0wxsA:10 a=VkNPw1HP01LnGYTKEx00:22 a=RnoormkPH1_aCDwRdu11:22 a=U7nrCbtTmkRpXpFmAIza:22 a=VnNF1IyMAAAA:8 a=CB_8iKbeFirw2v3l3xgA:9 X-Proofpoint-ORIG-GUID: blyXOJXbtxuAdQBQLhuT2V3EEtBvcadQ X-Proofpoint-GUID: blyXOJXbtxuAdQBQLhuT2V3EEtBvcadQ X-Proofpoint-Spam-Info: AW1haW4tMjYwNjMwMDA5MyBTYWx0ZWRfX/N4KWNNHSi1Z I01icj7vCeYl1+zu2NU3pxh1PWgLh57r23/TRB6hkNTSYyVFVVLLnOhMGWtgweFx3z2FbD2mfGn DFPfIfUEPFKRk6ZGhqzKT5CUu1qQcSI= X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1143,Hydra:6.1.125,FMLib:17.12.100.49 definitions=2026-06-30_03,2026-06-26_01,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 phishscore=0 spamscore=0 suspectscore=0 lowpriorityscore=0 priorityscore=1501 adultscore=0 clxscore=1015 impostorscore=0 malwarescore=0 bulkscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2606150000 definitions=main-2606300093 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