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Tue, 7 Apr 2026 20:51:27 +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 v2 15/16] s390/vfio-ap: Add 'migratable' feature to sysfs 'features' attribute Date: Tue, 7 Apr 2026 16:50:31 -0400 Message-ID: <20260407205100.331150-16-akrowiak@linux.ibm.com> X-Mailer: git-send-email 2.52.0 In-Reply-To: <20260407205100.331150-1-akrowiak@linux.ibm.com> References: <20260407205100.331150-1-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-Details-Enc: AW1haW4tMjYwNDA3MDE4OSBTYWx0ZWRfX1a10af+X+4Zz 69oBgzKHPKjNKC0pwTPqpppwcXkFFzZKsAEiFk+Wk0jpCLTPSxklW/L8JWXKolDy7vJ4SsnYyFl 1WVLVSF3tpFV31gushA4nxUZSWk2nIfJhcXoTmCqPu38h5lFyTUE/U+1R6nkZ479RN1hTly7Cm+ eyZwAdg9EuOXgrhSmtr5MRqt/WulsgLUPJ599b+O/cVDhFwHXqQJhH6iKd7BCOFOErT7Kr56h8V wm0hcUHPHBrV3w50ez6juHfxZj5S73x58IpT48wR7D/M4jc1YvAPWu7AMUsU+JCD72Iu3LIy05W MsYOL67OFRtQX+P+tOw5e+y5b7X0R/uq/xqx12c8ycPNGVxQKWbpfV52Az6cDZXpg0lbGm6mHp2 lhKvzUqcpkbafylS6T8Bj7PTcI5qm9T/M/65aV/vP1MrN5BLX6UElp45a8piZweZAt9io42MT4C LuuUph/Qbk5NEOnkqbQ== X-Authority-Analysis: v=2.4 cv=FsY1OWrq c=1 sm=1 tr=0 ts=69d56e53 cx=c_pps a=AfN7/Ok6k8XGzOShvHwTGQ==:117 a=AfN7/Ok6k8XGzOShvHwTGQ==:17 a=A5OVakUREuEA:10 a=VkNPw1HP01LnGYTKEx00:22 a=RnoormkPH1_aCDwRdu11:22 a=U7nrCbtTmkRpXpFmAIza:22 a=VnNF1IyMAAAA:8 a=CB_8iKbeFirw2v3l3xgA:9 X-Proofpoint-ORIG-GUID: 9D8Dcd4jIrpg6qn0ebo54X35qwP97Ajb X-Proofpoint-GUID: 9D8Dcd4jIrpg6qn0ebo54X35qwP97Ajb X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1143,Hydra:6.1.51,FMLib:17.12.100.49 definitions=2026-04-07_04,2026-04-07_05,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 bulkscore=0 priorityscore=1501 impostorscore=0 spamscore=0 phishscore=0 lowpriorityscore=0 clxscore=1015 adultscore=0 malwarescore=0 suspectscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2604010000 definitions=main-2604070189 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); -- 2.52.0