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Wed, 25 Mar 2026 21:01:58 +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 Subject: [PATCH v1 07/24] s390/vfio-ap: Add 'migratable' feature to sysfs 'features' attribute Date: Wed, 25 Mar 2026 17:00:54 -0400 Message-ID: <20260325210149.888028-8-akrowiak@linux.ibm.com> X-Mailer: git-send-email 2.52.0 In-Reply-To: <20260325210149.888028-1-akrowiak@linux.ibm.com> References: <20260325210149.888028-1-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: quoted-printable X-TM-AS-GCONF: 00 X-Proofpoint-ORIG-GUID: iRugTJjjWMLkFvKGujEYGPRZXZtpw-5Z X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwMzI1MDE0OSBTYWx0ZWRfX4QmHo2flNmxO oipIDuVWUBP2rwyFrRXTRwpRvojuf69lhJPH6n7pkbvqejaLMZw3XVg9+BMpKRxt0hMZT17hBAa xy3QuUQf48+at5sAcP+fnNTAXgwPuhXA9srgDhHPaVv7JV8b41hF2K8EaBBTB7crGfI6bzNEz5N INaKorkt/zhsklZ3x0eCQW1OaniaCTIeXLhpL4CrUa4PDX4TNNq0Y3YojAfrXHJXwy+0gjxvlT2 2wetDIRItV3DdvKrslww+XROe1yjDTvhIuQXfgAu53rpApQu5XD7zYI+yyU4SaBiTXYpO76Evdp a7kixYO3up2KE7OncszYsGKk7/DEZGM2aIB2t2xH1W06ghcCwbNZZ2Azz9mRmmPniHo1j0j6ctN rE/JNeNdZRbhCA4NOk614YuDNK2Xky9KvcnOgZhnK5OUeQERRKg+bjaRwRXMFEKuUJ+HHZFgSvl 99XNC2w177KCD8jzu1A== X-Proofpoint-GUID: iRugTJjjWMLkFvKGujEYGPRZXZtpw-5Z X-Authority-Analysis: v=2.4 cv=OsZCCi/t c=1 sm=1 tr=0 ts=69c44d49 cx=c_pps a=bLidbwmWQ0KltjZqbj+ezA==:117 a=bLidbwmWQ0KltjZqbj+ezA==:17 a=Yq5XynenixoA:10 a=VkNPw1HP01LnGYTKEx00:22 a=RnoormkPH1_aCDwRdu11:22 a=U7nrCbtTmkRpXpFmAIza:22 a=VnNF1IyMAAAA:8 a=CB_8iKbeFirw2v3l3xgA:9 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=2026-03-25_05,2026-03-24_01,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 impostorscore=0 adultscore=0 clxscore=1011 phishscore=0 suspectscore=0 lowpriorityscore=0 priorityscore=1501 bulkscore=0 spamscore=0 malwarescore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2603050001 definitions=main-2603250149 Content-Type: text/plain; charset="utf-8" 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_a= p_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; =20 +#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); =20 --=20 2.52.0