Tony Krowiak 08f65c9067 s390/vfio-ap: fix sysfs status attribute for AP queue devices ... [ Upstream commit a0d8f4eeb7 ] The 'status' attribute for AP queue devices bound to the vfio_ap device driver displays incorrect status when the mediated device is attached to a guest, but the queue device is not passed through. In the current implementation, the status displayed is 'in_use' which is not correct; it should be 'assigned'. This can happen if one of the queue devices associated with a given adapter is not bound to the vfio_ap device driver. For example: Queues listed in /sys/bus/ap/drivers/vfio_ap: 14.0005 14.0006 14.000d 16.0006 16.000d Queues listed in /sys/devices/vfio_ap/matrix/$UUID/matrix 14.0005 14.0006 14.000d 16.0005 16.0006 16.000d Queues listed in /sys/devices/vfio_ap/matrix/$UUID/guest_matrix 14.0005 14.0006 14.000d The reason no queues for adapter 0x16 are listed in the guest_matrix is because queue 16.0005 is not bound to the vfio_ap device driver, so no queue associated with the adapter is passed through to the guest; therefore, each queue device for adapter 0x16 should display 'assigned' instead of 'in_use', because those queues are not in use by a guest, but only assigned to the mediated device. Let's check the AP configuration for the guest to determine whether a queue device is passed through before displaying a status of 'in_use'. Signed-off-by: Tony Krowiak <akrowiak@linux.ibm.com> Acked-by: Halil Pasic <pasic@linux.ibm.com> Acked-by: Harald Freudenberger <freude@linux.ibm.com> Link: https://lore.kernel.org/r/20231108201135.351419-1-akrowiak@linux.ibm.com Signed-off-by: Alexander Gordeev <agordeev@linux.ibm.com> Signed-off-by: Sasha Levin <sashal@kernel.org>		2024-02-05 20:12:49 +00:00
..
block	s390/scm: fix virtual vs physical address confusion	2024-01-20 11:50:08 +01:00
char	s390/early: fix sclp_early_sccb variable lifetime	2023-03-10 09:32:53 +01:00
cio	s390/cio: fix a memleak in css_alloc_subchannel	2023-10-25 12:03:15 +02:00
crypto	s390/vfio-ap: fix sysfs status attribute for AP queue devices	2024-02-05 20:12:49 +00:00
net	s390/qeth: Don't call dev_close/dev_open (DOWN/UP)	2023-08-11 12:08:17 +02:00
scsi	scsi: zfcp: Fix a double put in zfcp_port_enqueue()	2023-10-10 22:00:38 +02:00
virtio	virtio: Revert "virtio: find_vqs() add arg sizes"	2022-08-16 01:40:24 -04:00
Makefile	…