s390: vfio-ap: sysfs interface to view matrix mdev matrix
authorTony Krowiak <akrowiak@linux.ibm.com>
Tue, 25 Sep 2018 23:16:24 +0000 (19:16 -0400)
committerChristian Borntraeger <borntraeger@de.ibm.com>
Wed, 26 Sep 2018 19:02:59 +0000 (21:02 +0200)
commit81b2b4b76a733ee479af359db59e1c91e3aad4cd
treebefbae4af15e3ba3d64c03a1679d7d4d0d4c2e67
parent3b1eab7fb9da69c9af129058ed5aebb93d40d623
s390: vfio-ap: sysfs interface to view matrix mdev matrix

Provides a sysfs interface to view the AP matrix configured for the
mediated matrix device.

The relevant sysfs structures are:

/sys/devices/vfio_ap/matrix/
...... [mdev_supported_types]
......... [vfio_ap-passthrough]
............ [devices]
...............[$uuid]
.................. matrix

To view the matrix configured for the mediated matrix device,
print the matrix file:

cat matrix

Below are examples of the output from the above command:

Example 1: Adapters and domains assigned
Assignments:
Adapters 5 and 6
Domains 4 and 71 (0x47)

Output
05.0004
05.0047
06.0004
06.0047

Examples 2: Only adapters assigned
Assignments:
Adapters 5 and 6

Output:
05.
06.

Examples 3: Only domains assigned
Assignments:
Domains 4 and 71 (0x47)

Output:
.0004
.0047

Signed-off-by: Tony Krowiak <akrowiak@linux.ibm.com>
Reviewed-by: Halil Pasic <pasic@linux.ibm.com>
Reviewed-by: Cornelia Huck <cohuck@redhat.com>
Tested-by: Michael Mueller <mimu@linux.ibm.com>
Tested-by: Farhan Ali <alifm@linux.ibm.com>
Tested-by: Pierre Morel <pmorel@linux.ibm.com>
Message-Id: <20180925231641.4954-10-akrowiak@linux.vnet.ibm.com>
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
drivers/s390/crypto/vfio_ap_ops.c