[PATCH v2 0/7] s390: vfio-ap: dynamic configuration support

Tony Krowiak
2019-05-03T21:14:26Z

This patch series extends the crypto adapter pass-through support to
provide safeguards against inadvertent sharing of AP resources between
guests and/or the host, and to implement more of the s390 AP
architecture related to provisioning and dynamic configuration of
AP resources.

Change log v2->v3:
-----------------
* Allow guest access to an AP queue only if the queue is bound to
the vfio_ap device driver.

* Removed the patch to test CRYCB masks before taking the vCPUs
out of SIE. Now checking the shadow CRYCB in the vfio_ap driver.

Change log v1->v2:
-----------------
* Removed patches preventing root user from unbinding AP queues from
the vfio_ap device driver
* Introduced a shadow CRYCB in the vfio_ap driver to manage dynamic
changes to the AP guest configuration due to root user interventions
or hardware anomalies.

Tony Krowiak (7):
s390: vfio-ap: wait for queue empty on queue reset
s390: vfio-ap: maintain a shadow of the guest's CRYCB
s390: vfio-ap: sysfs interface to display guest CRYCB
s390: vfio-ap: allow assignment of unavailable AP resources to mdev
device
s390: vfio-ap: allow hot plug/unplug of AP resources using mdev device
s390: vfio-ap: handle bind and unbind of AP queue device
s390: vfio-ap: update documentation

Documentation/s390/vfio-ap.txt | 191 +++++++----
drivers/s390/crypto/vfio_ap_drv.c | 12 +-
drivers/s390/crypto/vfio_ap_ops.c | 612 ++++++++++++++++++++++------------
drivers/s390/crypto/vfio_ap_private.h | 4 +
4 files changed, 536 insertions(+), 283 deletions(-)

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2.7.4