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

Message

Anthony Krowiak May 3, 2019, 9:14 p.m. UTC

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(-)