Mdevctl requires a way to atomically query and atomically update a vfio-ap
mdev's current state. This patch set creates the queue_configuration sysfs
attribute. This new attribute allows reading and writing an mdev's entire
state in one go. If a newly written state is invalid for any reason the entire
state is rejected and the target mdev remains unchanged.
Changelog
==========
v2
- Rebased patched on top of latest master
- Reworked code to fit changes introduced by f848cba767e59
s390/vfio-ap: reset queues filtered from the guest's AP config
- Moved docs changes to separate patch
Jason J. Herne (5):
s390/ap: Externalize AP bus specific bitmap reading function
s390/vfio-ap: Add sysfs attr, queue_configuration, to export mdev
state
s390/vfio-ap: Ignore duplicate link requests in
vfio_ap_mdev_link_queue
s390/vfio-ap: Add write support to sysfs attr ap_config
s390: doc: Update doc
Documentation/arch/s390/vfio-ap.rst | 27 ++++
drivers/s390/crypto/ap_bus.c | 13 +-
drivers/s390/crypto/ap_bus.h | 22 +++
drivers/s390/crypto/vfio_ap_ops.c | 206 ++++++++++++++++++++++++--
drivers/s390/crypto/vfio_ap_private.h | 6 +-
5 files changed, 245 insertions(+), 29 deletions(-)
--
2.41.0
