linux-kernel - [PATCH v2 0/5] s390/vfio-ap: queue_configuration sysfs attribute for mdevctl automation

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Message-ID: <20240306140843.10782-1-jjherne@linux.ibm.com>
Date: Wed,  6 Mar 2024 09:08:38 -0500
From: "Jason J. Herne" <jjherne@...ux.ibm.com>
To: linux-s390@...r.kernel.org
Cc: linux-kernel@...r.kernel.org, pasic@...ux.ibm.com, akrowiak@...ux.ibm.com,
        borntraeger@...ibm.com, agordeev@...ux.ibm.com, gor@...ux.ibm.com
Subject: [PATCH v2 0/5] s390/vfio-ap: queue_configuration sysfs attribute for mdevctl automation

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