From: "Jason J. Herne" <jjherne@linux.ibm.com>
To: linux-s390@vger.kernel.org
Cc: linux-kernel@vger.kernel.org, pasic@linux.ibm.com,
akrowiak@linux.ibm.com, borntraeger@de.ibm.com,
agordeev@linux.ibm.com, gor@linux.ibm.com
Subject: [PATCH v3 0/5] s390/vfio-ap: ap_config sysfs attribute for mdevctl automation
Date: Wed, 13 Mar 2024 16:58:02 -0400 [thread overview]
Message-ID: <20240313205807.30554-1-jjherne@linux.ibm.com> (raw)
Mdevctl requires a way to atomically query and atomically update a vfio-ap
mdev's current state. This patch set creates the ap_config 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
==========
v3
- Optimization: hot unplug functions skip apcb update if nothing was actually
unplugged.
- Hot unplug functions modified to zero bitmaps before use.
- Rename ap_matrix_length_check to ap_matrix_overflow_check
- Fixed omissions and errors in several commit messages and the docs.
- Added Tested-by tags.
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, ap_config, 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
docs: Update s390 vfio-ap doc for ap_config sysfs attribute
Documentation/arch/s390/vfio-ap.rst | 30 ++++
drivers/s390/crypto/ap_bus.c | 13 +-
drivers/s390/crypto/ap_bus.h | 22 +++
drivers/s390/crypto/vfio_ap_ops.c | 220 ++++++++++++++++++++++++--
drivers/s390/crypto/vfio_ap_private.h | 6 +-
5 files changed, 262 insertions(+), 29 deletions(-)
--
2.41.0
next reply other threads:[~2024-03-13 20:58 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-03-13 20:58 Jason J. Herne [this message]
2024-03-13 20:58 ` [PATCH v3 1/5] s390/ap: Externalize AP bus specific bitmap reading function Jason J. Herne
2024-03-13 20:58 ` [PATCH v3 2/5] s390/vfio-ap: Add sysfs attr, ap_config, to export mdev state Jason J. Herne
2024-03-13 20:58 ` [PATCH v3 3/5] s390/vfio-ap: Ignore duplicate link requests in vfio_ap_mdev_link_queue Jason J. Herne
2024-03-13 20:58 ` [PATCH v3 4/5] s390/vfio-ap: Add write support to sysfs attr ap_config Jason J. Herne
2024-03-15 14:45 ` Anthony Krowiak
2024-03-13 20:58 ` [PATCH v3 5/5] docs: Update s390 vfio-ap doc for ap_config sysfs attribute Jason J. Herne
2024-03-15 14:46 ` Anthony Krowiak
2024-03-15 14:48 ` [PATCH v3 0/5] s390/vfio-ap: ap_config sysfs attribute for mdevctl automation Anthony Krowiak
2024-03-19 11:12 ` Heiko Carstens
2024-03-21 14:14 ` Jason J. Herne
2024-03-21 14:41 ` Heiko Carstens
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