From: Cornelia Huck <cohuck@redhat.com>
To: Halil Pasic <pasic@linux.ibm.com>,
Eric Farman <farman@linux.ibm.com>,
Farhan Ali <alifm@linux.ibm.com>,
Pierre Morel <pmorel@linux.ibm.com>
Cc: linux-s390@vger.kernel.org, kvm@vger.kernel.org,
Cornelia Huck <cohuck@redhat.com>,
Alex Williamson <alex.williamson@redhat.com>,
qemu-devel@nongnu.org, qemu-s390x@nongnu.org
Subject: [PATCH 0/3] vfio-ccw: support hsch/csch (kernel part)
Date: Thu, 22 Nov 2018 17:54:29 +0100 [thread overview]
Message-ID: <20181122165432.4437-1-cohuck@redhat.com> (raw)
[This is the Linux kernel part, git tree is available at
https://git.kernel.org/pub/scm/linux/kernel/git/kvms390/vfio-ccw.git vfio-ccw-caps
The companion QEMU patches are available at
https://github.com/cohuck/qemu vfio-ccw-caps]
Currently, vfio-ccw only relays START SUBCHANNEL requests to the real
device. This tends to work well for the most common 'good path' scenarios;
however, as we emulate {HALT,CLEAR} SUBCHANNEL in QEMU, things like
clearing pending requests at the device is currently not supported.
This may be a problem for e.g. error recovery.
This patch series introduces capabilities (similar to what vfio-pci uses)
and exposes a new async region for handling hsch/csch.
Very lightly tested (I can interact with a dasd as before; I have not
found a reliable way to trigger hsch/csch in the Linux dasd guest driver.)
Cornelia Huck (3):
vfio-ccw: add capabilities chain
s390/cio: export hsch to modules
vfio-ccw: add handling for asnyc channel instructions
drivers/s390/cio/Makefile | 3 +-
drivers/s390/cio/ioasm.c | 1 +
drivers/s390/cio/vfio_ccw_async.c | 88 +++++++++++++
drivers/s390/cio/vfio_ccw_drv.c | 48 +++++--
drivers/s390/cio/vfio_ccw_fsm.c | 158 +++++++++++++++++++++-
drivers/s390/cio/vfio_ccw_ops.c | 195 ++++++++++++++++++++++++----
drivers/s390/cio/vfio_ccw_private.h | 44 +++++++
include/uapi/linux/vfio.h | 5 +
include/uapi/linux/vfio_ccw.h | 12 ++
9 files changed, 509 insertions(+), 45 deletions(-)
create mode 100644 drivers/s390/cio/vfio_ccw_async.c
--
2.17.2
next reply other threads:[~2018-11-22 16:54 UTC|newest]
Thread overview: 54+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-11-22 16:54 Cornelia Huck [this message]
2018-11-22 16:54 ` [PATCH 1/3] vfio-ccw: add capabilities chain Cornelia Huck
2018-11-23 12:28 ` Pierre Morel
2018-11-23 12:45 ` Cornelia Huck
2018-11-23 13:26 ` Pierre Morel
2018-11-27 19:04 ` Farhan Ali
2018-11-28 9:05 ` Cornelia Huck
2018-12-17 21:53 ` Eric Farman
2018-12-18 17:24 ` Cornelia Huck
2018-12-18 17:56 ` Eric Farman
2018-12-19 16:28 ` Alex Williamson
2018-12-21 11:12 ` Cornelia Huck
2018-11-22 16:54 ` [PATCH 2/3] s390/cio: export hsch to modules Cornelia Huck
2018-11-23 12:30 ` Pierre Morel
2018-11-22 16:54 ` [PATCH 3/3] vfio-ccw: add handling for asnyc channel instructions Cornelia Huck
2018-11-23 13:08 ` Pierre Morel
2018-11-26 9:47 ` Cornelia Huck
2018-11-27 19:09 ` Farhan Ali
2018-11-28 9:02 ` Cornelia Huck
2018-11-28 14:31 ` Farhan Ali
2018-11-28 14:52 ` Cornelia Huck
2018-11-28 15:00 ` Farhan Ali
2018-11-28 15:35 ` Cornelia Huck
2018-11-28 15:55 ` Farhan Ali
2019-01-18 13:53 ` Cornelia Huck
2018-11-27 19:57 ` Farhan Ali
2018-11-28 8:41 ` Cornelia Huck
2018-11-28 16:36 ` [qemu-s390x] " Halil Pasic
2018-11-29 16:52 ` Cornelia Huck
2018-11-29 17:24 ` Halil Pasic
2018-12-17 21:54 ` Eric Farman
2018-12-18 16:45 ` Cornelia Huck
2018-11-24 21:07 ` [qemu-s390x] [PATCH 0/3] vfio-ccw: support hsch/csch (kernel part) Halil Pasic
2018-11-26 9:26 ` Cornelia Huck
2018-11-26 18:57 ` Farhan Ali
2018-11-26 19:00 ` Cornelia Huck
2018-12-04 12:38 ` Halil Pasic
2018-12-04 13:11 ` Cornelia Huck
2018-12-04 15:02 ` Halil Pasic
2018-12-05 12:54 ` Cornelia Huck
2018-12-05 18:34 ` Farhan Ali
2018-12-06 14:39 ` Cornelia Huck
2018-12-06 15:26 ` Farhan Ali
2018-12-06 16:21 ` Cornelia Huck
2018-12-06 17:50 ` Farhan Ali
2018-12-07 9:34 ` Cornelia Huck
2018-12-06 18:47 ` Halil Pasic
2018-12-07 10:05 ` Cornelia Huck
2018-12-07 15:49 ` Halil Pasic
2018-12-07 16:54 ` Halil Pasic
2018-12-19 11:54 ` Cornelia Huck
2018-12-19 14:17 ` Halil Pasic
2018-12-21 11:23 ` Cornelia Huck
2018-12-21 12:42 ` Halil Pasic
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