RFC fio-ccw fixes for kernel stacktraces
Get series with b4
b4 am [email protected]Versions newest first · linked by author and title
- v2 RFC Latest3 patches 16 repliesIn review
- v1 RFC1 of 3 patches 0 repliesSuperseded
Changes in v2 from the cover letter
- Use the return code from cio_cancel_halt_clear to prevent waiting unnecessarily (patch 2).
- No need to reset the device on the remove path (patch 3).
Patches in v2 No applies recorded yet
| # | Subject and files | Size | Replies | Applied |
|---|---|---|---|---|
| 1/3 | vfio-ccw: Do not call flush_workqueue while holding the spinlockdrivers/ | +1 | 0 replies | |
| 2/3 | vfio-ccw: Prevent quiesce function going into an infinite loopdrivers/ | +12 | 9 replies | |
| 3/3 | vfio-ccw: Release any channel program when releasing/removing vfio-ccw mdevdrivers/ | +10 | 6 replies |
Reviews trailers per patch
2 of 3 patches have a Reviewed-by or Acked-by.
| Patch | Eric Farman | Pierre Morel |
|---|---|---|
| 1/3 | R-b | R-b |
| 2/3 | ||
| 3/3 | A-b |
Trailers given in replies are filled; those carried in the patches from earlier versions are outlined with dashes.
Cover letter [RFC v2 0/3] fio-ccw fixes for kernel stacktraces
Hi,
I have recently seen some interesting kernel stacktraces while testing vfio-ccw mediated devices. These stack traces are seen when things don't go right, for example when a guest crashes or dies while still doing some I/O on the mediated device.
I have also come across an issue in the common vfio code as
well which I reported upstream (https://marc.info/?l=kvm&m=155369393523503&w=2)
and submitted a patch separately for it
(https://marc.info/?l=kvm&m=155414703613868&w=2).
I would appreciate any review or feedback on these patches.
Thanks
Farhan
ChangeLog
---------
v1 -> v2
- Use the return code from cio_cancel_halt_clear to prevent waiting unnecessarily (patch 2).
- No need to reset the device on the remove path (patch 3).
Farhan Ali (3):
vfio-ccw: Do not call flush_workqueue while holding the spinlock
vfio-ccw: Prevent quiesce function going into an infinite loop
vfio-ccw: Release any channel program when releasing/removing vfio-ccw
mdev
drivers/s390/cio/vfio_ccw_drv.c | 27 ++++++++++++--------------- drivers/s390/cio/vfio_ccw_ops.c | 11 ++++++++++- 2 files changed, 22 insertions(+), 16 deletions(-)
Signature · 1 line
2.7.4