[PATCH v4 0/4] vfio: ccw: error handling fixes and improvements

Dong Jia Shi
2018-05-23T02:56:41Z

Dear Reviewers,

Here is a new version for this patch series.

We didn't get agreement on patch #4 (#5 in v2) in the former cycle though,
I made it based on my understanding. We can continue discussing on it.

Changelog:
v3->v4:
- Change mail address from @linux.vnet.ibm.com to @linux.ibm.com

v2->v3:
- #2. Reworded comment message.
- #4. Trace failure only, trace all error path, and a common knob for all
failure paths.

v1->v2:
- #1. Reworded commit message and comment, plus some typo fixes.
- #2. New patch.
- #3. Added the missing suggested-by Pierre.
Fixed typos.
Added sanity check on pa->pa_iova_pfn and updated comments accordingly.
- #4. Removed unused idaw_nr.
- #5. Replaced leading white spaces with TABs.
Traced the function in anycase.

Dong Jia Shi (3):
vfio: ccw: shorten kernel doc description for pfn_array_pin()
vfio: ccw: refactor and improve pfn_array_alloc_pin()
vfio: ccw: set ccw->cda to NULL defensively

Halil Pasic (1):
vfio: ccw: add traceponits for interesting error paths

drivers/s390/cio/Makefile | 1 +
drivers/s390/cio/vfio_ccw_cp.c | 121 +++++++++++++++++++-------------------
drivers/s390/cio/vfio_ccw_fsm.c | 17 +++++-
drivers/s390/cio/vfio_ccw_trace.h | 54 +++++++++++++++++
4 files changed, 130 insertions(+), 63 deletions(-)
create mode 100644 drivers/s390/cio/vfio_ccw_trace.h

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2.16.3