[Xen-devel] [PATCH V3 0/2] xenbus: Fix S3 frontend resume when xenstored is not running

[Aurelien Chartier <aurelien.chartier@xxxxxxxxxx>]

Hi,

This patch series fixes the S3 resume of a domain running xenstored and a
frontend over xenbus (xen-netfront in my use case).

As device resume is happening before process resume, the xenbus frontend
resume is hanging if xenstored is not running, thus causing a deadlock.
This patch series is fixing that issue by deferring the xenbus frontend
resume when we are running xenstored in that same domain.

Changes in v2:
- Instead of bypassing the resume, process it in a workqueue.
Changes in v3:
- Add a struct work in xenbus_device to avoid dynamic allocation
- Use Linux global workqueue
- Several small code fixes

Aurelien Chartier (2):
  xenbus: save xenstore local status for later use
  xenbus: delay xenbus frontend resume is xenstored is not running

 drivers/xen/xenbus/xenbus_comms.h          |    1 +
 drivers/xen/xenbus/xenbus_probe.c          |   27 ++++++++++++---------------
 drivers/xen/xenbus/xenbus_probe.h          |    7 +++++++
 drivers/xen/xenbus/xenbus_probe_frontend.c |   26 +++++++++++++++++++++++++-
 include/xen/xenbus.h                       |    1 +
 5 files changed, 46 insertions(+), 16 deletions(-)

-- 
1.7.10.4


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