[SRU][Utopic][Vivid][PATCH 0/2][Hyper-V] LP:#1463584 Add support for VMBus panic notifier handler

[Joseph Salisbury]

BugLink: http://bugs.launchpad.net/bugs/1463584

== Utopic and Vivid SRU Justification ==
These patches are specific to the Hyper-V VMBus driver to enable kernel crash notifications.

In the event of a kernel panic, VMBus driver supports sending five 64-bit values
 to be recorded in the log. On Hyper-V this is recorded in the event log, and on
 Azure we can use this data to better detect failures like this in the guest VM
 and surface that as part of our diagnostics information.

Commit 5ef5b69 is a clean cherry pick.  However, commit 96c1d05 requeired a backport.  
These patches are also needed in Trusty, but the backport for 96c1d05 was different
becuase there are two spaces after '#include "hyperv_vmbus.h"' in Trusty, where Utopic and 
Vivid only had once space.  I'll send a seperate SRU request for Trusty.  
Wily will get these patches when it is rebased to v4.1 final.  

These commits will also be requested in upstream stable. 

== Fixes ==
commit 96c1d0581d00f7abe033350edb021a9d947d8d81
Author: Nick Meier <nmeier at microsoft.com>
Date:   Sat Feb 28 11:39:01 2015 -0800

    Drivers: hv: vmbus: Add support for VMBus panic notifier handler

commit 5ef5b6927f14f29cacd78fa1fb861661a5367f13
Author: Nick Meier <nmeier at microsoft.com>
Date:   Wed Mar 18 12:29:24 2015 -0700

    Drivers: hv: vmbus: Correcting truncation error for constant HV_CRASH_CTL_CRASH_NOTIFY



== Test Case ==

A test kernel was built with these patches and tested by the original bug reporter.
The bug reporter states the test kernel resolved the bug.

Nick Meier (2):
  Drivers: hv: vmbus: Add support for VMBus panic notifier handler
  Drivers: hv: vmbus: Correcting truncation error for constant
    HV_CRASH_CTL_CRASH_NOTIFY

 drivers/hv/hyperv_vmbus.h | 11 +++++++++++
 drivers/hv/vmbus_drv.c    | 35 +++++++++++++++++++++++++++++++++++
 2 files changed, 46 insertions(+)

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2.1.0