[SRU trusty] LP#1317697: hyper-v: Unable to dump core for Ubuntu 14.04 virtual machines

[Andy Whitcroft]

We have reports that we are unable to take dumps from hyper-v for 14.04
virtual machines.  This is for lack of a couple fixes:

  commit e179f6914152eca9b338e7d8445684062f560c55
  Author: K. Y. Srinivasan <kys at microsoft.com>
  Date: Mon Apr 14 11:43:49 2014 -0700

    x86, irq, pic: Probe for legacy PIC and set legacy_pic appropriately

  commit 03367ef5ea811475187a0732aada068919e14d61
  Author: K. Y. Srinivasan <kys at microsoft.com>
  Date: Thu Apr 3 18:02:45 2014 -0700

    Drivers: hv: vmbus: Negotiate version 3.0 when running on ws2012r2 hosts

The second of these has now hit our trees via stable.  Following this
email is the first of these.

Proposing for SRU to trusty.

-apw