Merge tag 'stable/for-linus-4.0-rc3-tag' of git://git.kernel.org/pub/scm/linux/kernel...

Pull xen bug fixes from David Vrabel:

 - fix a PV regression in 3.19.

 - fix a dom0 crash on hosts with large numbers of PIRQs.

 - prevent pcifront from disabling memory or I/O port access, which may
   trigger host crashes.

* tag 'stable/for-linus-4.0-rc3-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip:
  xen-pciback: limit guest control of command register
  xen/events: avoid NULL pointer dereference in dom0 on large machines
  xen: Remove trailing semicolon from xenbus_register_frontend() definition
  x86/xen: correct bug in p2m list initialization