Merge branch 'linux-4.1/4.4-xen-backport' of git://ca-git.us.oracle.com/linux-joaomar...

Merge branch 'linux-4.1/4.4-xen-backport' of git://ca-git.us.oracle.com/linux-joaomart-public into uek4/4.4-xen-backport

* 'linux-4.1/4.4-xen-backport' of git://ca-git.us.oracle.com/linux-joaomart-public: (113 commits)
  arch/x86/xen/suspend.c: include xen/xen.h
  x86/paravirt: Prevent rtc_cmos platform device init on PV guests
  xen-pciback: fix up cleanup path when alloc fails
  xen/pciback: Don't allow MSI-X ops if PCI_COMMAND_MEMORY is not set.
  xen/pciback: For XEN_PCI_OP_disable_msi[|x] only disable if device has MSI(X) enabled.
  xen/pciback: Do not install an IRQ handler for MSI interrupts.
  xen/pciback: Return error on XEN_PCI_OP_enable_msix when device has MSI or MSI-X enabled
  xen/pciback: Return error on XEN_PCI_OP_enable_msi when device has MSI or MSI-X enabled
  xen/pciback: Save xen_pci_op commands before processing it
  xen-scsiback: safely copy requests
  xen-blkback: read from indirect descriptors only once
  xen-blkback: only read request operation from shared ring once
  xen-netback: use RING_COPY_REQUEST() throughout
  xen-netback: don't use last request to determine minimum Tx credit
  xen: Add RING_COPY_REQUEST()
  xen/x86/pvh: Use HVM's flush_tlb_others op
  xen: Resume PMU from non-atomic context
  xen/events/fifo: Consume unprocessed events when a CPU dies
  xen/evtchn: dynamically grow pending event channel ring
  xen/gntdev: Grant maps should not be subject to NUMA balancing
  ...

Backport from Linux v4.4

OraBug: 23017418 - Backport Linux v4.4 Xen patches

Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>