Merge tag 'uek2-merge-backport-3.7' of git://ca-git/linux-konrad-public into uek2...

Merge tag 'uek2-merge-backport-3.7' of git://ca-git/linux-konrad-public into uek2-merge-400

Backport from v3.7

We are back-porting:
 - the Xen pcifront auto-enabling of SWIOTLB
 - Xen ARM (lays the foundation for the PVH work - as they
   share similar code)
 - self-ballooning fixes (they are actually v3.6 and earlier material)
 - fixes to the frontend drivers
 - fixes to do kexec in PVonHVM.
 - EHCI/Xen driver (Xen 4.2 support to use DBGP as console)

* tag 'uek2-merge-backport-3.7' of git://ca-git/linux-konrad-public: (109 commits)
  Revert "xen/x86: Workaround 64-bit hypervisor and 32-bit initial domain." and "xen/x86: Use memblock_reserve for sensitive areas."
  xen/x86: Workaround 64-bit hypervisor and 32-bit initial domain.
  xen/arm: Fix compile errors when drivers are compiled as modules (export more).
  xen/arm: Fix compile errors when drivers are compiled as modules.
  xen/generic: Disable fallback build on ARM.
  xen/hvm: If we fail to fetch an HVM parameter print out which flag it is.
  xen/hypercall: fix hypercall fallback code for very old hypervisors
  xen/arm: use the __HVC macro
  xen/xenbus: fix overflow check in xenbus_file_write()
  xen-kbdfront: handle backend CLOSED without CLOSING
  xen-fbfront: handle backend CLOSED without CLOSING
  xen/gntdev: don't leak memory from IOCTL_GNTDEV_MAP_GRANT_REF
  x86: remove obsolete comment from asm/xen/hypervisor.h
  xen: dbgp: Fix warning when CONFIG_PCI is not enabled.
  USB EHCI/Xen: propagate controller reset information to hypervisor
  xen: arm: comment on why 64-bit xen_pfn_t is safe even on 32 bit
  xen: balloon: use correct type for frame_list
  xen/x86: don't corrupt %eip when returning from a signal handler
  xen: arm: make p2m operations NOPs
  xen: balloon: don't include e820.h
  ...

Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Conflicts:
	arch/x86/xen/mmu.c
	drivers/xen/xenbus/xenbus_xs.c