[GIT PULL] xen: bug fixes for 3.18-rc1

[David Vrabel <dvrabel@cantab.net>]

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Linus,

Please git pull the following tag:

 git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip.git stable/for-linus-3.18-b-rc1-tag

xen: bug fixes for 3.18-rc1

- - Fix regression in xen_clocksource_read() which caused all Xen guests
  to crash early in boot.
- - Several fixes for super rare race conditions in the p2m.
- - Assorted other minor fixes.

Thanks.

David

 arch/x86/xen/enlighten.c |    3 --
 arch/x86/xen/mmu.c       |    5 ++-
 arch/x86/xen/p2m.c       |   83 ++++++++++++++--------------------------------
 arch/x86/xen/setup.c     |    1 +
 arch/x86/xen/time.c      |    2 +-
 drivers/xen/balloon.c    |    3 ++
 drivers/xen/pci.c        |   27 +++++++++------
 7 files changed, 50 insertions(+), 74 deletions(-)

Boris Ostrovsky (3):
      xen/balloon: Don't continue ballooning when BP_ECANCELED is encountered
      x86/xen: Fix incorrect per_cpu accessor in xen_clocksource_read()
      xen/pci: Allocate memory for physdev_pci_device_add's optarr

Juergen Gross (3):
      x86/xen: avoid writing to freed memory after race in p2m handling
      x86/xen: delay construction of mfn_list_list
      x86/xen: avoid race in p2m handling

Martin Kelly (1):
      x86/xen: panic on bad Xen-provided memory map
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