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[PATCH v2 0/3] xen: remove some checks for always present Xen features

Some features of Xen can be assumed to be always present, so add a
central check to verify this being true and remove the other checks.

Juergen Gross (3):
  xen: check required Xen features
  xen: assume XENFEAT_mmu_pt_update_preserve_ad being set for pv guests
  xen: assume XENFEAT_gnttab_map_avail_bits being set for pv guests

 arch/x86/xen/enlighten_pv.c | 12 ++----------
 arch/x86/xen/mmu_pv.c       |  4 ++--
 drivers/xen/features.c      | 18 ++++++++++++++++++
 drivers/xen/gntdev.c        | 36 ++----------------------------------
 4 files changed, 24 insertions(+), 46 deletions(-)




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