[PATCH 0/5] KVM: x86: MMU: Eliminate extra memory slot searches in page fault handlers

[Takuya Yoshikawa]

In page fault handlers, both mapping_level_dirty_bitmap() and mapping_level()
do a memory slot search, binary search, through kvm_vcpu_gfn_to_memslot(), which
may not be negligible especially for virtual machines with many memory slots.

With a bit of cleanup effort, the patch set reduces this overhead.

  [PATCH 1/5] KVM: x86: MMU: Make force_pt_level bool
  [PATCH 2/5] KVM: x86: MMU: Simplify force_pt_level calculation code in FNAME(page_fault)()
  [PATCH 3/5] KVM: x86: MMU: Merge mapping_level_dirty_bitmap() into mapping_level()
  [PATCH 4/5] KVM: x86: MMU: Remove mapping_level_dirty_bitmap()
  [PATCH 5/5] KVM: x86: MMU: Eliminate an extra memory slot search in mapping_level()

	Takuya
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/