KVM support for 1GB pages v2

Hi,

this is the second version of the patches implementing support for 1GB
pages in KVM. There are too many changes to the first version to mention
them all here. The core support was rewritten to work with mapping
levels instead of page sizes. This was the main part of the change.
The patches still only support KVM with nested paging enabled.
All patches apply to avi/master and can be pulled from

	git://git.kernel.org/pub/scm/linux/kernel/git/joro/linux-2.6-kvm.git kvm-gb-pages

Here is the complete diffstat:

 arch/ia64/include/asm/kvm_host.h    |    3 +-
 arch/powerpc/include/asm/kvm_host.h |    3 +-
 arch/x86/include/asm/kvm_host.h     |   16 ++-
 arch/x86/kvm/mmu.c                  |  213 +++++++++++++++++++++-------------
 arch/x86/kvm/paging_tmpl.h          |   11 +-
 arch/x86/kvm/svm.c                  |    7 +
 arch/x86/kvm/vmx.c                  |    7 +
 arch/x86/kvm/x86.c                  |    6 +-
 include/linux/kvm.h                 |    1 +
 include/linux/kvm_host.h            |    2 +-
 mm/hugetlb.c                        |    1 +
 virt/kvm/kvm_main.c                 |   46 +++++---
 12 files changed, 204 insertions(+), 112 deletions(-)

Please give these patches a good review :)

Thanks,

	Joerg


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