[PATCH 0 of 3] RFC Paging support for AMD NPT V2

[Andres Lagar-Cavilla <andres@lagarcavilla.org>]

There has been some progress, but still no joy. Definitely not intended for
inclusion at this point.

Tim, Wei, I added a Xen command line toggle to disable IOMMU and P2M table
sharing.

Tim, I verified that changes to p2m-pt.c don't break shadow mode (64bit
hypervisor and Win 7 guest).

Hongkaixing, I incorporated your suggestion in patch 2, so I should add your
Signed-off-by eventually. Please review.

Olaf, I do not see errors when mapping pages prior to eviction. Let me know how
it goes for you.

If I unleash xenpaging on a domain for a non-ambitious target (64 MiBs paged
out for one minute), we sail by just fine. But if I kick things up a notch,
still dying on an VMEXIT_SHUTDOWN (a.k.a. triple fault). Not sure at all what
to do next. 

Signed-off-by: Andres Lagar-Cavilla <andres@lagarcavilla.org>
Signed-off-by: Adin Scannell <adin@scannell.ca>

 xen/drivers/passthrough/iommu.c |   2 +
 xen/arch/x86/mm/p2m-pt.c        |  56 ++++++++++++++++++++++++++++------------
 xen/arch/x86/mm/mem_event.c     |   7 +++-
 xen/arch/x86/mm/mem_sharing.c   |   7 +++++
 4 files changed, 53 insertions(+), 19 deletions(-)