[RFC PATCH 0/4] Add support for EPT execute only for nested hypervisors

[Bandan Das <bsd@redhat.com>]

I spoke to Paolo about this a while back and thought to post this as
RFC while I am thinking of adding some unit tests.

Background: ESX refuses to run as L1 if support for EPT execute only isn't
found. I am not really sure if it uses it for anything since just advertising
the bits seems to work but adding the necessary plumbing seemed like a good idea.

Xiao, I took the liberty of adding you based on "git blame" :)

Thanks in advance.

Bandan Das (4):
  mmu: add a boolean to indicate host ept execute only support
  mmu: Update ept specific valid bit values
  mmu: don't set the present bit unconditionally
  vmx: advertise support for ept execute only

 arch/x86/include/asm/kvm_host.h |  2 +-
 arch/x86/kvm/mmu.c              | 22 +++++++++++++++++-----
 arch/x86/kvm/paging_tmpl.h      |  9 +++++++--
 arch/x86/kvm/vmx.c              |  5 ++++-
 arch/x86/kvm/x86.c              |  2 +-
 5 files changed, 30 insertions(+), 10 deletions(-)

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2.5.5