KVM: x86: design documentation on TDX support of x86 KVM TDP MMU

Add a high level design document on TDX changes to TDP MMU.

Signed-off-by: Isaku Yamahata <isaku.yamahata@intel.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Message-Id: <8dec2b13f0099495993e0fd6142cfceb4d37ba7e.1646422845.git.isaku.yamahata@intel.com>
1 file changed