5-level paging is documented in white paper:
https://software.intel.com/sites/default/files/managed/2b/80/5-level_paging_white_paper.pdf
Commit f8113e2500
changed Cpuid.h already.
This patch updates IA32_CR4 structure to include LA57 field.
Signed-off-by: Ray Ni <ray.ni@intel.com>
Cc: Eric Dong <eric.dong@intel.com>
Regression-tested-by: Laszlo Ersek <lersek@redhat.com>
Reviewed-by: Eric Dong <eric.dong@intel.com>
Reviewed-by: Michael D Kinney <michael.d.kinney@intel.com>
(cherry picked from commit 7c5010c7f8)