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Author SHA1 Message Date
Ray Ni f336e30ba1 UefiCpuPkg/CpuPageTableLib: Return error on invalid parameters 
When LinearAddress or Length is not aligned on 4KB, PageTableMap()
should return Invalid Parameter.

Signed-off-by: Zhiguang Liu <zhiguang.liu@intel.com>
Reviewed-by: Ray Ni <ray.ni@intel.com>
Reviewed-by: Eric Dong <eric.dong@intel.com>
 2022-08-09 07:08:05 +00:00
Ray Ni 75e3c2435c UefiCpuPkg: Create CpuPageTableLib for manipulating X86 paging structs 
The lib includes two APIs:
* PageTableMap
  It creates/updates mapping from LA to PA.
  The implementation only supports paging structures used in 64bit
  mode now. PAE paging structure support will be added in future.

* PageTableParse
   It parses the page table and returns the mapping relations in an
  array of IA32_MAP_ENTRY.

It passed some stress tests. These test code will be upstreamed in
other patches following edk2 Unit Test framework.

Signed-off-by: Ray Ni <ray.ni@intel.com>
Reviewed-by: Eric Dong <eric.dong@intel.com>
 2022-08-09 07:08:05 +00:00