sravan/system76-edk2
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

UefiCpuPkg: Create CpuPageTableLib for manipulating X86 paging structs

Browse Source 
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>
This commit is contained in:
Ray Ni
2022-07-14 14:33:18 +08:00
committed by mergify[bot]
parent f1688ec9da
commit 75e3c2435c
7 changed files with 1247 additions and 1 deletions
Download Patch File Download Diff File Expand all files Collapse all files

3
UefiCpuPkg/UefiCpuPkg.dec
View File

@@ -62,6 +62,9 @@
## @libraryclass Provides function for loading microcode.
MicrocodeLib|Include/Library/MicrocodeLib.h
## @libraryclass Provides function for manipulating x86 paging structures.
CpuPageTableLib|Include/Library/CpuPageTableLib.h
[Guids]
gUefiCpuPkgTokenSpaceGuid = { 0xac05bf33, 0x995a, 0x4ed4, { 0xaa, 0xb8, 0xef, 0x7a, 0xe8, 0xf, 0x5c, 0xb0 }}
gMsegSmramGuid = { 0x5802bce4, 0xeeee, 0x4e33, { 0xa1, 0x30, 0xeb, 0xad, 0x27, 0xf0, 0xe4, 0x39 }}