diff options
| author | Min Xu <min.m.xu@intel.com> | 2021-12-08 20:54:26 +0800 |
|---|---|---|
| committer | mergify[bot] <37929162+mergify[bot]@users.noreply.github.com> | 2022-04-02 08:15:12 +0000 |
| commit | fd306d1dbc36d10f744306e92366d73273c82c8f (patch) | |
| tree | 34344eb075b8a86580503ec0c302fc63cdbe9908 /MdeModulePkg/MdeModulePkg.dec | |
| parent | bec9104201296e4161862a18f0ce3a3d376e68de (diff) | |
| download | edk2-fd306d1dbc36d10f744306e92366d73273c82c8f.tar.gz edk2-fd306d1dbc36d10f744306e92366d73273c82c8f.tar.bz2 edk2-fd306d1dbc36d10f744306e92366d73273c82c8f.zip | |
MdeModulePkg: Add PcdTdxSharedBitMask
RFC: https://bugzilla.tianocore.org/show_bug.cgi?id=3429
Guest Physical Address (GPA) space in Td guest is divided into private
and shared sub-spaces, determined by the SHARED bit of GPA. This PCD
holds the shared bit mask. Its default value is 0 and it will be set
in PlatformPei driver if it is of Td guest.
Cc: Jian J Wang <jian.j.wang@intel.com>
Cc: Hao A Wu <hao.a.wu@intel.com>
Cc: Brijesh Singh <brijesh.singh@amd.com>
Cc: Erdem Aktas <erdemaktas@google.com>
Cc: James Bottomley <jejb@linux.ibm.com>
Cc: Jiewen Yao <jiewen.yao@intel.com>
Cc: Tom Lendacky <thomas.lendacky@amd.com>
Cc: Gerd Hoffmann <kraxel@redhat.com>
Acked-by: Gerd Hoffmann <kraxel@redhat.com>
Reviewed-by: Jian J Wang <jian.j.wang@intel.com>
Reviewed-by: Jiewen Yao <jiewen.yao@intel.com>
Signed-off-by: Min Xu <min.m.xu@intel.com>
Diffstat (limited to 'MdeModulePkg/MdeModulePkg.dec')
| -rw-r--r-- | MdeModulePkg/MdeModulePkg.dec | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/MdeModulePkg/MdeModulePkg.dec b/MdeModulePkg/MdeModulePkg.dec index 40601c9583..cf79292ec8 100644 --- a/MdeModulePkg/MdeModulePkg.dec +++ b/MdeModulePkg/MdeModulePkg.dec @@ -2083,6 +2083,10 @@ # @Prompt Enable PCIe Resizable BAR Capability support.
gEfiMdeModulePkgTokenSpaceGuid.PcdPcieResizableBarSupport|FALSE|BOOLEAN|0x10000024
+ ## This PCD holds the shared bit mask for page table entries when Tdx is enabled.
+ # @Prompt The shared bit mask when Intel Tdx is enabled.
+ gEfiMdeModulePkgTokenSpaceGuid.PcdTdxSharedBitMask|0x0|UINT64|0x10000025
+
[PcdsPatchableInModule]
## Specify memory size with page number for PEI code when
# Loading Module at Fixed Address feature is enabled.
|