diff options
| author | Brijesh Singh via groups.io <brijesh.singh=amd.com@groups.io> | 2021-12-09 11:27:51 +0800 |
|---|---|---|
| committer | mergify[bot] <37929162+mergify[bot]@users.noreply.github.com> | 2021-12-09 06:28:10 +0000 |
| commit | f4e3ce5f532860bbcf3a78d38f699dfbff0e1e75 (patch) | |
| tree | aad6445d7fb25c573c1aa4005930181236b91850 | |
| parent | b95908e04317a2b1e3641845ba36f673d5aebada (diff) | |
| download | edk2-f4e3ce5f532860bbcf3a78d38f699dfbff0e1e75.tar.gz edk2-f4e3ce5f532860bbcf3a78d38f699dfbff0e1e75.tar.bz2 edk2-f4e3ce5f532860bbcf3a78d38f699dfbff0e1e75.zip | |
UefiCpuPkg: add PcdGhcbHypervisorFeatures
BZ: https://bugzilla.tianocore.org/show_bug.cgi?id=3275
Version 2 of the GHCB specification added a new VMGEXIT that the guest
could use for querying the hypervisor features. One of the immediate
users for it will be an AP creation code. When SEV-SNP is enabled, the
guest can use the newly added AP_CREATE VMGEXIT to create the APs.
The MpInitLib will check the hypervisor feature, and if AP_CREATE is
available, it will use it.
See GHCB spec version 2 for more details on the VMGEXIT.
Cc: Michael Roth <michael.roth@amd.com>
Cc: Ray Ni <ray.ni@intel.com>
Cc: Rahul Kumar <rahul1.kumar@intel.com>
Cc: Eric Dong <eric.dong@intel.com>
Cc: James Bottomley <jejb@linux.ibm.com>
Cc: Min Xu <min.m.xu@intel.com>
Cc: Jiewen Yao <jiewen.yao@intel.com>
Cc: Tom Lendacky <thomas.lendacky@amd.com>
Cc: Jordan Justen <jordan.l.justen@intel.com>
Cc: Ard Biesheuvel <ardb+tianocore@kernel.org>
Cc: Erdem Aktas <erdemaktas@google.com>
Cc: Gerd Hoffmann <kraxel@redhat.com>
Acked-by: Ray Ni <ray.ni@Intel.com>
Acked-by: Gerd Hoffmann <kraxel@redhat.com>
Signed-off-by: Brijesh Singh <brijesh.singh@amd.com>
| -rw-r--r-- | UefiCpuPkg/UefiCpuPkg.dec | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/UefiCpuPkg/UefiCpuPkg.dec b/UefiCpuPkg/UefiCpuPkg.dec index 62acb291f3..7de66fde67 100644 --- a/UefiCpuPkg/UefiCpuPkg.dec +++ b/UefiCpuPkg/UefiCpuPkg.dec @@ -396,5 +396,10 @@ # @Prompt SEV-ES Status
gUefiCpuPkgTokenSpaceGuid.PcdSevEsIsEnabled|FALSE|BOOLEAN|0x60000016
+ ## This dynamic PCD contains the hypervisor features value obtained through the GHCB HYPERVISOR
+ # features VMGEXIT defined in the version 2 of GHCB spec.
+ # @Prompt GHCB Hypervisor Features
+ gUefiCpuPkgTokenSpaceGuid.PcdGhcbHypervisorFeatures|0x0|UINT64|0x60000018
+
[UserExtensions.TianoCore."ExtraFiles"]
UefiCpuPkgExtra.uni
|