gEfiMdeModulePkgTokenSpaceGuid.PcdGhcbSize

This dynamic PCD holds the total size of the Guest-Hypervisor Communication Block (GHCB) pool allocation.
The amount of memory allocated for GHCBs is dependent on the number of APs.
GHCB Pool Size

PCD Information

Name	Token Space	Token number	Data Type	Default Value
PcdGhcbSize	gEfiMdeModulePkgTokenSpaceGuid	0x00030008	UINT64	0