gUefiCpuPkgTokenSpaceGuid.PcdCpuSmmApSyncTimeout

Specifies timeout value in microseconds for the BSP in SMM to wait for all APs to come into SMM.
AP synchronization timeout value in SMM.

PCD Information

Name	Token Space	Token number	Data Type	Default Value
PcdCpuSmmApSyncTimeout	gUefiCpuPkgTokenSpaceGuid	0x32132104	UINT64	1000000