gUefiOvmfPkgTokenSpaceGuid.PcdQ35TsegMbytes

The following setting controls how many megabytes we configure as TSEG on
Q35, for SMRAM purposes. Permitted defaults are: 1, 2, 8. Other defaults
cause undefined behavior. During boot, the PCD is updated by PlatformPei
to reflect the extended TSEG size, if one is advertized by QEMU.
This PCD is only accessed if PcdSmmSmramRequire is TRUE (see below).

PCD Information

Name	Token Space	Token number	Data Type	Default Value
PcdQ35TsegMbytes	gUefiOvmfPkgTokenSpaceGuid	0x20	UINT16	8