Man_Hands reacted to vit9696 in AptioMemoryFix
@apianti, well, obviously, it is not (constantly) in SMM, just constantly busy-loops in 0 ring within SmmCommProtocol->Communicate (you may check its src). Should have been slightly more clear. The functions are pretty much irrelevant, though I am aware of them. Unmapping of UEFI Runtime cannot happen.
For all the others: you have no other choice but AptioMemoryFix + EmuVariableEfi. Other insanity will doom you.