No, this FC is kind of license. There is no hardware behind and definitely no change in integrated circuits like CPU. And it would be wise to enable such "deep DAT" for z/VM world as well. But there is no such feature.

BTW: there are several FC features which are enablements of some software/microcode. Examples: STP, 3215 ICC console, etc.

--
Radoslaw Skorupka
Lodz, Poland







W dniu 26.08.2020 o 20:37, Mauri Kanter pisze:
I guess the same than you and for the same reasons, but I have no proof of it 
... The only thing why I doubt about it is that I do not know why zCX needs 
FC-0104  ? Does FC-0104 changes something hardware-wise?


My guess is NO.
Reason: the same as with z/VM. Multi-level z/VM causes DAT to be not
used on last level guest. There is no reason to assume zLinux container
would break this limitation.
My €0.02.

--
Radoslaw Skorupka
Lodz, Poland



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