3 ms·

I think they said it was gone so they could keep the software simpler i.e. switching a process from a big to little core could require a fair amount of logic if

by mhh__ 5y ago

I think they said it was gone so they could keep the software simpler i.e. switching a process from a big to little core could require a fair amount of logic if they have completely different instruction sets. It's also possible it's buggy.

rbanffy 5y ago
If they had completely different instruction sets, this wouldn't be feasible. The OS would need to be aware of that and move tasks between cores with a compatible ISA. A possible workaround would be to use the invalid instruction fault to look for a core that implements that instruction. That, however, wouldn't work if they were completely different, as in a couple GreenArray cores and a couple x86 ones.