* Each custom-defined bit of the MISA-like CSR would (mutually-exclusively)
redirect binary encoding(s) to specific encodings
* No Extension would *actually* be disabled: its internal state would
- be left on (permanently) so that switching could be done inside
- inner loops.
+ be left on (permanently) so that switching of ISA decoding
+ could be done inside inner loops without adverse impact on
+ performance.
Whilst it was the first "workable" solution it was also noted that the
-scheme is quite invasive: it requires an entirely new CSR to be added
-to the privileged spec. This does not completely fulfil the "minimum
-impact" requirement.
+scheme is invasive: it requires an entirely new CSR to be added
+to the privileged spec (thus making existing implementations redundant).
+This does not completely fulfil the "minimum impact" requirement.
Also interesting around the same time an additional discussion was
raised that covered the *compiler* side of the same equation. This