Ambiguous wording for sstatus.CRG
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tomaird commented
The section in Zcheripte describing adding the CRG to xstatus CSRs is ambiguous on the writability of the new bits, specifically for sstatus:
mstatus.CRG is made visible in sstatus.CRG.
This could imply that sstatus.CRG is a read-only mirror of mstatus.CRG, rather than being writable.
It would be better if the writability of these bits was explicit