jlaitine edited a comment on pull request #5775:
URL: https://github.com/apache/incubator-nuttx/pull/5775#issuecomment-1072204575


   I think this should be done as follows:
   - read the csr
   - mask the bits which should be preserved (from ISA spec)
   - set all the other bits
   
   Don't preserve any other bits here except the ones which are specified to be 
preserved


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