Ouss4 opened a new pull request #4664:
URL: https://github.com/apache/incubator-nuttx/pull/4664


   ## Summary
   SCOMPARE1 is used by some atomic instructions and need to be preserved
   during a context switch.
   ## Impact
   This impacts Xtensa chips.  From the in-tree chips however only ESP32 
supports the S32C1I instruction, so only ESP32 is affected.
   ## Testing
   ESP32 and ESP32-S2 to confirm nothing is broken there.
   


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