domibel commented on PR #50547:
URL: https://github.com/apache/arrow/pull/50547#issuecomment-5022360451

   @AntoinePrv Debian is using the x86-64-v1 baseline, so we build with 
ARROW_SIMD_LEVEL=NONE but keep ARROW_RUNTIME_SIMD_LEVEL=MAX for dispatching at 
runtime. That means we don't disable SIMD, we just keep it out of the baseline. 
The PR is fixing a regression introduced somewhere after the 23 release.
   
   @kou Could ARROW_SIMD_LEVEL=NONE be added to the nightly test coverage? 


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