rmuir commented on PR #12737:
URL: https://github.com/apache/lucene/pull/12737#issuecomment-1787102205

   > You can't get zen version or detect Ryzen CPUs easily. Please do not add 
cpuinfo parsing as this won't work on alternate platforms like Windows.
   
   We can just retrieve another flag to see it. openjdk already detects stuff 
like this and then sets flags accordingly, so we can infer it.
   
   
https://github.com/openjdk/jdk/blob/e05cafda78a37dbeb2df2edd791be19d22edaece/src/hotspot/cpu/x86/vm_version_x86.cpp#L1463
   
   I will make openjdk "give up the goods" despite it trying to hide them :)


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