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A comment on IBM ported Go to s390x mainframes. Parent comment

Re:IBM ported Go to s390x mainframes by wmf on Monday January 11, 2016 @02:26PM (#10882603)
Emulation is never going to be fast.
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Re:IBM ported Go to s390x mainframes by rodgerd on Monday January 11, 2016 @03:44PM (#10883351)
Sure it is. The s390x instruction set is microcode emulation on top of a POWER-derived microarchitecture, just as modern x86 chips are microcode on an underlying microarch.
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Re:IBM ported Go to s390x mainframes by filereaper on Monday January 11, 2016 @08:24PM (#10884933)
Completely wrong. s390x runs on its own dedicated hardware, it is not emulated on POWER. POWER and s390x are completely separate.

source: worked at IBM on their compilers team.

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