Juli Mallett wrote:
> > > > Any thoughts? I attach full dmesg and mptable output. Kernel
> > > > config too.
> > >
> > > 5.0 doesn't support HyperThreading.  The upcoming 5.1 and 4.8 releases
> > > will support it.
> >
> > it doesn't? I have a 5.0-R box that surely does support HTT.
> 
> Your BIOS puts the logical CPUs into the MPTable.

John Baldwin posted a patch for this that would use the CPUID
instruction to detect Hyperthreading.  Of course, that means
you can not turn it off.  The patch was posted to -current about
3-4 weeks ago.

-- Terry

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