Kind of answering my own question, but disabling hyperthreading
happened to
be a workaround for the resume from suspend issue.
But shouldn't hyperthreading have already been disabled ever since QSB-043?
https://www.qubes-os.org/news/2018/09/02/qsb-43/
I admit that I missed that one as well. Shame on me. Is there some way
to detect active hyperthreading on boot && print out a big red warning ?
That seems a reasonable measure, especially for new-comers how cannot
reasonably be asked to read all old QSB's first :)
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