For a while now (since tt mode was dropped and skas mode became the
only option?)  it looks as though UML has been UP-only on x86-64. And
even though the configs appear to allow building SMP on x86-32, there
are things like the panic() call in kernel/smp.c:idle_thread() which
imply that it won't work too well in 32-bit mode either.

For testing cgroups/cpusets changes we'd find it useful to be able to
run UML in SMP mode. Is anyone working on this, or can point us at a
list of the major things that need to be done to make SMP UML
practical?

Thanks,

Paul

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