> Martin wrote:
>> (and existing processes forcibly migrated off)
> 
> No can do.  As described in my previous message, everything is happily
> moved already, with some user code (and a CPU_MASK_ALL patch to kthread
> I haven't submitted yet) _except_ for a few per-CPU threads such as the
> migration helpers, which can _not_ be moved off their respective CPUs.

Well, that just means we need to check for things bound to a subset when
we fork it off. ie if we have cpus 1,2,3,4 ... and there is 

A bound to 1
B bound to 2
C bound to 3
D bound to 4

Then when I fork off exclusive subset for CPUs 1&2, I have to push A & B
into it. You're right, what I said was broken ... but it doesn't seem
hard to fix.

M.



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