On Mon, Mar 06, 2000 at 11:29:47AM +0200, Tuukka Toivonen wrote:
> I have once read his papers and followed discussion here, but I'm not
> really qualified to answer. However, I'll do my best...
>
> The main idea seems to be to duplicate the kernel data structures in
> memory. For example, 32-way SMP system might have 8 copies of kernel data,
> each running as 4-way SMP system. This means that the kernel copy A
> accessing its own data structures locks only its own data -- kernel copies
> B, C, ... are not locked and can run at full speed.
Indeed, but the most common SMP systems do just broadcast the invalidates,
so your 4-way kernel #1 will still bother #2. It won't save you with
directory caches either because there the invalidates are directed only
to the CPU that actually has the CPU.
Ralf
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