[Qemu-devel] Re: request : qemu-smp as target

[Blue Swirl]

> SMP est definitely possible in QEMU - a few days of work are necessary to 
> add the missing generic support and an x86 implementation... but currently 
> I prefer to work an other topics.
>
> Just for your information, some choices need to be made:
>
> 1) Do the CPUs share the same translation cache ?

This could be very useful, but wouldn't the cache need to be indexed by 
physical addresses, not virtual?

> 2) The first implementation would use a cycle counter to schedule between 
> CPUs. Is it interesting to go further and to use a host thread for each 
> guest CPU at the expense of more locking overhead ?

I'd skip the cycle counter at first iteration and schedule using a host 
timer and CPU idling. What are the things that need locking, by the way?

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