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SubjectRe: x86: Is there still value in having a special tlb flush IPI vector?
Resend to cc: Andi on an address which actually works.

Jeremy Fitzhardinge wrote:
> Now that normal smp_function_call is no longer an enormous bottleneck,
> is there still value in having a specialised IPI vector for tlb
> flushes? It seems like quite a lot of duplicate code.
>
> The 64-bit tlb flush multiplexes the various cpus across 8 vectors to
> increase scalability. If this is a big issue, then the smp function
> call code can (and should) do the same thing. (Though looking at it
> more closely, the way the code uses the 8 vectors is actually a less
> general way of doing what smp_call_function is doing anyway.)
>
> Thoughts?
>
> (And uv should definitely be hooking pvops if it wants its own
> flush_tlb_others; vsmp sets the precedent for a subarch-like use of
> pvops.)
>
> J
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