Re: [PATCH 2/4] ia64: allocate percpu area for cpu0 like percpu areasfor other cpus

[Tejun Heo]

Hello,

Christoph Lameter wrote:
> You did not answer my question.

Hmmm...

> The local percpu variables are accessed via a static per cpu
> virtual mapping. You cannot place per cpu variables outside of that
> virtual address range of PERCPU_PAGE_SIZE.
> 
> What happens if the percpu allocator allocates more data than available in
> the reserved area?

I still don't understand your question.  Static percpu variables are
always allocated from the first chunk inside that PERCPU_PAGE_SIZE
area.  Dynamic allocations can go outside of that but they don't need
any special handling.  What problems are you seeing?

-- 
tejun
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