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