Re: [PATCH 2.5.43-mm2] New shared page table patch

[Ulrich Drepper]

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Dave McCracken wrote:

>   3) The current large page implementation is only for applications
>      that want anonymous *non-pageable* shared memory.  Shared page
>      tables reduce resource usage for any shared area that's mapped
>      at a common address and is large enough to span entire pte pages.

Does this happen automatically (i.e., without modifying th emmap call)?

In any case, a system using prelinking will likely have all users of a
DSO mapping the DSO at the same address.  Will a system benefit in this
case?  If not directly, perhaps with some help from ld.so since we do
know when we expect the same is used everywhere.

- -- 
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Ulrich Drepper \    ,-----------------'   \ Mountain View, CA 94041 USA
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