> Is creating Shared memory of greater or closer to 4MB creates page table
> entries in all processes sharing it?
>
> I think, it will be good to allocate a single page-table and share it
> across process than creating 1024 PTE's in all processes sharing it. Is this
> taken care in 2.1.x kernel?
I can well imagine why Oracle is interested in this - many DB setups I've
seen use hundreds of megabytes, if not a gigabyte shared memory. That way
our current way of having completly distinct page tables per mm is wasting
large amounts for Oracle, Sybase & Co.
Ralf
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