On Sat, 14 Jul 2007, Russell King wrote:

> It would also be nice to convert ARM to using sparsemem rather than
> discontigmem, but despite having a patch adding the supporting common
> infrastructure for the last year and a half or so, no one in the ARM
> community is interested in it.

Yeah I was also not interested for the longest time because when I 
became concerned when I looked at the code generated by sparsemem for 
virt_to_page and page_address. But that is different now.
 
> Since I've no machines which use the present discontig support and
> have more than a single bank of memory, I've no way to test and
> progress sparsemem on ARM - and since no one's interested I'm probably
> going to drop the ARM sparsemem git branch soon.

Could you keep it around for a while longer? sparse_virtual now allows 
code reduction in page_address and virt_to_page even vs. discontig.

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