>How about the following, which is your patch and Michael's suggestion to
>allow an option to override the number of PTE's for large swap?  I guess
>we need to do some figures to work out what "large swap" is...

but does config-time tuning make sense?  If the 1024 in the old-Mach
VM really refers to PAGER_MAP_SIZE bytes (4MB or 1k pagesin vm_pager.c),
there seems no point in allocating more PTEs.

Michael is the 2048 based on a UVM parameter, or is it just
`more than 1k'?