UVM_KM_PAGES_HIWAT_MAX
if (uvm_km_pages.hiwat > UVM_KM_PAGES_HIWAT_MAX)
uvm_km_pages.hiwat = UVM_KM_PAGES_HIWAT_MAX;
for (i = len; i < UVM_KM_PAGES_HIWAT_MAX; i++)
vaddr_t page[UVM_KM_PAGES_HIWAT_MAX];