> Solution: The only solution I found to this dilemma is a new typedef: > a pgtable_t. For s390 pgtable_t will be a (pte *) - to be introduced > with a later patch. For everybody else it will be a (struct page *). > The additional problem with the initialization of the ptl lock and the > NR_PAGETABLE accounting is solved with a constructor pgtable_page_ctor > and a destructor pgtable_page_dtor. The page table allocation and free > functions need to call these two whenever a page table page is allocated > or freed. pmd_populate will get a pgtable_t instead of a struct page > pointer. To get the pgtable_t back from a pmd entry that has been > installed with pmd_populate a new function pmd_pgtable is added. It > replaces the pmd_page call in free_pte_range and apply_to_pte_range. > > Signed-off-by: Martin Schwidefsky <schwidefsky@xxxxxxxxxx> > --- Interesting. That means I don't need to have a PTE page to be a struct page anymore ? I can have good use for that on powerpc as well... Cheers, Ben. - To unsubscribe from this list: send the line "unsubscribe linux-s390" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
