pte_update and 64-bit PTEs on PPC32?

[Kumar Gala]

On Apr 6, 2005, at 12:20 PM, Chris Friesen wrote:

> Kumar Gala wrote:
>
> > static inline pte_t ptep_get_and_clear(struct mm_struct *mm, unsigned
>  > long addr,
>  >                                        pte_t *ptep)
>  > {
>  >         pte_t tmp = *ptep;
>  >         pte_update(ptep, ~_PAGE_HASHPTE, 0);
>  >         return tmp;
>  > }
>
> Doesn't work.  The update and storing of the old value must be atomic.
> The value of the pte can change between storing the tmp value and
> calling pte_update().

Thanks, realized this after a bit more thought, and some discussion on 
lkml :)

Guess, I need to write a 64-bit pte version of pte_update, foo!

- kumar