Re: [Xen-devel] [PATCH 2 of 2] Added a hook for clearing ptes when a vma is freed by the kernel. Adapted from gntdev

["Geoffrey Lefebvre" <geoffrey@xxxxxxxxx>]

Hi,

Thanks for the comment. I will update the patch.

geoffrey

On 5/23/07, Isaku Yamahata <yamahata@xxxxxxxxxxxxx> wrote:
> Hi.
>
> On Tue, May 22, 2007 at 07:17:56AM -0700, Geoffrey Lefebvre wrote:
> > +static pte_t blktap_clear_pte(struct vm_area_struct *vma,
> > +                           unsigned long uvaddr,
> > +                           pte_t *ptep, int is_fullmm)
>    [ snip ]
> > +     if (khandle->user != INVALID_GRANT_HANDLE) {
> > +
> > +             BUG_ON(xen_feature(XENFEAT_auto_translated_physmap));
> > +
> > +             gnttab_set_unmap_op(&unmap[count], virt_to_machine(ptep),
> > +                                 GNTMAP_host_map
> > +                                 | GNTMAP_application_map
> > +                                 | GNTMAP_contains_pte,
> > +                                 khandle->user);
> > +             count++;
> > +     }
>
> 'else pte_clear_full(...)' is necessary like gntdev for
> auto translated physmap mode.
>
> --
> yamahata
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