On 07/08/15 17:46, Julien Grall wrote: > Currently, a grant is always based on the Xen page granularity (i.e > 4KB). When Linux is using a different page granularity, a single page > will be split between multiple grants. > > The new helpers will be in charge to split the Linux page into grants and > call a function given by the caller on each grant. > > Also provide an helper to count the number of grants within a given > contiguous region. > > Note that the x86/include/asm/xen/page.h is now including > xen/interface/grant_table.h rather than xen/grant_table.h. It's > necessary because xen/grant_table.h depends on asm/xen/page.h and will > break the compilation. Furthermore, only definition in > interface/grant_table.h was required.
Reviewed-by: David Vrabel <[email protected]> But... > +/* Helper to get to call fn only on the first "grant chunk" */ > +static inline void gnttab_one_grant(struct page *page, unsigned int offset, > + unsigned len, xen_grant_fn_t fn, > + void *data) ...call this gnttab_for_one_grant(). David -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
