On 14/05/15 18:00, Julien Grall wrote: > With 64KB page granularity support in Linux, a page will be split accross > multiple MFN (Xen is using 4KB page granularity). Thoses MFNs may not be > contiguous. > > With the offset in the page, the helper will be able to know which MFN > the driver needs to retrieve.
I think a gnttab_grant_foreign_access_ref()-like helper that takes a page would be better. You will probably want this helper able to return/fill a set of refs for 64 KiB pages. David -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
