On Mon, Jul 09, 2007 at 07:29:59PM +0100, Keir Fraser wrote:
> Oh! I take it then that the infiniband driver will call sync_single() on
> subsections of a mapped region? I haven't seen that behaviour before and it
> will kill lib/swiotlb.c (the generic Linux swiotlb implementation) just as
> surely as it does the Xen-specific swiotlb!
>
> We could make the swiotlb robust to this treatment, I guess. It will involve
> initialising all covered io_tlb_orig_addr[] slots rather than just the
> first. You could even have a go at this yourself if you like: rather than
> initialising a single slot at the end of map_single(), you'd have a for-loop
> to iterate over each allocated swiotlb slab.
Is there a reason why this is not an issue in Dom0?
-- 
Lukáš Hejtmánek
_______________________________________________
Xen-devel mailing list
Xen-devel@xxxxxxxxxxxxxxxxxxx
http://lists.xensource.com/xen-devel