On 11/06/2017 09:35 PM, Pavel Tatashin wrote: > From: Will Deacon <[email protected]> > > The kasan shadow is currently mapped using vmemmap_populate() since that > provides a semi-convenient way to map pages into init_top_pgt. However, > since that no longer zeroes the mapped pages, it is not suitable for kasan, > which requires zeroed shadow memory. > > Add kasan_populate_shadow() interface and use it instead of > vmemmap_populate(). Besides, this allows us to take advantage of gigantic > pages and use them to populate the shadow, which should save us some memory > wasted on page tables and reduce TLB pressure. > > Signed-off-by: Will Deacon <[email protected]> > Signed-off-by: Pavel Tatashin <[email protected]> > ---
Acked-by: Andrey Ryabinin <[email protected]>
