On Mon, Aug 26, 2019 at 04:17:03PM +1000, Alexey Kardashevskiy wrote: > Invalidating a TCE cache entry for each updated TCE is quite expensive. > This makes use of the new iommu_table_ops::xchg_no_kill()/tce_kill() > callbacks to bring down the time spent in mapping a huge guest DMA window; > roughly 20s to 10s for each guest's 100GB of DMA space. > > Signed-off-by: Alexey Kardashevskiy <aik@xxxxxxxxx> With the addition of "Book3S" to the patch title, Acked-by: Paul Mackerras <paulus@xxxxxxxxxx>
