On Sat, Oct 09, 2010 at 08:42:00PM +0200, Avi Kivity wrote: > On 10/07/2010 07:21 PM, Gleb Natapov wrote: > >On Thu, Oct 07, 2010 at 02:29:07PM +0200, Avi Kivity wrote: > >> On 10/04/2010 05:56 PM, Gleb Natapov wrote: > >> >When page is swapped in it is mapped into guest memory only after guest > >> >tries to access it again and generate another fault. To save this fault > >> >we can map it immediately since we know that guest is going to access > >> >the page. Do it only when tdp is enabled for now. Shadow paging case is > >> >more complicated. CR[034] and EFER registers should be switched before > >> >doing mapping and then switched back. > >> > >> With non-pv apf, I don't think we can do shadow paging. The guest > >Yes, with non-pv this trick will not work without tdp. I haven't even > >considered it for that case. > > > > What about nnpt? The same issues exist. > I am not sure how nntp works. What is the problem there? In case of tdp prefault instantiates page in direct_map, how nntp interfere with that? -- Gleb. -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxxx For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>