Avi Kivity wrote: > On 07/13/2010 08:48 AM, Xiao Guangrong wrote: >> >>> Right. We should fix those too. >>> >>> Prefetch is much more worrying though, especially with ept. If a guest >>> is using just 1/8 of the pages, it can look to migration as if it's >>> using 100% of the pages. The impact can be pretty large. >>> >> We disabled prefetch if ept is enabled since it can break access bit >> tracking. >> > > Oh yes. > >> I'll fix the dirty bit tracking before post the new version of this >> patchset. >> > > Should be simple - disable prefetch for slots that have dirty tracking > enabled. Agree. > > What about the Linux accessed and dirty bits? Need to instantiate the > speculative sptes with accessed and dirty bits clear (and later examine > them when we release the page). > I see, will do :-) -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
