On Wed, 2007-05-30 at 08:01 +0300, Avi Kivity wrote: > Rusty Russell wrote: > > but it's not clear to me that verifying PTEs is that > > much faster than shadowing them if you're prepared to be that invasive > > in the guest anyway. > > > This can probably be measured on Xen which can switch from direct to > shadow mode on runtime.
Sorry, I was a little oblique here. The Xen shadow mode code is aimed at supporting full virtualization, so it's not really a fair comparison. Their direct page access code hooks deep into the guest; the outstanding question is how efficient would a shadow implementation which made similar guest changes be? Unfortunately, there's a lot of coding between here and the answer 8) Rusty. ------------------------------------------------------------------------- This SF.net email is sponsored by DB2 Express Download DB2 Express C - the FREE version of DB2 express and take control of your XML. No limits. Just data. Click to get it now. http://sourceforge.net/powerbar/db2/ _______________________________________________ kvm-devel mailing list kvm-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/kvm-devel
