Hi folks, https://www.linux-kvm.org/page/Memory states: "A single access to a guest page can take up to 25 memory accesses to complete, which gets very costly. See this paper: ..." First, the paper url changed to: http://developer.amd.com/wordpress/media/2012/10/NPT-WP-1%201-final-TM.pdf Second, I can't find any "25" in the paper. Though a "24" in section 4.2.2: "... In such a case a TLB miss cost can increase from 4 memory references in non-nested paging to 24 in nested paging unless caching is done. ..." Anyone would like to fix that? I can't, as I don't get the confirmation mail, see below. Cheers, Daniel -----8<----- KVM could not send your confirmation mail. Please check your email address for invalid characters. Mailer returned: authentication failure [SMTP: Invalid response code received from server (code: 535, response: 5.7.8 Username and Password not accepted. Learn more at 5.7.8 https://support.google.com/mail/?p=BadCredentials f11sm4498579qtp.85 - gsmtp)] ----->8-----