On Mon, May 23, 2011, Avi Kivity wrote about "Re: [PATCH 0/30] nVMX: Nested VMX, v9": > vmcs01 and vmcs02 will both be generated from vmcs12. If you don't do a clean nested exit (from L2 to L1), vmcs02 can't be generated from vmcs12... while L2 runs, it is possible that it modifies vmcs02 (e.g., non-trapped bits of guest_cr0), and these modifications are not copied back to vmcs12 until the nested exit (when prepare_vmcs12() is called to perform this task). If you do a nested exit (a "fake" one), vmcs12 is made up to date, and then indeed vmcs02 can be thrown away and regenerated. Nadav. -- Nadav Har'El | Monday, May 23 2011, 19 Iyyar 5771 nyh@xxxxxxxxxxxxxxxxxxx |----------------------------------------- Phone +972-523-790466, ICQ 13349191 |Jury: Twelve people who determine which http://nadav.harel.org.il |client has the better lawyer. -- 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
