On Fri, May 20, 2011, Tian, Kevin wrote about "RE: [PATCH 07/31] nVMX: Introduce vmcs02: VMCS used to run L2": > btw, shouldn't you clear recycled VMCS and reset 'cpu' and 'launched' fields? Well, I believe the answer is "no": As far as I understood, a host is allowed to take a VMCS that has been used once to launch a certain guest, and then modify all the VMCS's fields to define a completely different guest, and then VMRESUME it, without doing the regular VMCLEAR/VMLAUNCH, even though it's "a different guest". Is there something wrong in my assumption? Does VMX keep anything constant between successive VMRESUMEs? > Have you tried SMP L2 guest? It "sort of" works, but it *does* appear to still have a bug which I didn't yet have the time to hunt... In one case, for example, an 8-vcpu L2 on an 8-vcpu L1 seemed to work well (e.g., doing parallel make) for about a minute, and then hung with some sort of page fault in the kernel. Nadav. -- Nadav Har'El | Friday, May 20 2011, 17 Iyyar 5771 nyh@xxxxxxxxxxxxxxxxxxx |----------------------------------------- Phone +972-523-790466, ICQ 13349191 |Anyone is entitled to their own opinions. http://nadav.harel.org.il |No one is entitled to their own facts. -- 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
