On 2014-10-08 12:20, Paolo Bonzini wrote: > Il 08/10/2014 11:51, Jan Kiszka ha scritto: >>>> Could you point out where the other places L0 sets >>>> CPU_BASED_VIRTUAL_INTR_PENDING before entering L2? >> enable_irq_window(). I instrumented it, and it showed up right before >> vmcs12 state became corrupted. > > But it would write to the vmcs02, not to the shadow VMCS; the shadow > VMCS is active during copy_shadow_to_vmcs12/copy_vmcs12_to_shadow, and > at no other time. It is not clear to me how the VIRTUAL_INTR_PENDING > bit ended up from the vmcs02 (where it is perfectly fine) to the vmcs12. Well, but somehow that bit ends up in vmcs12, that's a fact. Also that the proble disappears when shadowing is disabled. Need to think about the path again. Maybe there is just a bug, not a conceptual issue. Jan -- Siemens AG, Corporate Technology, CT RTC ITP SES-DE Corporate Competence Center Embedded Linux -- 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
