Am 2015-04-28 um 13:43 schrieb Paolo Bonzini: > > > On 28/04/2015 13:42, Nadav Amit wrote: >> It seems strange that the guest is allowed to set IA32_DEBUGCTL MSR for the >> nested VM and get this value to the physical IA32_DEBUGCTL (see >> prepare_vmcs02), while it cannot set IA32_DEBUGCTL for itself (see >> kvm_set_msr_common). >> >> Am I missing something? > > No, it makes no sense. Are you sure that vmx is not allowing direct access to that MSR while in guest mode? We do save/restore it on all Intel CPUs, see setup_vmcs_config. Not sure about the AMD situation, though. 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
