On Sun, Feb 21, 2010 at 02:54:01PM +0200, Avi Kivity wrote: > So, if some other cpu (or the guest itself, with appropriate > permissions) modifies the msr permission bitmap, svm will not notice > this? svm loads the bitmap during entry? Yes. > I don't think you can tell, unless the host cpu modifying the vmcb is > synchronized with the guest (or the guest modifies its own vmcb). But > this is all academic. Hmm, another thing comes to mind. We would need some redesign of the nested_svm code to allow userspace to put a vcpu directly into nested state. With the MSR approach, all userspace does is to write MSRs into the vcpu before the first run? Joerg -- 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
