On top of my last patchset, I now implement TSC trapping and a flexible migration scheme for maintaining stable TSC across migration. Since it is administratively configured, it can be selectively enabled only for VMs which require it. In particular, VMs which use KVM clock probably do not want it.
We will need some administrative controls in qemu and in libvirt to make full use of this, but the design allows flexible and fairly simple control. In addition, users can override these settings with module parameters to forcibly disable or enable TSC trapping globally, for testing, workarounds, or performance. This may be slightly out of date, but I would like to solicit feedback about the patches, #2 especially. --Zach -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
