My question is regarding performance counters for guest. I run my KVM on an i3 Intel Processor. My objective is to get the number of instructions in between every interrupt delivered to the guest OS after which I log into a file. I use the PERFEVTSEL0 for enabling instruction retired perf counter. I enable the counter before VMlaunch/Vmresume instruction and on the return I disable the counter. This approach is not good as I may be counting instructions in host interrupts and other processes also. I tried to use these performance counters inside the guest and the guest gets a GPF and kvm says it as an "unhandled wrmsr". What is the right approach to solve the problem? I would prefer to have the guest unmodified to get the counters. Does Intel i3 provide "guest mode only" performance counters? Thanks, Mehul -- 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
