On 06/07/2016 19:34, Eduardo Habkost wrote: >> > Nothing is needed in the kernel actually. You can skip the intercept >> > by running the guest with MSR_TSC_AUX set to the guest's expected value. >> > Which KVM does, except that it's botched so I need to apply the >> > patch in https://lkml.org/lkml/2016/4/13/802. > Do you mean -cpu Opteron_G*,+rdtscp will be buggy on Linux v4.5? > (v4.5 reports rdtscp as supported in GET_SUPPORTED_CPUID) > > Can we do something to make QEMU detect the buggy kernel before > allowing rdtscp to be enabled, or should we just tell people to > upgrade their kernel? We usually just tell people to use the latest stable kernel. Adding new CPU models is not a big deal, in fact it's almost easier than getting compat properties right. :) Paolo -- 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
