On 10/24/2012 05:13 PM, Marcelo Tosatti wrote: > Allow the caller to pass host tsc value to kvm_x86_ops->read_l1_tsc(). > > Signed-off-by: Marcelo Tosatti <mtosatti@xxxxxxxxxx> Would you mind explaining why? it seems to me that rdtscll() here would be perfectly safe: the only case in which they wouldn't, is in a nested-vm environment running paravirt-linux with a paravirt tsc. In this case, it is quite likely that we'll want rdtscll *anyway*, instead of going to tsc directly. -- 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