On 09/07/2018 11:05, Peter Zijlstra wrote: > On Fri, Jul 06, 2018 at 06:13:11PM +0200, Thomas Gleixner wrote: >> - native_write_msr(msr_kvm_wall_clock, low, high); >> + wrmsrl(msr_kvm_wall_clock, slow_virt_to_phys(&wall_clock)); > Does it matter that you went from an explicit native WRMSR instruction > to a potentially paravirt MSR thing? No, KVM doesn't paravirtualize wrmsr. Paolo
