Re: [kvm-devel] Guest kernel hangs in smp kvm for older kernelsprior to tsc sync cleanup

2007-12-19 Thread Avi Kivity
Dor Laor wrote: > > > > vmx (and svm) allow us to add an offset to the physical tsc. We set it > > on startup to -tsc (so that an rdtsc on boot would return 0), and > > massage it on vcpu migration so that guest rdtsc is monotonic. > > > > The net effect is that tsc on a vcpu can experience la

Re: [kvm-devel] Guest kernel hangs in smp kvm for older kernelsprior to tsc sync cleanup

2007-12-19 Thread Dor Laor
Amit Shah wrote: On Wednesday 19 December 2007 21:02:06 Glauber de Oliveira Costa wrote: > On Dec 19, 2007 12:27 PM, Avi Kivity <[EMAIL PROTECTED]> wrote: > > Ingo Molnar wrote: > > > * Avi Kivity <[EMAIL PROTECTED]> wrote: > > >> Avi Kivity wrote: > > >>> Testing shows wrmsr and rdtsc function