On 08/09/2012 09:59 PM, Marcelo Tosatti wrote: >> >> > + wrmsr(msr, 0); >> > + if (time.version < 2 || time.tsc_to_system_mul == 0) >> > + return 0; >> > + >> > + /* go figure tsc frequency */ >> > + khz = pvclock_tsc_khz(&time); >> > + dprintf(1, "Using kvmclock, msr 0x%x, tsc %d MHz\n", >> > + msr, (u32)khz / 1000); >> > + return khz; >> >> That's a meaningless number. You can be migrated to a cpu or a machine >> with very different tsc. > > Thats why there exists hardware tsc frequency scaling and the software > equivalent for that on kvm. > The hardware is only available on a minority of processors in the field. The software equivalent isn't there. -- error compiling committee.c: too many arguments to function -- 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
