Re: [PATCH v2] KVM: x86: update masterclock values on TSC writes

Paolo Bonzini
2014-11-05T09:36:10Z

On 05/11/2014 00:30, Marcelo Tosatti wrote:
> + /*
> + * If the vcpus have matched TSCs and host clocksource is TSC,
> + * perform request to enable masterclock.
> + *
> + * If the masterclock is enabled, perform request to update
> + * masterclock values.
> + */
> + if ((vcpus_matched && gtod->clock.vclock_mode == VCLOCK_TSC) ||
> + ka->use_master_clock)

This is not an explanation, it is a literal translation from C to
English. :) Can you also explain the why, especially for the first half
of the condition?

Paolo