Re: [PATCH v4 2/3] x86/time: yield to hyperthreads after updating TSC during rendezvous

2021-04-21 Thread Jan Beulich
On 20.04.2021 17:59, Roger Pau Monné wrote: > On Thu, Apr 01, 2021 at 11:54:27AM +0200, Jan Beulich wrote: >> Since we'd like the updates to be done as synchronously as possible, >> make an attempt at yielding immediately after the TSC write. >> >> Signed-off-by: Jan Beulich > > Reviewed-by:

Re: [PATCH v4 2/3] x86/time: yield to hyperthreads after updating TSC during rendezvous

2021-04-20 Thread Roger Pau Monné
On Thu, Apr 01, 2021 at 11:54:27AM +0200, Jan Beulich wrote: > Since we'd like the updates to be done as synchronously as possible, > make an attempt at yielding immediately after the TSC write. > > Signed-off-by: Jan Beulich Reviewed-by: Roger Pau Monné Did you observe any difference with

[PATCH v4 2/3] x86/time: yield to hyperthreads after updating TSC during rendezvous

2021-04-01 Thread Jan Beulich
Since we'd like the updates to be done as synchronously as possible, make an attempt at yielding immediately after the TSC write. Signed-off-by: Jan Beulich --- v4: New. --- a/xen/arch/x86/time.c +++ b/xen/arch/x86/time.c @@ -1708,7 +1708,14 @@ static void time_calibration_tsc_rendezv