Re: [patch] x86, tsc: skip TSC synchronization checks for tsc=reliable

Srivatsa S. Bhat
2011-11-07T19:36:41Z

Hi,

On 11/05/2011 04:12 AM, Suresh Siddha wrote:
> tsc=reliable boot parameter is supposed to skip all the TSC stablility
> checks during boot time.
>
> On a 8-socket system where we want to run an experiment with the
> "tsc=reliable" boot option, TSC synchronization checks are not
> getting skipped and marking the TSC as not stable.
>

I was facing this same problem some time back with some of my machines.

> Check for tsc_clocksource_reliable (which is set via tsc=reliable or
> for platforms supporting synthetic TSC_RELIABLE feature bit etc)
> and when set, skip the TSC synchronization tests during boot.
>

This patch fixes the issue. Thanks for the fix!

> Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com>

Tested-by: Srivatsa S. Bhat <srivatsa.bhat@linux.vnet.ibm.com>

Thanks,
Srivatsa S. Bhat