[PATCH v2 1/7] powerpc/85xx: re-enable timebase sync disabled by KEXEC patch

[Kumar Gala]

On Nov 16, 2011, at 12:42 PM, Scott Wood wrote:

> On 11/16/2011 03:55 AM, Zhao Chenhui wrote:
>> From: Li Yang <leoli at freescale.com>
>> 
>> The timebase sync is not only necessary when using KEXEC. It should also
>> be used by normal boot up and cpu hotplug. Remove the ifdef added by
>> the KEXEC patch.
> 
> Again, no it should not be used by normal boot up (whether KEXEC support
> is enabled or not).  We should only do timebase sync when we actually
> need to (when we've actually just reset a core), and we should do it the
> way U-Boot does rather than with smp-tbsync.c.


How can we do u-boot bases timebase sync after the system us up and running?  For example would we losing some ticks of time in the case that one core is up and we bring a second core online?

- k