Re: [Xen-devel] Xen 4 TSC problems

["Jan Beulich" <JBeulich@xxxxxxxx>]

>>> On 19.09.11 at 12:39, George Dunlap <George.Dunlap@xxxxxxxxxxxxx> wrote:
> The comment at the top of init_xen_time() is correct now, but from the
> time it was first written through 4.1 is was just plain wrong -- it
> said init_xen_time() happened after all cpus were up, which has never
> been true.

Not really - CPUs got booted by that time originally (pre-4.0, which is
what the old comment said), but not onlined. Prior to the use of
smp_call_function() for the TSC reliability check I assume only CPU
feature flags got looked at, which was available at that point prior to
Keir's re-work of the SMP boot process.

Jan


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