Re: [PATCH] x86_64: sync_tsc fix the race (so we can boot)

From: yhlu
Date: Fri Jul 29 2005 - 20:02:25 EST

I will use linus's latest tree to have a try.


On 7/29/05, Eric W. Biederman <ebiederm@xxxxxxxxxxxx> wrote:
> yhlu <yhlu.kernel@xxxxxxxxx> writes:
> > if using you patch, the
> > "synchronized TSC with CPU" never come out.
> >
> > then with your patch, I add back patch that moving set callin_map from
> > smp_callin to start_secondary. It told me can not inquire the apic for
> > the CPU 1....2....
> Hmm. You didn't post enough of a boot log for me to see the problem.
> Does it boot and you don't see the message or is it something
> else.
> > Can we put tsc_sync_wait() back to smp_callin?
> >
> > So that it will be executed serially and we can get
> > "synchronized TSC with CPU"?
> Currently that just seems silly. That code should be async
> safe.
> But it sounds like you have some weird bug I don't understand.
> Eric
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