Re: [OT] Major Clock Drift

[Andrew Morton]

Pavel Machek wrote:
> 
> > > Vesafb is happy to block interrupts for half a second.
> >
> > And has this been observed to cause clock drift?
> 
> YEs. I've seen time running 3 times slower. Just do cat /etc/termcap
> with loaded PCI bus. Yesterday I lost 20 minutes during 2 hours -- I
> have been using USB (load PCI) and framebuffer.

That's not good.  Very not good.

James Simmons has been looking into using something other
than spin_lock_irq(console_lock) to provide the
serialisation which these drivers need.  Apparently
it got messy.  I'm interested in getting involved
with this problem as well.  Sounds like it may not be
2.4 stuff though.

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