On Thu, 2006-03-16 at 17:08 -0800, Andrew Morton wrote:
> Srivatsa Vaddagiri <[email protected]> wrote:
> >
> > Bryce reported a bug wherein offlining CPU0 (on x86 box) and then subsequently
> > onlining it resulted in a lockup.
> >
> > On x86, CPU0 is never offlined. The subsequent attempt to online CPU0
> > doesn't take that into account. It actually tries to bootup the already
> > booted CPU. Following patch fixes the problem (as acknowledged by
> > Bryce). Please consider for inclusion in 2.6.16.
> >
> >
>
> Is x86 the only architecture which is exposed to this?
I guess i386 is the only architecture exposing to this. i386 uses a
slight different method to do cpu hotadd (prepare cpu, and then up cpu).
This is to workaround some issues like tsc synchronizing.
Thanks,
Shaohua
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