Re: RFD: Should we remove the HLT check? (was Re: [PATCH 1/8] x86:avoid check hlt if no timer interrupts)

[Arjan van de Ven]

On 5/7/2010 15:24, Alan Cox wrote:
> > I'd be cool skipping it for family 5 or newer.  I'm just wondering if we
> > should kill it completely -- IIRC it was only a handful of 386/486
> > systems which had problems, usually due to marginal power supplies which
> > couldn't handle the noise of a variable load (DOS not having any power
> > management would run at a reliable 100% load) -- that's not exactly the
> > type of systems which would have survived to modern day.
>
> Also SMM and hardware bugs on some platforms - Cyrix MediaGX 5510 for
> example where a hlt at the wrong moment during ATA transfers hung the box
> until power cycle. But all old old stuff.

but a boot time "does hlt work at all" check won't catch that.
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