Re: NexGen detection

From: Alan Cox (alan@lxorguk.ukuu.org.uk)
Date: Fri Apr 14 2000 - 09:33:41 EST


> > It reboots. Thats actually why the current 2.3.x code crashes if you have
> > a very early Cyrix/TI 486DLC
>
> Is it possible to install a unknown instruction handler? Is it worth it?

If you want to write the code then go for it. In theory you can check cpuid
availability by toggling a bit in eflags, we do that already

> Problem is though that nexgens with CPUID instruction ain't telling it to
> the world using the CPUID feature flag :-} Not very smart - I agree,
> but workaround exists. Any reasons not to work around this bug? Would it
> cause something else not to work, or?

Is there another way to detect nexgen and then try cpuid ?

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