Re: Cannot boot any HIGHMEM kernel (kernel panic - not syncing)

[Andi Kleen]

Michael ElsdÃrfer <michael@xxxxxxxxxxxxxxx> writes:
>
> Now, Machine Check Exception seems to point towards a hardware error,

It not only seems to, it does.

> but not only does the 486 kernel appear to work flawlessly, the server
> was perfectly happy running a self-compiled sarge kernel (with HIGHMEM)
> just a couple of days ago.

The non highmem kernel will simply not use most of your memory, so if 
the machine check happens accessing memory you will not see it.

-Andi
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