Chuck Ebbert <[email protected]> writes:
> Page faults during kernel initialization can be hard to diagnose.
>
> Add a handler that prints the fault address, EIP and top of stack
> when an early page fault happens.
You should do it for all the exceptions then
(except perhaps NMI). Isn't much more work - see the x86-64 code.
> +hlt_loop:
> + hlt
There are still supported i386 CPUs that don't support HLT and
would recursively fault here.
> + rep ; nop
> + jmp 1b
Looks a bit weird to not jump to hlt back again but ok.
The HLT is unlikely to come back anyways because interrupts
are off.
-Andi
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