Re: [patch] i386: early pagefault handler

[Andi Kleen]

Chuck Ebbert <76306.1226@xxxxxxxxxxxxxx> 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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