[PATCH 0/2][concept RFC] x86: BIOS-save kernel log to disk upon panic

[H. Peter Anvin]

On 01/26/2011 06:13 PM, Vivek Goyal wrote:
>>
>> - Use kexec/kdump. I wonder though, can kexec work on early panics? The
>>    kind where the disk itself might not yet be initialized?
>
> As of today kexec/kdump does not work with early panics as kdump kernel
> needs to be loaded in reserved memory and that action happens once the
> first kernel has booted.
>
> There is so much to it that I really don't think that modifying bootloaders to
> do all that might not trivial and more importantly I think it probably is not
> worth the effort.
>

It's really not all that hard, actually.

	-hpa