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

H. Peter Anvin hpa at zytor.com
Wed Jan 26 23:35:09 EST 2011

On 01/26/2011 06:00 AM, Ingo Molnar wrote:
> I mean, use the warm reset vector to truly reset the box.
> Then, once a stable known-good kernel boots, *that* kernel can then recover all the
> log data which is sitting in a well-known place in RAM, automatically and
> transparently.
> Basically a bit like kexec, just more convenient and it also goes through the BIOS
> warm reset, so it might work better than kexec ...

The problem is that the BIOS will often wipe memory.


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