[PATCH 0/2][concept RFC] x86: BIOS-save kernel log to disk upon panic
Ahmed S. Darwish
darwish.07 at gmail.com
Thu Jan 27 00:26:39 EST 2011
On Wed, Jan 26, 2011 at 08:44:14PM -0800, H. Peter Anvin wrote:
> 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.
Nice, I'll try prototyping this using syslinux and kexec: this seems the
safest path so far. Further details are in my first reply to Vivek.
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