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SubjectRe: [RFC]Kexec based crash dumping

On Thu, Aug 19, 2004 at 08:45:00AM +0900, Itsuro Oda wrote:
> - prepare a kernel which does only dump real memory to block
> device. ("dump mini kernel")
> - pre-allocate the memory (4MB is enough) used by the dump mini
> kernel and pre-load the dump mini kernel.
> - when crash occur exec the dump mini kernel.
> - the dump mini kernel stands in and only uses pre-allocated
> area.

One question, what happens in your concept when some stubborn zombie
kernel driver (say Nvidia) comes along and overwrites random memory
areas? Will the booting of the dump kernel simply fail?

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