Re: [PATCH, RFC] panic-note: Annotation from user space for panics

[Eric W. Biederman]

Matt Mackall <mpm@xxxxxxxxxxx> writes:

> As much as I like kexec, it loses on memory footprint by about 100x.
> It's not appropriate for all use cases, especially things like
> consumer-grade wireless access points and phones.

In general I agree.  The cost of a second kernel and initrd can be
prohibitive in the smallest systems, and if you do a crash capture
with using a standalone app that is reinventing the wheel.

That said.  I can happily run kdump with only 16M-20M reserved.
So on many systems the cost is affordable.

Eric
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