Kexec for ARM: Is it expected to load old kernels?

Eric W. Biederman ebiederm at
Thu Apr 22 09:36:01 EDT 2010

Brian Smucker <bsmucker at> writes:

> Hello,
> Is there someone who can answer these questions out there?
> Perhaps you could give a name of someone who could help.

kexec is designed to boot arbitrary kernels.  How well you can do that
depends on how close the system can be returned to a state similar to
reset, and how robust the kernel you are booting is.

If you can get /sbin/kexec to reproduce your normal boot protocol it
is likely you can get an newer kernel to boot an older one.


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