How does kdump deal with trampoline allocation?

Eric W. Biederman ebiederm at
Tue Dec 28 23:13:50 EST 2010

"H. Peter Anvin" <hpa at> writes:

> On 12/27/2010 11:40 PM, Eric W. Biederman wrote:
>>> OK, that's straightforward.  That presumably means that the low 640K is
>>> marked unused in the memory map that memblock sees during early startup.
>>>  That fits very cleanly with the patches I'm doing.
>> Additionally we typically start with maxcpus=1 so we don't strictly
>> need the trampoline to start other cpus.
> Well, the trampoline is optional only on 32 bits, and with my changes,
> it would be unconditional.

What motivates your trampoline rewrite?


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