[Fastboot] 64 bit to 32 bit kernel through kexec?

Vivek Goyal vgoyal at in.ibm.com
Mon Jun 11 06:20:52 EDT 2007

On Tue, Jun 05, 2007 at 02:26:46PM -0400, Leong, Gary wrote:
> I had a quick question, I'm using kexec to boot from a 32 bit to 64 bit
> kernel.  I'm having no problems at this point, but wasn't sure if I will
> have problems.  
> Do you know of any theoretical issues going from 64 bit to 32 bit and
> vice versa?  I figure the former should pose the least amount of
> problems.  
> Anyhow, any help would appreciate.  Thanks in advance!


The mailing list for kexec discussions has changed. So copying it to
differnt list. 

AFAIK, on x86_64, 64bit to 32bit kexec or vice versa works just fine and
it is not by chance. It has been designed that way.


More information about the kexec mailing list