kexec and 2.6.14 x86_64

["Chris Friesen" <cfriesen@xxxxxxxxxx>]

Hi all,

I've got an x86_64 kernel with CONFIG_KEXEC=y, running a 32-bit 
userspace.  I'm using the latest kexec-tools-testing from 27-Feb-2008.

Just to try basic kexec functionality I tried loading my vmlinux file 
and got the following:

root@47:/root> ./kexec -l vmlinux
Cannot determine the file type of vmlinux


Just for kicks I tried using a bzImage file and it seems to work--at 
least I can successfully trigger a kexec and reboot to a command prompt. 
  Can someone explain what's going on?  Is x86_64 not supported for 
vmlinux files?

Also, I'm hoping to eventually get kdump working for this kernel. 
According to the testing logs at 
"http://lse.sourceforge.net/kdump/kdump-test-x86_64.html"; it looks like 
2.6.15 has at least basic support for kdump on x86_64 so I'm hoping to 
use that as a starting point.  I'll be looking at the git source and 
lkml/fastboot archives for patches, but does anyone happen to have any 
pointers as to what's necessary to backport this?  Also, is there a 
searchable fastboot archive anywhere?

Please cc me as I'm not subscribed to the list.

Thanks,

Chris
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