kexec won't --load-panic a 2.6.22 relocatable kernel?
snitzer at gmail.com
Mon Mar 24 10:18:15 EDT 2008
On Mon, Mar 24, 2008 at 4:29 AM, Simon Horman <horms at verge.net.au> wrote:
> On Fri, Mar 21, 2008 at 02:32:36PM +0900, Simon Horman wrote:
> > On Wed, Mar 19, 2008 at 02:05:46AM -0400, Mike Snitzer wrote:
> > > I'm building a x86_64 2.6.22 kernel with the following options set:
> > >
> > > CONFIG_KEXEC=y
> > > CONFIG_CRASH_DUMP=y
> > > CONFIG_RELOCATABLE=y
> > > CONFIG_PHYSICAL_START=0x200000
> > >
> > > If I try to load the kernel with the following I get:
> > >
> > > ./kexec --args-linux -p '--command-line=ro root=LABEL=/1 rhgb quiet
> > > irqpoll maxcpus=1' --initrd=/boot/initrd-220.127.116.11.img
> > > /boot/vmlinuz-18.104.22.168
> > >
> > > ./kexec: unrecognized option `--args-linux'
> > > kexec-tools-testing 20080318-rc released 18th March 2008
> > > Usage: kexec [OPTION]... [kernel]
> > > ...
> > > Cannot load /boot/vmlinuz-22.214.171.124
> > Hi Mike,
> > that looks a lot like a problem with kexec-tools parsing command line
> > arguments to me. However I'm not having much luck reproducing it here.
> > I'll poke a bit more.
> > Did you get kexec-tools-testing 20080318-rc as a tarball from
> > kernel.org? I just want to make sure we are looking at the same code.
> Sorry for being a bit slow, I have managed to reproduce the problem,
> which is that --args-linux can't be used if the image is a bzImage.
> Could you try with a vmlinux image instead?
Interesting, makes sense.
Sure enough RedHat's image is a "ELF 64-bit LSB shared object" and a
vmlinux is "ELF 64-bit LSB executable".
I wonder how RedHat gets their kernel image to be an ELF image?
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