[PATCH] kexec: Add option to fallback to old kexec syscall when kexec file based syscall failed

[Petr Tesarik]

On Fri, 15 Jul 2016 07:57:22 +0800
joeyli <jlee at suse.com> wrote:

> Hi Vivek
> 
> On Thu, Jul 14, 2016 at 10:53:28AM -0400, Vivek Goyal wrote:
> > On Thu, Jul 14, 2016 at 04:45:11PM +0800, Lee, Chun-Yi wrote:
> > > This patch adds a new "--fallback-kexec" option to give a chance to
> > > fallback to old kexec syscall when file based kexec syscall operation
> > > failed.
> > 
> > I think caller should switch to using different interface if need be. But
> > I don't see much point in providing an option for this in kexec-tools.
> > 
> > Vivek
> >
> 
> OK~ Understood!
> 
> Thanks for Baoquan's and your opinion for this patch.

Is there some sort of diagnostics, so a calling script can determine
whether kexec failed, because there's no suppor for kexec_file_load(2)
or for a different reason? 

Thanks,
Petr T