[PATCH 2/3] kdumpctl: Use kexec file based mode to unload kdump kernel

[Dave Young]

On 09/05/14 at 10:16am, Dave Young wrote:
> On 09/03/14 at 12:07pm, Vivek Goyal wrote:
> > Currently old kexec syscall denies unloading a kernel if secureboot is enabled.
> > I think this is not right behavior and should be changed. But for now, use
> > new syscall if secureboot is enabled and that allows unloading kernel.
> 
> We need to make sure the new syscall is in latest Fedora kernel, then we can add
> this patch in kexec-tools.

BTW, seems there's a new kconfig option for the syscall, it need a fedora kernel
patch if it's not default on.

> 
> > 
> > Signed-off-by: Vivek Goyal <vgoyal at redhat.com>
> > ---
> >  kdumpctl | 7 ++++++-
> >  1 file changed, 6 insertions(+), 1 deletion(-)
> > 
> > diff --git a/kdumpctl b/kdumpctl
> > index bb98225..9403d61 100755
> > --- a/kdumpctl
> > +++ b/kdumpctl
> > @@ -826,7 +826,12 @@ stop_fadump()
> >  
> >  stop_kdump()
> >  {
> > -	$KEXEC -p -u
> > +	if is_secure_boot_enforced; then
> > +		$KEXEC -s -p -u
> > +	else
> > +		$KEXEC -p -u
> > +	fi
> > +
> >  	if [ $? != 0 ]; then
> >  		echo "kexec: failed to unload kdump kernel"
> >  		return 1
> > -- 
> > 1.9.0
> > 
> > _______________________________________________
> > kexec mailing list
> > kexec at lists.fedoraproject.org
> > https://lists.fedoraproject.org/mailman/listinfo/kexec
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>