[PATCH 4/5] kexec: fallback to KEXEC_LOAD when KEXEC_FILE_LOAD is not supported.

[Michal Suchánek]

On Fri, 2 Mar 2018 13:46:10 +0100
Simon Horman <horms at verge.net.au> wrote:

> On Fri, Mar 02, 2018 at 01:32:52PM +0100, Michal Suchánek wrote:
> > On Fri, 2 Mar 2018 17:24:19 +0800
> > Dave Young <dyoung at redhat.com> wrote:
> >   
> > > On 02/26/18 at 01:00pm, Michal Suchanek wrote:  
> > > > Not all architectures implement KEXEC_FILE_LOAD. However, on
> > > > some archiectures KEXEC_FILE_LOAD is required when secure boot
> > > > is enabled in locked-down mode. Previously users had to select
> > > > the KEXEC_FILE_LOAD syscall with undocumented -s option.
> > > > However, if they did pass the option kexec would fail on
> > > > architectures that do not support it.
> > > > 
> > > > When no option is passed to select one syscall or the other try
> > > > KEXEC_FILE_LOAD and fall back to KEXEC_LOAD when not
> > > > suported.    
> > > 
> > > Again, IMHO the default behavior should not be changed..  
> > 
> > So adding a new option to enable the fallback would be ok?  
> 
> I am also wary of changing the default behaviour and
> I think a new fallback option would be better.
> 
> Dave?

Ok, I will resend with a separate fallback option.

Thanks

Michal