Re: [PATCH v3 13/15] livepatch: change to a per-task consistency model

[Josh Poimboeuf]

On Thu, Jan 05, 2017 at 10:34:57AM +0100, Miroslav Benes wrote:
> 
> > @@ -740,6 +809,14 @@ int klp_register_patch(struct klp_patch *patch)
> >  		return -ENODEV;
> >  
> >  	/*
> > +	 * Architectures without reliable stack traces have to set
> > +	 * patch->immediate because there's currently no way to patch kthreads
> > +	 * with the consistency model.
> > +	 */
> > +	if (!klp_have_reliable_stack() && !patch->immediate)
> > +		return -ENOSYS;
> > +
> 
> I think an error message (pr_err) would be appropriate here. 
> 
> $ insmod patch_1.ko
> insmod: ERROR: could not insert module patch_1.ko: Function not implemented
> 
> is not helpful much :)

Ok :-)

-- 
Josh