Comment # 41 on bug 1112824 from Zhiyuan Gao

(In reply to Martin Wilck from comment #35)
> (In reply to Michiel Janssens from comment #33)
> > 3. boot with kernel parameters:
> > spectre_v2=off
> > Transition is smooth
> > This parameter seems to have the biggest impact of all the tested parameters.
> > 
> 
> Thanks a LOT for figuring this out. But reading above that only openSUSE is
> affected - I'd assume that Ubuntu and Fedora are also shipping with these
> mitigations enabled by default, no?

So I had a look upon fedora29.
- kernel version 4.18.17
- gnome version 3.30.2
hyperthreading on and it seems spectre protection is also turned on

So presumably the only difference we have is that kernel version is different. 

What do you think?