Hi Greg, I cloned and built suse12, and it does not have issues with EFI + PTI (kaiser) on my machine. BTW, i have also reproduced this problem on another machine with the same configuration, therefore, it is not specific only to one box. Also, as I mentioned earlier I am seeing the same issue with 4.1 + kaiser patches taken from 4.4.110. Thank you, Pavel On Sun, Jan 7, 2018 at 5:45 AM, Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> wrote: > On Fri, Jan 05, 2018 at 04:03:54PM -0500, Pavel Tatashin wrote: >> The hardware works :) I meant that before the patch linked in >> https://lkml.org/lkml/2018/1/5/534, I was never able to boot 4.4.110. But >> with that patch applied, I was able to boot it at least once, but it could >> be accidental. The hang/panic does not happen at the same time on every >> boot. > > Any chance you can grab the latest SLES 12 kernel and run it with pti > and efi enabled to see if that works properly for you or not? I trust > SUSE's testing of their kernel, and odds are I'm just missing one of > their many other patches they have in their tree for other issues that > they have seen in the past. > > If you want, I can just send you the full patch that they run on top of > the latest 4.4 stable tree, so you don't have to dig it out of their git > repo if you can't find the binary image. > > thanks, > > greg k-h