On Fri, Apr 21, 2017 at 11:20:43AM +0200, Christian Borntraeger wrote: > On 04/21/2017 11:14 AM, Greg KH wrote: > > On Fri, Apr 21, 2017 at 11:06:51AM +0200, Christian Borntraeger wrote: > >> Greg, stable team, > >> > >> here are the backports for 4.4,4.9 and 4.10 of > >> upstream commit id: a8f60d1fadf7b8b54449fcc9d6b15248917478ba > >> > >> The patch for 4.9 and 4.10 is identical. > >> The patch for 4.4 also fits for 4.1 > > > > Does this need to go farther back than 4.1? Specifically 3.18 and/or > > 3.16? > > The original problem (unused bit not deleted on set_pte_at for present > ptes) was introduced with 3.15 with > > commit b31288fa83b2bcc8834e1e208e9526b8bd5ce361 > s390/kvm: support collaborative memory management > > Looks like the 4.4 patch also fits on top of 3.16 it compiles and boots > but I have not done any bigger testing. Ok, thanks for the info, and the patches, queued up now. greg k-h