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.