On 24/05/2019 12.33, Christian Borntraeger wrote: > To avoid testcase failures we need to enable the pgstes. This can be > done with /proc/sys/vm/allocate_pgste or with a linker option that > creates an S390_PGSTE program header. Oh, right, I initially enabled it on my LPAR via "sysctl vm.allocate_pgste=1" when I started working on the selftests and then completely forgot about this... The linker option is certainly the better way to do this, thanks for the patch! Reviewed-by: Thomas Huth <thuth@xxxxxxxxxx>