test/zdtm : shm-mp fix page size
test/zdtm : shm-mp fix page size

Test should not assume that page size is 4096.

The test was failing on ppc64 where page size is usually 64K.

Signed-off-by: Laurent Dufour <a59ffce977ae3d39bdc87f81ff88b229ad58db88@linux.vnet.ibm.com>
Signed-off-by: Pavel Emelyanov <c9a32589e048e044184536f7ac71ef92fe82df3e@virtuozzo.com>

eabatalov/criu,eabatalov/criu,KKoukiou/criu-remote,efiop/criu,eabatalov/criu,efiop/criu,efiop/criu,efiop/criu,KKoukiou/criu-remote,eabatalov/criu,KKoukiou/criu-remote,KKoukiou/criu-remote,eabatalov/criu,KKoukiou/criu-remote,eabatalov/criu,efiop/criu,KKoukiou/criu-remote,efiop/criu