Greped this maybe interesting from dmesg:
NX (Execute Disable) protection: active
initial memory mapped: [mem 0x00000000-0x17dfffff]
2114MB HIGHMEM available.
889MB LOWMEM available.
Reserving Intel graphics memory at 0x00000000bc000000-0x00000000bfffffff
Memory: 3020372K/3076344K available (5758K kernel code, 648K rwdata, 1700K rodata, 744K init, 520K bss, 55972K reserved, 0K cma-reserved, 2165384K highmem)
It looks like NX is set by default. But I can't see explicit if PAE is used and I don't have an alternative 32bit system available for a cross check.