qemu-arm-static 5.1 can't run gcc

Issue discovered while trying to build pikvm (1)

Long story short: when using qemu-arm-static 5.1, gcc exits whith message:

Allocating guest commpage: Operation not permitted


when using qemu-arm-static v5.0, gcc "works"

Steps to reproduce will follow 

(1)  https://github.com/pikvm/pikvm/blob/master/pages/building_os.md