Hi, When the membarriers feature was introduced, the kernel requirement was set to 4.14, however if my understanding of what is needed is correct that is rather strict?
http://lists.gnu.org/archive/html/qemu-devel/2018-03/msg02748.html As far as i can tell the feature was introduced in 4.3 see: https://elixir.bootlin.com/linux/v4.3.6/ident/MEMBARRIER_CMD_SHARED If I patch out that requirement Qemu also seems to run just fine, with SMP enabled (should hit the runtime check?) on a 4.9 LTS kernel. Can someone provide insights into why the requirement is set to 4.14? Br, Kim
