allow_unsafe_assigned_interrupts=1 does work:
$ grep QEMU /proc/cpuinfo model name : QEMU Virtual CPU version 1.0 model name : QEMU Virtual CPU version 1.0
$ lspci | grep Fun 00:05.0 Ethernet controller: Intel Corporation 82576 Virtual Function (rev 01)
allow_unsafe_ assigned_ interrupts= 1 does work:
$ grep QEMU /proc/cpuinfo
model name : QEMU Virtual CPU version 1.0
model name : QEMU Virtual CPU version 1.0
$ lspci | grep Fun
00:05.0 Ethernet controller: Intel Corporation 82576 Virtual Function (rev 01)