x86: 0.962
KVM: 0.894
kernel: 0.831
boot: 0.806
network: 0.699
device: 0.675
socket: 0.579
user-level: 0.565
peripherals: 0.536
ppc: 0.535
graphic: 0.521
architecture: 0.508
performance: 0.494
register: 0.492
mistranslation: 0.449
semantic: 0.430
PID: 0.392
permissions: 0.368
files: 0.367
vnc: 0.365
hypervisor: 0.343
arm: 0.342
i386: 0.332
risc-v: 0.224
debug: 0.220
assembly: 0.172
virtual: 0.172
TCG: 0.161
VMM: 0.161

latest qemu git doesn't load

commit ab0302ee764fd702465aef6d88612cdff4302809This is with 

qemu-system-x86_64: util/qemu-option.c:387: qemu_opt_get_bool_helper: Assertion `opt->desc && opt->desc->type == QEMU_OPT_BOOL' failed.
/home/njh/bin/kfreebsd-amd64: line 7: 32549 Aborted                 (core dumped) qemu-system-x86_64 -drive file=kfreebsd-amd64,index=0,media=disk,cache=writeback,aio=native -drive file=/dev/sr0,index=1,media=cdrom -boot c -redir tcp:2232::22 -m 1024 -machine accel=kvm,kernel_irqchip=on -cpu host -net user,hostname=qemu.bandsman.co.uk -net nic,model=e1000 -k en-us

Seems to be failing to parse kernel_irqchip=on correctly.

This issue seems to be similar to 1406706 and 1407454. Looks Marcel is working on a fix, and he also posted something to first address USB stuff,

https://<email address hidden>/msg272607.html

Hi; we fixed this with commit 446f16a6906e9d0 in March 2015, so I'm going to mark this as fixed.