On 09/12/19 18:33, Thomas Huth wrote: >> It works for me though: >> >> $ /usr/bin/qemu-system-x86_64 -nodefaults -device pc-testdev -device >> isa-debug-exit,iobase=0xf4,iosize=0x4 -vnc none -serial stdio -device >> pci-testdev -machine accel=tcg -kernel x86/ioapic.flat > You have to run the test with "-smp 4" (like in x86/unittests.cfg), then > it hangs. The problem was actually that I hadn't recompiled x86/ioapic.flat. Now I can see the hang even with "-machine accel=kvm,kernel_irqchip=off|split", I'll take a look if Nitesh doesn't beat me. Paolo
