Gerd Hoffmann <kraxel@xxxxxxxxxx> writes: >> Necroposting! >> >> Turns out that this change broke "bochs-display" driver in QEMU even >> when the guest is modern (don't ask me 'who the hell uses bochs for >> modern guests', it was basically a configuration error :-). E.g: > > qemu stdvga (the default display device) is affected too. > So far, I was only able to verify that the issue has nothing to do with OVMF and multi-vcpu, it reproduces very well with $ qemu-kvm -machine q35,accel=kvm,kernel-irqchip=split -name guest=c10s -cpu host -smp 1 -m 16384 -drive file=/var/lib/libvirt/images/c10s-bios.qcow2,if=none,id=drive-ide0-0-0 -device ide-hd,bus=ide.0,unit=0,drive=drive-ide0-0-0,id=ide0-0-0,bootindex=1 -vnc :0 -device VGA -monitor stdio --no-reboot Comparing traces of working and broken cases, I couldn't find anything suspicious but I may had missed something of course. For now, it seems like a userspace misbehavior resulting in a segfault. -- Vitaly
