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Created attachment 706954 [details] output of serial port from guest Description of problem: Booting a rhel 7.0 VM without -enable-kvm, guest kernel panic happened. Version-Release number of selected component (if applicable): # qemu-system-x86_64 -version QEMU emulator version 1.4.0, Copyright (c) 2003-2008 Fabrice Bellard # uname -r 3.8.0-0.40.el7.x86_64 How reproducible: 100% Steps to Reproduce: 1. 2. 3. Actual results: Expected results: Additional info: CLI: # qemu-system-x86_64 -M q35 -monitor stdio -drive file=rhel7.0-1.qcow2,if=none,id=drive-ide0-0-0,format=qcow2,cache=none -device virtio-blk-pci,drive=drive-ide0-0-0,bootindex=1 -vnc :1 -m 2048 -smp 2 -netdev tap,id=hostnet0,vhost=on -device virtio-net-pci,netdev=hostnet0,id=net0,mac=78:2b:cb:6e:41:22 -balloon none -boot menu=on -serial unix:/tmp/test,server,nowait