Hi all, the upstream qemu v1.1.0-rc4 x86_64
/opt/qemu/bin/qemu-system-x86-64 -s -kernel vmlinuz-3.0.0-22-generic -initrd initrd.img-3.0.0-22-generic -hda ./linux-0.2.img -append root=/dev/sda -boot c -monitor stdio --enable-kvm no --enable-kvm no -m guest os will oops (out of memory) during guest os boot no --enable-kvm has -m 1024 guest os will block during guest os boot has --enable-kvm no -m guest os will block during guest os boot has --enable-kvm has -m 1024 run normally Regards, Wanpeng Li