el7上编译
git clone git://git.qemu-project.org/qemu.git
./configure --target-list=x86_64-softmmu --cpu=x86_64 --enable-kvm --disable-werror --disable-fdt
sudo yum install pixman-devel
make -j 20
qemu/qemu/qemu-img create -f qcow2 vm.img 10G
qemu/qemu/x86_64-softmmu/qemu-system-x86_64 -serial mon:stdio --nographic -enable-kvm -hda ./vm.img -boot d -cdrom ./Fedora-Server-dvd-x86_64-25-1.3.iso
qemu-system-x86_64 -m 2048 -enable-kvm --nographic fedora.img -cdrom ./Fedora-Live-Desktop-x86_64-20-1.iso