qemu-system-x86_64  run win7 qcow2 got an exception
Description of problem:
when qemu-system-X86-64 run the win7 qcow2,  qemu got an exception

\*\* ERROR:../target/i386/tcg/sysemu/excp_helper.c:517:raise_stage2: code should not be reached Aborted (核心已转储)