QOSState *qtest_vboot(QOSOps *ops, const char *cmdline_fmt, va_list ap);
QOSState *qtest_boot(QOSOps *ops, const char *cmdline_fmt, ...);
QOSState *qtest_vboot(QOSOps *ops, const char *cmdline_fmt, va_list ap);
QOSState *qtest_boot(QOSOps *ops, const char *cmdline_fmt, ...);