We prohibit -device foo for non-pluggable devices: $ ./build/all/x86_64-softmmu/qemu-system-x86_64 -device i8257 qemu-system-x86_64: -device i8257: Parameter 'driver' expects pluggable device type
And we suppress them from "-device help" output too. But we still allow the user to do this: $ ./build/all/x86_64-softmmu/qemu-system-x86_64 -device i8257,help i8257 options: dshift=<int32> base=<int32> pageh-base=<int32> page-base=<int32> Does anybody know how best to fix this? I guess we want to check dc->user_creatable in qdev_device_help() and print "%s is not a pluggable device" or something similar instead ? (The output is particularly useless for some devices, eg $ ./build/all/arm-softmmu/qemu-system-arm -M virt -device iotkit,help iotkit options: ppc-irq-splitter-5=<child<split-irq>> nswatchdog=<child<cmsdk-apb-watchdog>> iotkit-sysinfo=<child<iotkit-sysinfo>> sec-resp-splitter=<child<split-irq>> ppc-irq-splitter-6=<child<split-irq>> mpc-irq-splitter-16=<child<split-irq>> memory=<link<qemu:memory-region>> mpc=<child<tz-mpc>> dualtimer=<child<cmsdk-apb-dualtimer>> ppc-irq-splitter-9=<child<split-irq>> ppc-irq-splitter-8=<child<split-irq>> ppc-irq-splitter-7=<child<split-irq>> mpc-irq-splitter-6=<child<split-irq>> ppc-irq-splitter-4=<child<split-irq>> iotkit-container[0]=<child<qemu:memory-region>> s32kwatchdog=<child<cmsdk-apb-watchdog>> mpc-irq-splitter-5=<child<split-irq>> iotkit-sysctl=<child<iotkit-sysctl>> EXP_NUMIRQ=<uint32> MAINCLK=<uint32> mpc-irq-orgate=<child<or-irq>> mpc-irq-splitter-9=<child<split-irq>> mpc-irq-splitter-8=<child<split-irq>> mpc-irq-splitter-7=<child<split-irq>> mpc-irq-splitter-4=<child<split-irq>> mpc-irq-splitter-2=<child<split-irq>> mpc-irq-splitter-1=<child<split-irq>> mpc-irq-splitter-3=<child<split-irq>> apb-ppc1=<child<tz-ppc>> apb-ppc0=<child<tz-ppc>> mpc-irq-splitter-0=<child<split-irq>> mpc-irq-splitter-15=<child<split-irq>> mpc-irq-splitter-14=<child<split-irq>> mpc-irq-splitter-13=<child<split-irq>> mpc-irq-splitter-12=<child<split-irq>> mpc-irq-splitter-11=<child<split-irq>> mpc-irq-splitter-10=<child<split-irq>> ppc-irq-splitter-3=<child<split-irq>> ppc-irq-splitter-2=<child<split-irq>> ppc-irq-splitter-1=<child<split-irq>> swatchdog=<child<cmsdk-apb-watchdog>> nmi-orgate=<child<or-irq>> s32ktimer=<child<cmsdk-apb-timer>> ppc-irq-splitter-0=<child<split-irq>> timer1=<child<cmsdk-apb-timer>> timer0=<child<cmsdk-apb-timer>> secctl=<child<iotkit-secctl>> armv7m=<child<armv7m>> ppc-irq-orgate=<child<or-irq>> where the properties are all intended to be set up by QEMU code, not by a user.) thanks -- PMM
