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run_cvd manages backend programs internally for emulating virtual devices (e.g. for WiFi, secure devices, etc), after . For the rough understanding of the run_cvd’s internal, you could refer to below diagram:
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QEMU command
After the configurations for the virtual device’s emulation, it launches VMM (QEMU or Crosvm) to kick off virtual machine instance. Below is the compelete command parameters for the QEMU command:
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qemu-system-x86_64 -name guest=cvd-1,debug-threads=on -machine pc,nvdimm=on,accel=kvm,usb=off,dump-guest-core=off -m size=4096M,maxmem=4102M,slots=2 -overcommit mem-lock=off -smp 2,cores=2,threads=1 -uuid 699acfc4-c8c4-11e7-882b-5065f31dc101 -no-user-config -nodefaults -no-shutdown -rtc base=utc -boot strict=on -chardev socket,id=charmonitor,path=/tmp/cf_avd_1000/cvd-1/internal/qemu_monitor.sock,server=on,wait=off -mon chardev=charmonitor,id=monitor,mode=control -display egl-headless -vnc 127.0.0.1:544 -device pcie-pci-bridge,id=hvc-bridge,addr=01.2 -device virtio-gpu-gl-pci,id=gpu0,xres=720,yres=1280 -chardev file,id=serial0,path=/home/leoy/Dev2/aosp_cuttlefish_test/cf/cuttlefish/instances/cvd-1/internal/kernel-log-pipe,append=on -serial chardev:serial0 -chardev file,id=hvc0,path=/home/leoy/Dev2/aosp_cuttlefish_test/cf/cuttlefish/instances/cvd-1/internal/kernel-log-pipe,append=on -device virtio-serial-pci-non-transitional,max_ports=1,id=virtio-serial0,bus=hvc-bridge,addr=01 -device virtconsole,bus=virtio-serial0.0,chardev=hvc0 -chardev null,id=hvc1 -device virtio-serial-pci-non-transitional,max_ports=1,id=virtio-serial1,bus=hvc-bridge,addr=02 -device virtconsole,bus=virtio-serial1.0,chardev=hvc1 -chardev file,id=hvc2,path=/home/leoy/Dev2/aosp_cuttlefish_test/cf/cuttlefish/instances/cvd-1/internal/logcat-pipe,append=on -device virtio-serial-pci-non-transitional,max_ports=1,id=virtio-serial2,bus=hvc-bridge,addr=03 -device virtconsole,bus=virtio-serial2.0,chardev=hvc2 -chardev pipe,id=hvc3,path=/home/leoy/Dev2/aosp_cuttlefish_test/cf/cuttlefish/instances/cvd-1/internal/keymaster_fifo_vm -device virtio-serial-pci-non-transitional,max_ports=1,id=virtio-serial3,bus=hvc-bridge,addr=04 -device virtconsole,bus=virtio-serial3.0,chardev=hvc3 -chardev pipe,id=hvc4,path=/home/leoy/Dev2/aosp_cuttlefish_test/cf/cuttlefish/instances/cvd-1/internal/gatekeeper_fifo_vm -device virtio-serial-pci-non-transitional,max_ports=1,id=virtio-serial4,bus=hvc-bridge,addr=05 -device virtconsole,bus=virtio-serial4.0,chardev=hvc4 -chardev pipe,id=hvc5,path=/home/leoy/Dev2/aosp_cuttlefish_test/cf/cuttlefish/instances/cvd-1/internal/bt_fifo_vm -device virtio-serial-pci-non-transitional,max_ports=1,id=virtio-serial5,bus=hvc-bridge,addr=06 -device virtconsole,bus=virtio-serial5.0,chardev=hvc5 -chardev pipe,id=hvc6,path=/home/leoy/Dev2/aosp_cuttlefish_test/cf/cuttlefish/instances/cvd-1/internal/gnsshvc_fifo_vm -device virtio-serial-pci-non-transitional,max_ports=1,id=virtio-serial6,bus=hvc-bridge,addr=07 -device virtconsole,bus=virtio-serial6.0,chardev=hvc6 -chardev pipe,id=hvc7,path=/home/leoy/Dev2/aosp_cuttlefish_test/cf/cuttlefish/instances/cvd-1/internal/locationhvc_fifo_vm -device virtio-serial-pci-non-transitional,max_ports=1,id=virtio-serial7,bus=hvc-bridge,addr=08 -device virtconsole,bus=virtio-serial7.0,chardev=hvc7 -chardev null,id=hvc8 -device virtio-serial-pci-non-transitional,max_ports=1,id=virtio-serial8,bus=hvc-bridge,addr=09 -device virtconsole,bus=virtio-serial8.0,chardev=hvc8 -chardev pipe,id=hvc9,path=/home/leoy/Dev2/aosp_cuttlefish_test/cf/cuttlefish/instances/cvd-1/internal/uwb_fifo_vm -device virtio-serial-pci-non-transitional,max_ports=1,id=virtio-serial9,bus=hvc-bridge,addr=0a -device virtconsole,bus=virtio-serial9.0,chardev=hvc9 -chardev pipe,id=hvc10,path=/home/leoy/Dev2/aosp_cuttlefish_test/cf/cuttlefish/instances/cvd-1/internal/oemlock_fifo_vm -device virtio-serial-pci-non-transitional,max_ports=1,id=virtio-serial10,bus=hvc-bridge,addr=0b -device virtconsole,bus=virtio-serial10.0,chardev=hvc10 -chardev pipe,id=hvc11,path=/home/leoy/Dev2/aosp_cuttlefish_test/cf/cuttlefish/instances/cvd-1/internal/keymint_fifo_vm -device virtio-serial-pci-non-transitional,max_ports=1,id=virtio-serial11,bus=hvc-bridge,addr=0c -device virtconsole,bus=virtio-serial11.0,chardev=hvc11 -chardev pipe,id=hvc12,path=/home/leoy/Dev2/aosp_cuttlefish_test/cf/cuttlefish/instances/cvd-1/internal/nfc_fifo_vm -device virtio-serial-pci-non-transitional,max_ports=1,id=virtio-serial12,bus=hvc-bridge,addr=0d -device virtconsole,bus=virtio-serial12.0,chardev=hvc12 -chardev null,id=hvc13 -device virtio-serial-pci-non-transitional,max_ports=1,id=virtio-serial13,bus=hvc-bridge,addr=0e -device virtconsole,bus=virtio-serial13.0,chardev=hvc13 -chardev null,id=hvc14 -device virtio-serial-pci-non-transitional,max_ports=1,id=virtio-serial14,bus=hvc-bridge,addr=0f -device virtconsole,bus=virtio-serial14.0,chardev=hvc14 -chardev null,id=hvc15 -device virtio-serial-pci-non-transitional,max_ports=1,id=virtio-serial15,bus=hvc-bridge,addr=10 -device virtconsole,bus=virtio-serial15.0,chardev=hvc15 -drive file=/home/leoy/Dev2/aosp_cuttlefish_test/cf/cuttlefish/instances/cvd-1/overlay.img,if=none,id=drive-virtio-disk0,aio=threads -device virtio-blk-pci-non-transitional,scsi=off,drive=drive-virtio-disk0,id=virtio-disk0,bootindex=1 -drive file=/home/leoy/Dev2/aosp_cuttlefish_test/cf/cuttlefish/instances/cvd-1/persistent_composite_overlay.img,if=none,id=drive-virtio-disk1,aio=threads -device virtio-blk-pci-non-transitional,scsi=off,drive=drive-virtio-disk1,id=virtio-disk1 -drive file=/home/leoy/Dev2/aosp_cuttlefish_test/cf/cuttlefish/instances/cvd-1/sdcard_overlay.img,if=none,id=drive-virtio-disk2,aio=threads -device virtio-blk-pci-non-transitional,scsi=off,drive=drive-virtio-disk2,id=virtio-disk2 -object memory-backend-file,id=objpmem0,share=on,mem-path=/home/leoy/Dev2/aosp_cuttlefish_test/cf/cuttlefish/instances/cvd-1/pstore,size=2097152 -device nvdimm,memdev=objpmem0,id=ramoops -object memory-backend-file,id=objpmem1,share=on,mem-path=/home/leoy/Dev2/aosp_cuttlefish_test/cf/cuttlefish/instances/cvd-1/access-kregistry,size=2097152 -device virtio-pmem-pci,disable-legacy=on,memdev=objpmem1,id=pmem0 -object memory-backend-file,id=objpmem2,share=on,mem-path=/home/leoy/Dev2/aosp_cuttlefish_test/cf/cuttlefish/instances/cvd-1/hwcomposer-pmem,size=2097152 -device virtio-pmem-pci,disable-legacy=on,memdev=objpmem2,id=pmem1 -object rng-random,id=objrng0,filename=/dev/urandom -device virtio-rng-pci-non-transitional,rng=objrng0,id=rng0,max-bytes=1024,period=2000 -device virtio-mouse-pci,disable-legacy=on -device virtio-keyboard-pci,disable-legacy=on -device virtio-keyboard-pci,disable-legacy=on -device virtio-balloon-pci-non-transitional,id=balloon0 -netdev tap,id=hostnet0,ifname=cvd-mtap-01,script=no,downscript=no -netdev tap,id=hostnet1,ifname=cvd-etap-01,script=no,downscript=no -device virtio-net-pci-non-transitional,netdev=hostnet0,id=net0,mac=00:1a:11:e0:cf:00 -device virtio-net-pci-non-transitional,netdev=hostnet1,id=net1,mac=00:1a:11:e1:cf:00 -cpu host -msg timestamp=on -device vhost-vsock-pci-non-transitional,guest-cid=3 -device AC97,audiodev=audio_none -audiodev driver=none,id=audio_none -device qemu-xhci,id=xhci -bios /home/leoy/Dev2/aosp_cuttlefish_test/cf/etc/bootloader_x86_64/bootloader.qemu |