devices: make virtio tpm backend pluggable

Split the creation of the software TPM emulator from the virtio-tpm
device so that other backends can be used with virtio-tpm.

BUG=b:227283268
TEST=cargo build --features=tpm

Change-Id: Ic1ebd2ebd49615201892afbf86cd5be68f6fde8c
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/crosvm/+/3213271
Reviewed-by: Dmitry Torokhov <dtor@chromium.org>
Tested-by: kokoro <noreply+kokoro@google.com>
Commit-Queue: Daniel Verkamp <dverkamp@chromium.org>
5 files changed
tree: 5360354b7ce6ffe5139311a3a65043fa419607d8
  1. .cargo/
  2. .devcontainer/
  3. .github/
  4. aarch64/
  5. acpi_tables/
  6. arch/
  7. base/
  8. bin/
  9. bit_field/
  10. ci/
  11. common/
  12. cros_async/
  13. crosvm-fuzz/
  14. crosvm_control/
  15. crosvm_plugin/
  16. devices/
  17. disk/
  18. docs/
  19. fuse/
  20. gpu_display/
  21. hypervisor/
  22. infra/
  23. integration_tests/
  24. io_uring/
  25. kernel_cmdline/
  26. kernel_loader/
  27. kvm/
  28. kvm_sys/
  29. libcras_stub/
  30. libvda/
  31. linux_input_sys/
  32. logo/
  33. net_sys/
  34. net_util/
  35. power_monitor/
  36. protos/
  37. qcow_utils/
  38. resources/
  39. rutabaga_gfx/
  40. seccomp/
  41. serde_keyvalue/
  42. src/
  43. system_api_stub/
  44. tests/
  45. third_party/
  46. tools/
  47. tpm2/
  48. tpm2-sys/
  49. usb_sys/
  50. usb_util/
  51. vfio_sys/
  52. vhost/
  53. virtio_sys/
  54. vm_control/
  55. vm_memory/
  56. win_util/
  57. x86_64/
  58. .dockerignore
  59. .gitignore
  60. .gitmodules
  61. .rustfmt.toml
  62. ARCHITECTURE.md
  63. Cargo.toml
  64. CONTRIBUTING.md
  65. LICENSE
  66. navbar.md
  67. OWNERS
  68. README.chromeos.md
  69. README.md
  70. run_tests
  71. rust-toolchain
  72. setup_cros_cargo.sh
  73. test_all
  74. unblocked_terms.txt
README.md

crosvm - The Chrome OS Virtual Machine Monitor

crosvm is a virtual machine monitor (VMM) based on Linux’s KVM hypervisor, with a focus on simplicity, security, and speed. crosvm is intended to run Linux guests, originally as a security boundary for running native applications on the Chrome OS platform. Compared to QEMU, crosvm doesn’t emulate architectures or real hardware, instead concentrating on paravirtualized devices, such as the virtio standard.

crosvm is currently used to run Linux/Android guests on Chrome OS devices.

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