crosvm: Make ballooning a compile time feature

Balloon support can not be compiled out, and don't need to be
disabled at run time.

BUG=b:235887451
TEST=Guest has balloon device by default, does not have balloon
device when disabled. Ballooning via cli functions by default,
return not supported when running vm has ballooning compiled out.

Change-Id: I737851496fe4c14cdbb69c48e6edf1ca9186c15a
Reviewed-on: https://chromium-review.googlesource.com/c/crosvm/crosvm/+/3786928
Tested-by: Zihan Chen <zihanchen@google.com>
Reviewed-by: Daniel Verkamp <dverkamp@chromium.org>
Commit-Queue: Zihan Chen <zihanchen@google.com>
10 files changed
tree: 61b03bf3e3d0f40540aaf24dea9b374615454926
  1. .cargo/
  2. .devcontainer/
  3. .github/
  4. aarch64/
  5. acpi_tables/
  6. anti_tamper/
  7. arch/
  8. argh_helpers/
  9. base/
  10. bin/
  11. bit_field/
  12. broker_ipc/
  13. ci/
  14. common/
  15. cros_async/
  16. crosvm-fuzz/
  17. crosvm_control/
  18. crosvm_plugin/
  19. devices/
  20. disk/
  21. docs/
  22. fuse/
  23. gpu_display/
  24. hypervisor/
  25. infra/
  26. integration_tests/
  27. io_uring/
  28. kernel_cmdline/
  29. kernel_loader/
  30. kvm/
  31. kvm_sys/
  32. libcras_stub/
  33. linux_input_sys/
  34. logo/
  35. media/
  36. metrics/
  37. net_sys/
  38. net_util/
  39. power_monitor/
  40. protos/
  41. qcow_utils/
  42. resources/
  43. rutabaga_gfx/
  44. seccomp/
  45. serde_keyvalue/
  46. src/
  47. system_api_stub/
  48. tests/
  49. third_party/
  50. tools/
  51. tpm2/
  52. tpm2-sys/
  53. tracing/
  54. tube_transporter/
  55. usb_sys/
  56. usb_util/
  57. vfio_sys/
  58. vhost/
  59. virtio_sys/
  60. vm_control/
  61. vm_memory/
  62. win_audio/
  63. win_util/
  64. x86_64/
  65. .dockerignore
  66. .gitignore
  67. .gitmodules
  68. .rustfmt.toml
  69. ARCHITECTURE.md
  70. Cargo.toml
  71. CONTRIBUTING.md
  72. LICENSE
  73. navbar.md
  74. OWNERS
  75. PRESUBMIT.cfg
  76. README.chromeos.md
  77. README.md
  78. run_tests
  79. rust-toolchain
  80. setup_cros_cargo.sh
  81. test_all
  82. 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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