Google Git
Sign in
android / platform / external / crosvm / 22c212d54f1fc7c9854084ffaa697b7890a14b0a
commit22c212d54f1fc7c9854084ffaa697b7890a14b0a[log] [tgz]
authorDavid Stevens <stevensd@chromium.org>Thu Apr 06 19:30:38 2023 +0900
committercrosvm LUCI <crosvm-scoped@luci-project-accounts.iam.gserviceaccount.com>Tue Apr 11 00:58:43 2023 +0000
tree3422086f7fb231f83662f62e0c45d545f49a4782
parent57b5eca18269278fca9007dfa4976638bca49537 [diff]
vm_control: reduce user memory region modifications

Reduce how often KVM_SET_USER_MEMORY_REGION is called when the tdp mmu
is enabled. With the tdp mmu, there is no memory overhead from creating
large memory regions (at least until a nested VM is started). Simply
mmap'ing/munmap'ing fds within a pre-created memory region is more
efficient. It also addresses audio jank caused by removing a memory
region.

Adding this support to VmMemoryRequest will allow FsMappingRequest to be
removed in a later change.

BUG=b:274037632
TEST=tast run arc.Boot.vm
TEST=manually launch gedit in crostini

Change-Id: I2ac02454ecb734c9707b6d67546135134b887527
Reviewed-on: https://chromium-review.googlesource.com/c/crosvm/crosvm/+/4402068
Reviewed-by: Dennis Kempin <denniskempin@google.com>
Reviewed-by: Daniel Verkamp <dverkamp@chromium.org>
Commit-Queue: David Stevens <stevensd@chromium.org>
11 files changed
tree: 3422086f7fb231f83662f62e0c45d545f49a4782
  1. .cargo/
  2. .config/
  3. .devcontainer/
  4. .github/
  5. .vscode/
  6. aarch64/
  7. acpi_tables/
  8. anti_tamper/
  9. arch/
  10. argh_helpers/
  11. audio_util/
  12. base/
  13. bit_field/
  14. broker_ipc/
  15. common/
  16. crash_report/
  17. cros_async/
  18. cros_fdt/
  19. cros_tracing/
  20. crosvm-fuzz/
  21. crosvm_cli/
  22. crosvm_control/
  23. crosvm_plugin/
  24. devices/
  25. disk/
  26. docs/
  27. e2e_tests/
  28. fuse/
  29. gpu_display/
  30. hypervisor/
  31. infra/
  32. io_uring/
  33. jail/
  34. kernel_cmdline/
  35. kernel_loader/
  36. kvm/
  37. kvm_sys/
  38. libcras_stub/
  39. linux_input_sys/
  40. logo/
  41. media/
  42. metrics/
  43. net_sys/
  44. net_util/
  45. power_monitor/
  46. prebuilts/
  47. proto_build_tools/
  48. protos/
  49. qcow_utils/
  50. resources/
  51. rutabaga_gfx/
  52. sandbox/
  53. serde_keyvalue/
  54. src/
  55. swap/
  56. system_api/
  57. tests/
  58. third_party/
  59. tools/
  60. tpm2/
  61. tpm2-sys/
  62. tube_transporter/
  63. usb_sys/
  64. usb_util/
  65. vfio_sys/
  66. vhost/
  67. virtio_sys/
  68. vm_control/
  69. vm_memory/
  70. win_audio/
  71. win_util/
  72. x86_64/
  73. .dockerignore
  74. .envrc
  75. .gitignore
  76. .gitmodules
  77. .rustfmt.toml
  78. ARCHITECTURE.md
  79. Cargo.lock
  80. Cargo.toml
  81. CONTRIBUTING.md
  82. DIR_METADATA
  83. LICENSE
  84. mypy.ini
  85. OWNERS
  86. OWNERS_COUNCIL
  87. PRESUBMIT.cfg
  88. pyproject.toml
  89. README.chromeos.md
  90. README.md
  91. rust-toolchain
README.md

crosvm - The ChromeOS 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 ChromeOS 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 ChromeOS devices.

Logo