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gerrit-public.fairphone.software / platform / external / crosvm / 8764deb8dd0d3e60ac191c48f10c542c6dc9445b
commit8764deb8dd0d3e60ac191c48f10c542c6dc9445b[log] [tgz]
authorJunichi Uekawa <uekawa@google.com>Fri Jan 21 17:17:58 2022 +0900
committerCommit Bot <commit-bot@chromium.org>Thu Jan 27 02:29:32 2022 +0000
tree2da3ecfe9938d76495eefc9ca173cfc78cfd6c82
parent57d7eba0976a9519c2ab55055b77c1951dd16de2 [diff]
crosvm: Minimal change for manatee memory mapping.

Do not map RAM to where the coreboot regions are.

Shift boot time GDT and IDT a bit to make way for coreboot region at
0..fff.

BUG=b:188011323
TEST=boot volteer-manatee
TEST=tast run rammus-arc-r arc.Boot.vm  # ARCVM still boots.
TEST=tast run rammus-arc-r crostini.Basic.bullseye_stable

volteer-manatee memory map:

after:

localhost ~ # dmesg | grep e820
[    0.000000] BIOS-e820: [mem 0x0000000000000000-0x000000000009fbff] usable
[    0.000000] BIOS-e820: [mem 0x0000000000200000-0x00000000cfffffff] usable
[    0.000000] BIOS-e820: [mem 0x00000000f4000000-0x00000000f7ffffff] reserved
[    0.000000] BIOS-e820: [mem 0x0000000100000000-0x00000003f05fffff] usable

before:

localhost ~ # dmesg | grep e820
[    0.000000] BIOS-e820: [mem 0x0000000000001000-0x000000000009fbff] usable
[    0.000000] BIOS-e820: [mem 0x0000000000200000-0x000000005fffffff] usable
[    0.000000] BIOS-e820: [mem 0x00000000f4000000-0x00000000f7ffffff] reserved
[    0.000000] BIOS-e820: [mem 0x0000000100000000-0x0000000460600fff] usable

Change-Id: Ifa19988c444d79dc81eb77c59e5b5434abf883fb
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/crosvm/+/3405402
Reviewed-by: Daniel Verkamp <dverkamp@chromium.org>
Tested-by: kokoro <noreply+kokoro@google.com>
Commit-Queue: Junichi Uekawa <uekawa@chromium.org>
4 files changed
tree: 2da3ecfe9938d76495eefc9ca173cfc78cfd6c82
  1. .cargo/
  2. .devcontainer/
  3. .github/
  4. aarch64/
  5. acpi_tables/
  6. arch/
  7. bin/
  8. bit_field/
  9. ci/
  10. common/
  11. crosvm-fuzz/
  12. crosvm_control/
  13. crosvm_plugin/
  14. devices/
  15. disk/
  16. docs/
  17. fuse/
  18. gpu_display/
  19. hypervisor/
  20. integration_tests/
  21. kernel_cmdline/
  22. kernel_loader/
  23. kvm/
  24. kvm_sys/
  25. libcras_stub/
  26. libvda/
  27. linux_input_sys/
  28. logo/
  29. net_sys/
  30. net_util/
  31. power_monitor/
  32. protos/
  33. qcow_utils/
  34. resources/
  35. rutabaga_gfx/
  36. seccomp/
  37. src/
  38. system_api_stub/
  39. tests/
  40. third_party/
  41. tools/
  42. tpm2/
  43. tpm2-sys/
  44. usb_sys/
  45. usb_util/
  46. vfio_sys/
  47. vhost/
  48. virtio_sys/
  49. vm_control/
  50. vm_memory/
  51. x86_64/
  52. .dockerignore
  53. .gitignore
  54. .gitmodules
  55. .rustfmt.toml
  56. ARCHITECTURE.md
  57. Cargo.toml
  58. CONTRIBUTING.md
  59. LICENSE
  60. navbar.md
  61. OWNERS
  62. README.chromeos.md
  63. README.md
  64. run_tests
  65. rust-toolchain
  66. setup_cros_cargo.sh
  67. test_all
  68. 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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