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Frederick Mayle bc927456ad integration_tests: Simple backwards compatibility test 
The goal is to detect (possibly backwards imcompatible) changes to the
virtual hardware exposed to guests. To start with, it only checks the
PCI devices.

Example failure output when the iommu is removed:

    thread 'backcompat_test_simple_lspci' panicked at 'assertion failed: `(left == right)`
      left: `"00:00.0 0600: 8086:1237\n00:01.0 00ff: 1af4:1057 (rev 01)\n00:02.0 00ff: 1af4:1042 (rev 01)\n00:03.0 00ff: 1af4:1044 (rev 01)\n00:04.0 00ff: 1af4:1045 (rev 01)\n00:05.0 0c03: 1b73
    :1000\n00:06.0 ffff: 1b36:0011 (rev 01)\n00:07.0 0604: 8086:3420"`,
     right: `"00:00.0 0600: 8086:1237\n00:01.0 00ff: 1af4:1042 (rev 01)\n00:02.0 00ff: 1af4:1044 (rev 01)\n00:03.0 00ff: 1af4:1045 (rev 01)\n00:04.0 0c03: 1b73:1000\n00:05.0 ffff: 1b36:0011 (re
    v 01)\n00:06.0 0604: 8086:3420"`: PCI Devices changed:
    <<< Expected <<<
    00:00.0 0600: 8086:1237
    00:01.0 00ff: 1af4:1057 (rev 01)
    00:02.0 00ff: 1af4:1042 (rev 01)
    00:03.0 00ff: 1af4:1044 (rev 01)
    00:04.0 00ff: 1af4:1045 (rev 01)
    00:05.0 0c03: 1b73:1000
    00:06.0 ffff: 1b36:0011 (rev 01)
    00:07.0 0604: 8086:3420
    <<<<<<<<<<<<<<<<
    >>> Got      >>>
    00:00.0 0600: 8086:1237
    00:01.0 00ff: 1af4:1042 (rev 01)
    00:02.0 00ff: 1af4:1044 (rev 01)
    00:03.0 00ff: 1af4:1045 (rev 01)
    00:04.0 0c03: 1b73:1000
    00:05.0 ffff: 1b36:0011 (rev 01)
    00:06.0 0604: 8086:3420
    >>>>>>>>>>>>>>>>
    ', integration_tests/tests/backcompat.rs:21:5

    ... vm serial output ...

`pub mod` is used to avoid deadcode warnings. Changed boot.rs to do the
same for consistency and future proofing.

BUG=b:231365736
TEST=./integration_tests/run

Change-Id: Ia33d6631e3385ce3633cadff552a6253bb486f93
Reviewed-on: https://chromium-review.googlesource.com/c/crosvm/crosvm/+/3795888
Auto-Submit: Frederick Mayle <fmayle@google.com>
Reviewed-by: Daniel Verkamp <dverkamp@chromium.org>
Reviewed-by: David Stevens <stevensd@chromium.org>
Reviewed-by: Dennis Kempin <denniskempin@google.com>
Commit-Queue: Daniel Verkamp <dverkamp@chromium.org>
Tested-by: Frederick Mayle <fmayle@google.com>
2022-08-02 17:32:50 +00:00
..
guest_under_test Update cloud storage locations to use crosvm-infra project 2022-07-29 02:17:15 +00:00
tests integration_tests: Simple backwards compatibility test 2022-08-02 17:32:50 +00:00
Cargo.toml tools: Add crosvm-direct support for run_tests 2022-06-22 21:51:53 +00:00
README.md docs: Use mdformat to format markdown files 2022-01-27 21:29:11 +00:00
run tools: Add crosvm-direct support for run_tests 2022-06-22 21:51:53 +00:00

README.md

Crosvm Integration Tests

These tests run a crosvm VM on the host to verify end to end behavior. They use a prebuilt guest kernel and rootfs, which is downloaded from google cloud storage.

Running with locally built kernel/rootfs

If the test needs to run offline, or you want to make changes to the kernel or rootfs, you have to specify the environment variables CROSVM_CARGO_TEST_KERNEL_BINARY and CROSVM_CARGO_TEST_ROOTFS_IMAGE to point to the right files.

The use_local_build.sh script does this for you:

$ source guest_under_test/use_local_build.sh

Uploading prebuilts

Note: Only Googlers with access to the crosvm-testing cloud storage bin can upload prebuilts.

To upload the modified rootfs, you will have to uprev the PREBUILT_VERSION variable in:

  • ./guest_under_test/PREBUILT_VERSION
  • src/third_party/chromiumos-overlay/chromeos-base/crosvm/crosvm-9999.ebuild

Then run the upload script to build and upload the new prebuilts. Never try to modify an existing prebuilt as the new images may break tests in older versions.