Re: [PATCH v2] tests/functional: test device passthrough on aarch64

[Pierrick Bouvier <pierrick.bouvier@linaro.org>]

On 6/27/25 1:02 PM, Pierrick Bouvier wrote:
> This test allows to document and exercise device passthrough, using a
> nested virtual machine setup. Two disks are generated and passed to the
> VM, and their content is compared to original images.
> 
> Guest and nested guests commands are executed through two scripts, and
> init used in both system is configured to trigger a kernel panic in case
> any command fails. This is more reliable and readable than executing all
> commands through prompt injection and trying to guess what failed.
> 
> Initially, this test was supposed to test smmuv3 nested emulation
> (combining both stages of translation), but I could not find any setup
> (kernel + vmm) able to do the passthrough correctly, despite several
> tries.
> 
> Signed-off-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
> ---
>   tests/functional/meson.build                  |   2 +
>   .../test_aarch64_device_passthrough.py        | 142 ++++++++++++++++++
>   2 files changed, 144 insertions(+)
>   create mode 100755 tests/functional/test_aarch64_device_passthrough.py
>

v2
--

- remove debug trace left my mistake (" || bash")
- minimized asset size (180MB -> 40MB)

Regards,
Pierrick