WIP Add support for Gramine-TDX

[dimakuv]

Description of the changes

This is Work In Progress, adding support for https://github.com/gramineproject/gramine-tdx

Currently only Gramine-VM. I'll update with Gramine-TDX in the next iteration. Need to think how to automatically start socat for virtio-vsock networking.

How to test this PR?

README is updated with instructions.

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This change is 

[dimakuv]

Reviewable status: 0 of 6 files reviewed, 2 unresolved discussions, not enough approvals from maintainers (2 more required), not enough approvals from different teams (1 more required, approved so far: Intel), "WIP" found in commit messages' one-liners

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templates/apploader.common.template line 21 at r1 (raw file):

    exec gramine-vm /gramine/app_files/entrypoint \
        {% if insecure_args %}{{ binary_arguments | map('shlex_quote') | join(' ') }} \
        "${@}"{% endif %}

Maybe this should go into another PR that changes GSC_PAL to something more adequate, like GSC_GRAMINE_BINARY which is equal to gramine-sgx, gramine-direct, ...

In this case, this apploader script will end up as a simple:

exec ${GSC_GRAMINE_BINARY:-gramine-sgx} /gramine/app_files/entrypoint \
    {% if insecure_args %}{{ binary_arguments | map('shlex_quote') | join(' ') }} \
    "${@}"{% endif %}

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templates/debian/Dockerfile.build.template line 46 at r1 (raw file):

    && rm -rf /var/lib/apt/lists/*

RUN ln -s /usr/bin/qemu-system-x86_64 /usr/local/bin/qemu

FYI: This is purely for convenience (to be able to type qemu inside the container). Maybe I should add a comment about this.

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test/README.rst line 73 at r1 (raw file):

  memory. However, Docker containers start with 64MB by default. Thus, we need
  to explicitly specify the shared memory limit. ``4G`` is just an example; this
  limit depends on the app running inside Gramine-TDX.

--shm-size was painful to debug, so here are some references for history:

• https://gist.github.com/mcastelino/b31f0648707b25478eb2a44f94a861fd
• Hit by size limit of /dev/shm docker-library/postgres#416
• https://docs.docker.com/engine/reference/run/#runtime-constraints-on-resources

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test/ubuntu22.04-hello-world.dockerfile line 1 at r1 (raw file):

FROM ubuntu:22.04

The two test/ files probably should go in a separate PR that updates our GSC tests.

[dimakuv]

Reviewable status: 0 of 6 files reviewed, 2 unresolved discussions, not enough approvals from maintainers (2 more required), not enough approvals from different teams (1 more required, approved so far: Intel), "WIP" found in commit messages' one-liners (waiting on @dimakuv)

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test/ubuntu22.04-hello-world.dockerfile line 1 at r1 (raw file):

Previously, dimakuv (Dmitrii Kuvaiskii) wrote…

The two test/ files probably should go in a separate PR that updates our GSC tests.

Done, split into #200.

Will need to rebase after #200 is merged.

[dimakuv]

Reviewable status: 0 of 6 files reviewed, 2 unresolved discussions, not enough approvals from maintainers (2 more required), not enough approvals from different teams (1 more required, approved so far: Intel), "WIP" found in commit messages' one-liners

---

templates/apploader.common.template line 21 at r1 (raw file):

Previously, dimakuv (Dmitrii Kuvaiskii) wrote…

Maybe this should go into another PR that changes GSC_PAL to something more adequate, like GSC_GRAMINE_BINARY which is equal to gramine-sgx, gramine-direct, ...

In this case, this apploader script will end up as a simple:

exec ${GSC_GRAMINE_BINARY:-gramine-sgx} /gramine/app_files/entrypoint \
    {% if insecure_args %}{{ binary_arguments | map('shlex_quote') | join(' ') }} \
    "${@}"{% endif %}

Done, split into #201.

Will need to rebase after #201 is merged.

[dimakuv]

Reviewable status: 0 of 6 files reviewed, all discussions resolved, not enough approvals from maintainers (1 more required), not enough approvals from different teams (1 more required, approved so far: Intel), "WIP" found in commit messages' one-liners

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templates/apploader.common.template line 21 at r1 (raw file):

Previously, dimakuv (Dmitrii Kuvaiskii) wrote…

Done, split into #201.

Will need to rebase after #201 is merged.

Done

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test/ubuntu22.04-hello-world.dockerfile line 1 at r1 (raw file):

Previously, dimakuv (Dmitrii Kuvaiskii) wrote…

Done, split into #200.

Will need to rebase after #200 is merged.

Done