Re: [Qemu-devel] [RFC PATCH 0/4] Clean up TCG tests

["Alex Bennée" <alex.bennee@linaro.org>]

Peter Maydell <peter.maydell@linaro.org> writes:

> On 21 August 2016 at 04:46, Pranith Kumar <bobby.prani@gmail.com> wrote:
>> The tests currently fail, so I didn't think it would be appropriate to
>> hook them up.  If the rearrangement is acceptable and once I fix the
>> tests, I will hook up 'make check' to run these tests.
>
> So the question is: how will this work on systems which
> don't have the relevant compiler toolchain for the target?
> This has always been the stumbling block for tests which
> want to run guest code: it's just too much of a pain for
> most developers to have the toolchains available to build
> the guest code.

We could just make running the tests optional on ./configure finding the
relevant cross compilers. The misc/ tests at the very least can be built
with the host compiler and run on a host-to-host linux-user build.

>
> I have a vague idea that we could use something involving
> docker images so that you could define a test case including
> what the toolchain it needed to build was, and then have
> images so that in practice you could just use prebuilt
> binaries for the test blobs. But I haven't really thought
> much about it yet.

Currently the docker support doesn't allow copying artefacts from the
build. But you can certainly run a make target in a (potentially)
cross arch docker container now. For example:

  make docker-test-quick@debian-bootstrap \
    EXTRA_CONFIGURE_OPTS="--enable-gprof --enable-gcov --disable-pie" \
    J=9 V=1 DEBUG=1

If we fix up make test to build misc + host compiler directory then they
will get run by the binfmt_misc enabled linux-user binary that was
copied when the image was created. You can update the image with the
current image easily enough:

  ./tests/docker/docker.py update qmu:debian-bootstrap ./arm-linux-user/qemu-arm

>
> thanks
> -- PMM


--
Alex Bennée