Re: [PATCH 1/2] tests/docker: gcc-10 based images for ppc64{, le} tests

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

David Gibson <david@gibson.dropbear.id.au> writes:

> On Mon, Apr 19, 2021 at 10:33:07PM -0300, matheus.ferst@eldorado.org.br wrote:
>> From: Matheus Ferst <matheus.ferst@eldorado.org.br>
>> 
>> A newer compiler is needed to build tests for Power10 instructions. As
>> done for arm64 on c729a99d2701, a new '-test-cross' image is created for
>> ppc64 and ppc64le. As done on 936fda4d771f, a test for compiler support
>> is added to verify that the toolchain in use has '-mpower10'.
>> 
>> Signed-off-by: Matheus Ferst <matheus.ferst@eldorado.org.br>
>> ---
>>  tests/docker/Makefile.include                   |  2 ++
>>  .../debian-powerpc-test-cross.docker            | 17 +++++++++++++++++
>>  tests/tcg/configure.sh                          | 12 ++++++++----
>>  3 files changed, 27 insertions(+), 4 deletions(-)
>>  create mode 100644 tests/docker/dockerfiles/debian-powerpc-test-cross.docker
>> 
>> diff --git a/tests/docker/Makefile.include b/tests/docker/Makefile.include
>> index 9f464cb92c..f1dbcc639f 100644
>> --- a/tests/docker/Makefile.include
>> +++ b/tests/docker/Makefile.include
>> @@ -152,10 +152,12 @@ docker-image-debian-sparc64-cross: docker-image-debian10
>>  docker-image-debian-tricore-cross: docker-image-debian10
>>  docker-image-debian-all-test-cross: docker-image-debian10
>>  docker-image-debian-arm64-test-cross: docker-image-debian11
>> +docker-image-debian-power-test-cross: docker-image-debian11
>>  
>>  # These images may be good enough for building tests but not for test builds
>>  DOCKER_PARTIAL_IMAGES += debian-alpha-cross
>>  DOCKER_PARTIAL_IMAGES += debian-arm64-test-cross
>> +DOCKER_PARTIAL_IMAGES += debian-power-test-cross
>
> You add these "power" (as opposed to "powerpc" or "ppc64" or whatever)
> images here, but they don't seem to be referenced anywhere else.
>
>>  DOCKER_PARTIAL_IMAGES += debian-hppa-cross
>>  DOCKER_PARTIAL_IMAGES += debian-m68k-cross debian-mips64-cross
>>  DOCKER_PARTIAL_IMAGES += debian-powerpc-cross debian-ppc64-cross

I was expecting the new debian-power-test-cross to replace both
debian-powerpc-cross and debian-ppc64-cross.

>> diff --git a/tests/docker/dockerfiles/debian-powerpc-test-cross.docker b/tests/docker/dockerfiles/debian-powerpc-test-cross.docker
>> new file mode 100644
>> index 0000000000..36b336f709
>> --- /dev/null
>> +++ b/tests/docker/dockerfiles/debian-powerpc-test-cross.docker
>> @@ -0,0 +1,17 @@
>> +#
>> +# Docker powerpc/ppc64/ppc64le cross-compiler target
>> +#
>> +# This docker target builds on the debian Bullseye base image.
>> +#
>> +FROM qemu/debian11
>> +
>> +RUN apt update && \
>> +    DEBIAN_FRONTEND=noninteractive eatmydata \
>> +    apt install -y --no-install-recommends \
>> +        gcc-powerpc-linux-gnu \
>> +        libc6-dev-powerpc-cross \
>> +        gcc-10-powerpc64-linux-gnu \
>> +        libc6-dev-ppc64-cross \
>> +        gcc-10-powerpc64le-linux-gnu \
>> +        libc6-dev-ppc64el-cross
>
> I'm not really clear on what distinguishes a -cross.docker image and a
> -test-cross.docker image.

The normal cross image (debian-ppc64le-cross) can cross build QEMU. The
-test-cross images are just used for building check-tcg test cases.

>
>> diff --git a/tests/tcg/configure.sh b/tests/tcg/configure.sh
>> index fa1a4261a4..a0be066499 100755
>> --- a/tests/tcg/configure.sh
>> +++ b/tests/tcg/configure.sh
>> @@ -170,13 +170,13 @@ for target in $target_list; do
>>        ;;
>>      ppc64-*)
>>        container_hosts=x86_64
>> -      container_image=debian-ppc64-cross
>> -      container_cross_cc=powerpc64-linux-gnu-gcc
>> +      container_image=debian-powerpc-test-cross
>> +      container_cross_cc=powerpc64-linux-gnu-gcc-10
>>        ;;
>>      ppc64le-*)
>>        container_hosts=x86_64
>> -      container_image=debian-ppc64el-cross
>> -      container_cross_cc=powerpc64le-linux-gnu-gcc
>> +      container_image=debian-powerpc-test-cross
>> +      container_cross_cc=powerpc64le-linux-gnu-gcc-10
>
> Doesn't this remove all uses of the debian-pp64-cross and

Yes this should be removed.

> debian-ppc64el-cross images, in which case you could remove the
> matching docker files and so forth too, no?

Well I assume you still want to check cross building of QEMU. Arguably
we could still use that for the test cases as well.

>
>>        ;;
>>      riscv64-*)
>>        container_hosts=x86_64
>> @@ -280,6 +280,10 @@ for target in $target_list; do
>>                 -mpower8-vector -o $TMPE $TMPC; then
>>                  echo "CROSS_CC_HAS_POWER8_VECTOR=y" >> $config_target_mak
>>              fi
>> +            if do_compiler "$target_compiler" $target_compiler_cflags \
>> +               -mpower10 -o $TMPE $TMPC; then
>> +                echo "CROSS_CC_HAS_POWER10=y" >> $config_target_mak
>> +            fi
>>          ;;
>>          i386-linux-user)
>>              if do_compiler "$target_compiler" $target_compiler_cflags \


-- 
Alex Bennée