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Re: [PATCH for-4.17] CI: Force CONFIG_XEN_IBT in the buster-gcc-ibt test



On Mon, Sep 26, 2022 at 02:02:13PM +0100, Andrew Cooper wrote:
> buster-gcc-ibt is a dedicated test to run a not-yet-upstreamed compiler patch
> which is relevant to CONFIG_XEN_IBT in 4.17 and later.
> 
> Force it on, rather than having 50% of the jobs not testing what they're
> supposed to be testing.

Shouldn't this job be with a static (or rather: all yes) config?

> Fixes: 5d59421815d5 ("x86: Use control flow typechecking where possible")
> Signed-off-by: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
> ---
> CC: Doug Goldstein <cardoe@xxxxxxxxxx>
> CC: Stefano Stabellini <sstabellini@xxxxxxxxxx>
> CC: Henry Wang <Henry.Wang@xxxxxxx>
> 
> For 4.17: This is bugfix to CI only, to avoid it producing a false negative.
> Currently, the test intermittently fails to spot the error it was intended to
> identify.  It is very low risk as far as the 4.17 release goes.
> 
> https://gitlab.com/xen-project/people/andyhhp/xen/-/jobs/3084774561#L373 for
> proof that CONFIG_XEN_IBT=y is being fed into allrandom.config
> ---
>  automation/gitlab-ci/build.yaml | 2 ++
>  automation/scripts/build        | 5 +++++
>  2 files changed, 7 insertions(+)
> 
> diff --git a/automation/gitlab-ci/build.yaml b/automation/gitlab-ci/build.yaml
> index 720ce6e07ba0..65e06c858ef3 100644
> --- a/automation/gitlab-ci/build.yaml
> +++ b/automation/gitlab-ci/build.yaml
> @@ -299,6 +299,8 @@ debian-buster-gcc-ibt:
>    variables:
>      CONTAINER: debian:buster-gcc-ibt
>      RANDCONFIG: y
> +    EXTRA_FIXED_RANDCONFIG: |
> +      CONFIG_XEN_IBT=y
>  
>  debian-unstable-clang:
>    extends: .clang-x86-64-build
> diff --git a/automation/scripts/build b/automation/scripts/build
> index 2f15ab3198e6..2d9dd86df904 100755
> --- a/automation/scripts/build
> +++ b/automation/scripts/build
> @@ -12,6 +12,11 @@ cc-ver()
>  
>  # random config or default config
>  if [[ "${RANDCONFIG}" == "y" ]]; then
> +
> +    # Append job-specific fixed configuration
> +    [[ -n "${EXTRA_FIXED_RANDCONFIG}" ]] &&
> +        echo "${EXTRA_FIXED_RANDCONFIG}" >> 
> xen/tools/kconfig/allrandom.config
> +
>      make -j$(nproc) -C xen KCONFIG_ALLCONFIG=tools/kconfig/allrandom.config 
> randconfig
>      hypervisor_only="y"
>  else
> -- 
> 2.11.0
> 
> 

-- 
Best Regards,
Marek Marczykowski-Górecki
Invisible Things Lab

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