linux-kernel - Re: [PATCH 1/2] kunit: tool: Add x86_64-smp architecture for SMP testing

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Message-ID: <CAFd5g44i2rQf8KVPc00bZzMx5zPtjoxesqyTd1aawVc10-0kyw@mail.gmail.com>
Date:   Wed, 6 Jul 2022 15:44:38 -0400
From:   Brendan Higgins <brendanhiggins@...gle.com>
To:     David Gow <davidgow@...gle.com>
Cc:     Daniel Latypov <dlatypov@...gle.com>,
        Marco Elver <elver@...gle.com>,
        Shuah Khan <skhan@...uxfoundation.org>,
        Dmitry Vyukov <dvyukov@...gle.com>, kunit-dev@...glegroups.com,
        kasan-dev@...glegroups.com, linux-kselftest@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH 1/2] kunit: tool: Add x86_64-smp architecture for SMP testing

On Wed, May 18, 2022 at 3:32 AM 'David Gow' via KUnit Development
<kunit-dev@...glegroups.com> wrote:
>
> Add a new QEMU config for kunit_tool, x86_64-smp, which provides an
> 8-cpu SMP setup. No other kunit_tool configurations provide an SMP
> setup, so this is the best bet for testing things like KCSAN, which
> require a multicore/multi-cpu system.
>
> The choice of 8 CPUs is pretty arbitrary: it's enough to get tests like
> KCSAN to run with a nontrivial number of worker threads, while still
> working relatively quickly on older machines.
>
> Signed-off-by: David Gow <davidgow@...gle.com>

I know there is some discussion on this patch, but I think this patch
is good as implemented; we could always delete this config if we
change our policies later.

Reviewed-by: Brendan Higgins <brendanhiggins@...gle.com>