linux-kernel - Re: [PATCH] kunit: fixes Compilation error on s390

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Message-ID: <20250331093341.25223A5a-hca@linux.ibm.com>
Date: Mon, 31 Mar 2025 11:33:41 +0200
From: Heiko Carstens <hca@...ux.ibm.com>
To: Alessandro Carminati <acarmina@...hat.com>
Cc: linux-kselftest@...r.kernel.org, Dan Carpenter <dan.carpenter@...aro.org>,
        Daniel Diaz <daniel.diaz@...aro.org>, David Gow <davidgow@...gle.com>,
        Arthur Grillo <arthurgrillo@...eup.net>,
        Brendan Higgins <brendan.higgins@...ux.dev>,
        Naresh Kamboju <naresh.kamboju@...aro.org>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Maxime Ripard <mripard@...nel.org>,
        Ville Syrjala <ville.syrjala@...ux.intel.com>,
        Daniel Vetter <daniel@...ll.ch>, Guenter Roeck <linux@...ck-us.net>,
        Alessandro Carminati <alessandro.carminati@...il.com>,
        Jani Nikula <jani.nikula@...el.com>,
        Shuah Khan <skhan@...uxfoundation.org>,
        Mickael Salaun <mic@...ikod.net>, Kees Cook <kees@...nel.org>,
        Stephen Rothwell <sfr@...b.auug.org.au>,
        dri-devel@...ts.freedesktop.org, kunit-dev@...glegroups.com,
        linux-arch@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-s390@...r.kernel.org, linux-next@...r.kernel.org,
        Vasily Gorbik <gor@...ux.ibm.com>,
        Alexander Gordeev <agordeev@...ux.ibm.com>
Subject: Re: [PATCH] kunit: fixes Compilation error on s390

On Sat, Mar 29, 2025 at 03:03:20PM +0000, Alessandro Carminati wrote:
> The current implementation of suppressing warning backtraces uses __func__,
> which is a compile-time constant only for non -fPIC compilation.
> GCC's support for this situation in position-independent code varies across
> versions and architectures.
> 
> On the s390 architecture, -fPIC is required for compilation, and support
> for this scenario is available in GCC 11 and later.
> 
> Fixes:  d8b14a2 ("bug/kunit: core support for suppressing warning backtraces")
> 
> Signed-off-by: Alessandro Carminati <acarmina@...hat.com>
> ---
>  lib/kunit/Kconfig | 1 +
>  1 file changed, 1 insertion(+)

Acked-by: Heiko Carstens <hca@...ux.ibm.com>