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Mon, 2 Mar 2026 03:42:44 -0500 (EST) X-Mailer: MessagingEngine.com Webmail Interface Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-ThreadId: AgePG58Eu4E- Date: Mon, 02 Mar 2026 09:42:24 +0100 From: "Arnd Bergmann" To: =?UTF-8?Q?Thomas_Wei=C3=9Fschuh?= , "David S . Miller" , "Andreas Larsson" , "Andy Lutomirski" , "Thomas Gleixner" , "Ingo Molnar" , "Borislav Petkov" , "Dave Hansen" , x86@kernel.org, "H. Peter Anvin" , "Heiko Carstens" , "Vasily Gorbik" , "Alexander Gordeev" , "Christian Borntraeger" , "Sven Schnelle" , "Madhavan Srinivasan" , "Michael Ellerman" , "Nicholas Piggin" , "Christophe Leroy" Cc: sparclinux@vger.kernel.org, linux-kernel@vger.kernel.org, Linux-Arch , linux-s390@vger.kernel.org, "David Laight" , linuxppc-dev@lists.ozlabs.org Message-Id: <204f4051-4fdd-41c8-8bcd-cab7551474ea@app.fastmail.com> In-Reply-To: <20260302-vdso-compat-checkflags-v2-3-78e55baa58ba@linutronix.de> References: <20260302-vdso-compat-checkflags-v2-0-78e55baa58ba@linutronix.de> <20260302-vdso-compat-checkflags-v2-3-78e55baa58ba@linutronix.de> Subject: Re: [PATCH v2 3/5] s390: Add -m64 to KBUILD_CPPFLAGS Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable On Mon, Mar 2, 2026, at 08:58, Thomas Wei=C3=9Fschuh wrote: > Some non-code files, like linkescripts, are preprocessed with the C > preprocessor and make use of regular kernel headers. > As -m64 is not passed to those preprocessor invocations this leads > to an inconsistency between __BITS_PER_LONG and the C type 'long'. > An upcoming consistency check will be tripped by this. > > Make sure -m64 is also defined for those preprocessing steps. > > As KBUILD_CPPFLAGS is inherited by both KBUILD_AFLAGS and KBUILD_CFLAG= S, > drop -m64 from these variables. > > Signed-off-by: Thomas Wei=C3=9Fschuh Reviewed-by: Arnd Bergmann