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Fri, 16 Jan 2026 02:45:23 -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: A5KQZWxRIPew Date: Fri, 16 Jan 2026 08:45:02 +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" Cc: sparclinux@vger.kernel.org, linux-kernel@vger.kernel.org, Linux-Arch , linux-s390@vger.kernel.org Message-Id: <7827adb0-b2a8-4809-8f5e-859102600e02@app.fastmail.com> In-Reply-To: <20260116-vdso-compat-checkflags-v1-3-4a83b4fbb0d3@linutronix.de> References: <20260116-vdso-compat-checkflags-v1-0-4a83b4fbb0d3@linutronix.de> <20260116-vdso-compat-checkflags-v1-3-4a83b4fbb0d3@linutronix.de> Subject: Re: [PATCH 3/4] s390/vdso: Trim includes in linker script Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable On Fri, Jan 16, 2026, at 08:40, Thomas Wei=C3=9Fschuh wrote: > Some of the included files are unnecessary or too broad. > > This is a preparation for a new validation step to validate the > consistency of __BITS_PER_LONG. vdso.lds.S may be preprocessed with a > 32-bit compiler, but __BITS_PER_LONG is always 64. > > Trim the includes to the necessary ones. > > Signed-off-by: Thomas Wei=C3=9Fschuh Acked-by: Arnd Bergmann It's certainly a good idea to limit the use of asm/page.h and the other headers here.=20 > There are other ways to solve this issue, for example using > KBUILD_CPPFLAGS +=3D -m64. I think we should probably do that as well, especially since my kernel.org cross-compilers still default to a 32-bit s390 target for historic reasons, but the kernel no longer supports 32-bit userland. Arnd