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Heiko Carstens fa7a0a53ee s390: Add -Wno-pointer-sign to KBUILD_CFLAGS_DECOMPRESSOR
If the decompressor is compiled with clang this can lead to the following
warning:

In file included from arch/s390/boot/startup.c:4:
...
In file included from ./include/linux/pgtable.h:6:
./arch/s390/include/asm/pgtable.h:2065:48: warning: passing 'unsigned long *' to parameter of type
      'long *' converts between pointers to integer types with different sign [-Wpointer-sign]
 2065 |                 value = __atomic64_or_barrier(PGSTE_PCL_BIT, ptr);

Add -Wno-pointer-sign to the decompressor compile flags, like it is also
done for the kernel. This is similar to what was done for x86 to address
the same problem [1].

[1] commit dca5203e3f ("x86/boot: Add -Wno-pointer-sign to KBUILD_CFLAGS")

Cc: stable@vger.kernel.org
Reported-by: Gerd Bayer <gbayer@linux.ibm.com>
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
Reviewed-by: Alexander Gordeev <agordeev@linux.ibm.com>
Signed-off-by: Alexander Gordeev <agordeev@linux.ibm.com>
History 2025-09-29 13:52:08 +02:00
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Linux kernel
============

There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.

In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``.  The formatted documentation can also be read online at:

    https://www.kernel.org/doc/html/latest/

There are various text files in the Documentation/ subdirectory,
several of them using the reStructuredText markup notation.

Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.