Compiling with e.g MARCH=z900 results in compile errors: arch/s390/lib/uaccess.c: In function 'copy_from_user_mvcos': >> arch/s390/lib/uaccess.c:65:15: error: variable 'spec' has initializer but incomplete type 65 | union oac spec = { Therefore make definition of union oac visible for all MARCHs. Reported-by: kernel test robot <lkp@intel.com> Cc: Nico Boehr <nrb@linux.ibm.com> Cc: Janis Schoetterl-Glausch <scgl@linux.ibm.com> Fixes: 012a224e1fa3 ("s390/uaccess: introduce bit field for OAC specifier") Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
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 Restructured Text 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.
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