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f93d6d62e4
kvm_s390_update_topology_change_report() modifies a single bit within sca_utility using cmpxchg(). Given that the size of the sca_utility union is two bytes this generates very inefficient code. Change the size to four bytes, so better code can be generated. Even though the size of sca_utility doesn't reflect architecture anymore this seems to be the easiest and most pragmatic approach to avoid inefficient code. Acked-by: Claudio Imbrenda <imbrenda@linux.ibm.com> Acked-by: Janosch Frank <frankja@linux.ibm.com> Link: https://lore.kernel.org/r/20241126102515.3178914-4-hca@linux.ibm.com Signed-off-by: Heiko Carstens <hca@linux.ibm.com> |
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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.