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6ce019f73d
I do not see much sense in the #if conditional in system_certificates.S; even if the condition is true, there exists no signing key when CONFIG_MODULE_SIG_KEY="". So, certs/Makefile generates empty certs/signing_key.x509 in such a case. We can always do this, irrespective of CONFIG_MODULE_SIG or (CONFIG_IMA_APPRAISE_MODSIG && CONFIG_MODULES). We only need to check CONFIG_MODULE_SIG_KEY, then both *.S and Makefile will become much simpler. Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
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.