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Add KUnit tests for the contiguous physical memory regions merging functionality from the Nitro Enclaves misc device logic. We can build the test binary with the following configuration: CONFIG_KUNIT=y CONFIG_NITRO_ENCLAVES=m CONFIG_NITRO_ENCLAVES_MISC_DEV_TEST=y and install the nitro_enclaves module to run the testcases. We'll see the following message using dmesg if everything goes well: [...] # Subtest: ne_misc_dev_test [...] 1..1 [...] (NULL device *): Physical mem region address is not 2 MiB aligned [...] (NULL device *): Physical mem region size is not multiple of 2 MiB [...] (NULL device *): Physical mem region address is not 2 MiB aligned [...] ok 1 - ne_misc_dev_test_merge_phys_contig_memory_regions [...] ok 1 - ne_misc_dev_test Reviewed-by: Andra Paraschiv <andraprs@amazon.com> Signed-off-by: Longpeng <longpeng2@huawei.com> Link: https://lore.kernel.org/r/20211107140918.2106-5-longpeng2@huawei.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.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.