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The SGX ENCLS instruction uses EAX to specify an SGX function and may require additional registers, depending on the SGX function. ENCLS invokes the specified privileged SGX function for managing and debugging enclaves. Macros are used to wrap the ENCLS functionality and several wrappers are used to wrap the macros to make the different SGX functions accessible in the code. The wrappers of the supported SGX functions are cryptic. Add short descriptions of each as a comment. Suggested-by: Dave Hansen <dave.hansen@linux.intel.com> Signed-off-by: Reinette Chatre <reinette.chatre@intel.com> Signed-off-by: Dave Hansen <dave.hansen@linux.intel.com> Reviewed-by: Jarkko Sakkinen <jarkko@kernel.org> Link: https://lkml.kernel.org/r/5e78a1126711cbd692d5b8132e0683873398f69e.1652137848.git.reinette.chatre@intel.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.