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Add a user space sample for the usage of the ioctl interface provided by the Nitro Enclaves driver. Changelog v9 -> v10 * Update commit message to include the changelog before the SoB tag(s). v8 -> v9 * No changes. v7 -> v8 * Track NE custom error codes for invalid page size, invalid flags and enclave CID. * Update the heartbeat logic to have a listener fd first, then start the enclave and then accept connection to get the heartbeat. * Update the reference link to the hugetlb documentation. v6 -> v7 * Track POLLNVAL as poll event in addition to POLLHUP. v5 -> v6 * Remove "rc" mentioning when printing errno string. * Remove the ioctl to query API version. * Include usage info for NUMA-aware hugetlb configuration. * Update documentation to kernel-doc format. * Add logic for enclave image loading. v4 -> v5 * Print enclave vCPU ids when they are created. * Update logic to map the modified vCPU ioctl call. * Add check for the path to the enclave image to be less than PATH_MAX. * Update the ioctl calls error checking logic to match the NE specific error codes. v3 -> v4 * Update usage details to match the updates in v4. * Update NE ioctl interface usage. v2 -> v3 * Remove the include directory to use the uapi from the kernel. * Remove the GPL additional wording as SPDX-License-Identifier is already in place. v1 -> v2 * New in v2. Reviewed-by: Alexander Graf <graf@amazon.com> Signed-off-by: Alexandru Vasile <lexnv@amazon.com> Signed-off-by: Andra Paraschiv <andraprs@amazon.com> Link: https://lore.kernel.org/r/20200921121732.44291-17-andraprs@amazon.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.