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[ Upstream commit c6b8b8eb49904018e22e4e4b1fa502e57dc747d9 ] The system EID (SEID) is an internal EID used by SMC-D to represent the s390 physical machine that OS is executing on. On s390 architecture, it predefined by fixed string and part of cpuid and is enabled regardless of whether underlay device is virtual ISM or platform firmware ISM. However on non-s390 architectures where SMC-D can be used with virtual ISM devices, there is no similar information to identify physical machines, especially in virtualization scenarios. So in such cases, SEID is forcibly disabled and the user-defined UEID will be used to represent the communicable space. Signed-off-by: Wen Gu <guwen@linux.alibaba.com> Reviewed-and-tested-by: Wenjia Zhang <wenjia@linux.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net> Signed-off-by: Sasha Levin <sashal@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.