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A host program identifier (HPID) provides information regarding the underlying host environment. A level-2 (VM) guest will have an HPID denoting Linux/KVM, which is set during VCPU setup. A level-3 (VM on a VM) and beyond guest will have an HPID denoting KVM vSIE, which is set for all shadow control blocks, overriding the original value of the HPID. Signed-off-by: Collin Walling <walling@linux.ibm.com> Reviewed-by: Janosch Frank <frankja@linux.ibm.com> Message-Id: <1535734279-10204-4-git-send-email-walling@linux.ibm.com> Reviewed-by: Christian Borntraeger <borntraeger@de.ibm.com> Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.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.
See Documentation/00-INDEX for a list of what is contained in each file.
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.