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For secure VMs, the signing tool will create a ticket called the "ESM blob" for the Enter Secure Mode ultravisor call with the signatures of the kernel and initrd among other things. This adds support to the wrapper script for adding that blob via the "-e" option to the zImage.pseries. It also adds code to the zImage wrapper itself to retrieve and if necessary relocate the blob, and pass its address to Linux via the device-tree, to be later consumed by prom_init. Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> [ bauerman: Minor adjustments to some comments. ] Signed-off-by: Thiago Jung Bauermann <bauerman@linux.ibm.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20190820021326.6884-4-bauerman@linux.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.
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.