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a89474aaf7
EFI has a rather unique benefit that it has access to some limited non-volatile storage, where the kernel can store a random seed. Read that seed in EFISTUB and concatenate it with other seeds we wind up passing onward to the kernel in the configuration table. This is complementary to the current other two sources - previous bootloaders, and the EFI RNG protocol. Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com> [ardb: check for non-NULL RNG protocol pointer, call GetVariable() without buffer first to obtain the size] Signed-off-by: Ard Biesheuvel <ardb@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.