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[ Upstream commit 8e6b6da91ac9b9ec5a925b6cb13f287a54bd547d ] Some PowerPC CPUs are vulnerable to L1TF to the same extent as to Meltdown. It is also mitigated by flushing the L1D on privilege transition. Currently the sysfs gives a false negative on L1TF on CPUs that I verified to be vulnerable, a Power9 Talos II Boston 004e 1202, PowerNV T2P9D01. Signed-off-by: Anthony Steinhauser <asteinhauser@google.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> [mpe: Just have cpu_show_l1tf() call cpu_show_meltdown() directly] Link: https://lore.kernel.org/r/20191029190759.84821-1-asteinhauser@google.com 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.