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c39f5974d3
KVM allows userspace to write to the CSV2 and CSV3 fields of ID_AA64PFR0_EL1 so long as it doesn't over-promise on the Spectre/Meltdown mitigation state. Switch over to the new way of the world for screening user writes. Leave the old plumbing in place until we actually start handling ID register reads from the VM-wide values. Signed-off-by: Jing Zhang <jingzhangos@google.com> Link: https://lore.kernel.org/r/20230609190054.1542113-10-oliver.upton@linux.dev [Oliver: split from monster patch, added commit description] Signed-off-by: Oliver Upton <oliver.upton@linux.dev>
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.