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51192ebdd1
Return immediately if a young SPTE is found when testing, but not updating, SPTEs. The return value is a boolean, i.e. whether there is one young SPTE or fifty is irrelevant (ignoring the fact that it's impossible for there to be fifty SPTEs, as KVM has a hard limit on the number of valid TDP MMU roots). Link: https://lore.kernel.org/r/20241011021051.1557902-15-seanjc@google.com [sean: use guard(rcu)(), as suggested by Paolo] Signed-off-by: Sean Christopherson <seanjc@google.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 reStructuredText 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.