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8f366ae6d8
Tweak the MMU_WARN that guards against weirdness when querying A/D status to fire on a !MMU_PRESENT SPTE, as opposed to a MMIO SPTE. Attempting to query A/D status on any kind of !MMU_PRESENT SPTE, MMIO or otherwise, indicates a KVM bug. Case in point, several now-fixed bugs were identified by enabling this new WARN. Signed-off-by: Sean Christopherson <seanjc@google.com> Message-Id: <20210225204749.1512652-22-seanjc@google.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.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.