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5982a53926
Use the constant-after-module-load kvm_ad_enabled() to check if SPTEs in the TDP MMU need to be write-protected when clearing accessed/dirty status instead of manually checking every SPTE. The per-SPTE A/D enabling is specific to nested EPT MMUs, i.e. when KVM is using EPT A/D bits but L1 is not, and so cannot happen in the TDP MMU (which is non-nested only). Keep the original code as sanity checks buried under MMU_WARN_ON(). MMU_WARN_ON() is more or less useless at the moment, but there are plans to change that. Link: https://lore.kernel.org/all/Yz4Qi7cn7TWTWQjj@google.com Signed-off-by: Vipin Sharma <vipinsh@google.com> [sean: split to separate patch, apply to dirty path, write changelog] Link: https://lore.kernel.org/r/20230321220021.2119033-3-seanjc@google.com Signed-off-by: Sean Christopherson <seanjc@google.com> |
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| README | ||
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.