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If dirty_log_test is run nested, it is possible for entries in the emulated PML log to appear before the actual memory write is committed to the RAM, due to the way KVM retries memory writes as a response to a MMU fault. In addition to that in some very rare cases retry can happen more than once, which will lead to the test failure because once the write is finally committed it may have a very outdated iteration value. Detect and avoid this case. Cc: Peter Xu <peterx@redhat.com> Signed-off-by: Maxim Levitsky <mlevitsk@redhat.com> Link: https://lore.kernel.org/r/20250111003004.1235645-2-seanjc@google.com 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.