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The index returned by kvm_async_pf_gfn_slot() will be removed when an async pf gfn is going to be removed. However kvm_async_pf_gfn_slot() is not reliable in that it can return the last key it loops over even if the gfn is not found in the async gfn array. It should never happen, but it's still better to sanity check against that to make sure no unexpected gfn will be removed. Signed-off-by: Peter Xu <peterx@redhat.com> Message-Id: <20200416155910.267514-1-peterx@redhat.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.