- File "fixes_for_kernel_6.3.patch" is updated for more API changes
  File "fix_7.0.6_locking_problems.patch" is added. Fixes boo#1209529.
    Larry Len Rainey and I have worked on this bug for some time. It only
    happened on systems with large numbers of processors and many virtual
    machines. We suspected a locking problem, but the thought of auditing
    the entire code was daunting until it was discovered that there was no
    problem if the host ran VB 6.1.40. It did not matter what version the
    guests were running. That essentially eliminated every code part except
    for vboxdrv.ko. That made the audit tractable. There were two files and
    a total of 8 places where the locking was suspect. When those were
    changed, the lockups while using 7.0.6 host code were no longer observed.
    The lockups were infrequent, thus it is impossible to say that we have
    fixed everything, but the frequency is clearly diminished.

  spec-cleaner used to remove extra blank line is spec file.

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