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    SubjectRe: [GIT PULL] perf changes for v3.8

    * David Ahern <dsahern@gmail.com> wrote:

    > > But doing it this way was wrong. Switch that "exclude_guest"
    > > attribute around, and admit that "H" was bogus, and that the
    > > right thing to do was to add a "V" flag that sets the
    > > "force_guest" flag instead.
    >
    > I understand this is annoying. [...]

    It's not annoying, it's outright broken - it's a regression that
    we'll fix.

    > [...] Older binaries on newer kernels was the only case I
    > could not fix. [...]

    The "only" case?? Old, working binaries are actually our _most_
    important usecase: it's 99.9% of our current installed base ...

    > [...] (I guess a message could be added kernel side to at
    > least give a hint.) But the alternative -- based on code that
    > has existed for some time -- is for older binaries to crash
    > VMs.

    That should be fixed differently, by not breaking existing
    working functionality.

    Thanks,

    Ingo


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