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    SubjectRe: [PATCH] Display Intel Dynamic Acceleration feature in /proc/cpuinfo
    Pallipadi, Venkatesh wrote:
    > The way new Intel features are being exposed in CPUID is kind of
    > changing.

    Changing is a VERY BAD THING when it comes to something like CPUID.

    > Now we have different CPUID leafs for different kind of features with
    > each of them growing much slowly.
    > I mean, there is
    > monitor-mwait related features in CPUID 5
    > powermanagement features in CPUID 6 EAX, ECX
    > Perfmon features in CPUID 10

    Again, this is bad.

    > This does not fit well with the way we use the feature words in Linux.

    No, it doesn't... nor for anyone else who wants a compact representation
    of this kind of information.

    If they grow slowly from the bottom, I guess we could simply allocate
    space in the vector byte by byte instead. Either way, it means more
    work whenever anything has to change.

    -hpa
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