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    SubjectRe: [PATCH v3] x86/vdso: Handle clock_gettime(CLOCK_TAI) in vDSO
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    On 09/09/2018 10:05 PM, Thomas Gleixner wrote:
    > See the patch below. It's integrating TAI without slowing down everything
    > and it definitely does not result in indirect calls.
    >
    > On a HSW it slows down clock_gettime() by ~0.5ns. On a SKL I get a speedup
    > by ~0.5ns. On a AMD Epyc server it's 1.2ns speedup. So it somehow depends
    > on the uarch and I also observed compiler version dependend variations.

    Does this mean glibc can keep using a single vDSO entrypoint, the one we
    have today?

    Thanks,
    Florian

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