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    SubjectRe: [PATCH] x86: Export tsc related information in sysfs
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    On Tue, 2010-05-18 at 09:40 -0700, H. Peter Anvin wrote:
    >
    > The problem is that you throw the baby (vsyscall) out with the bathwater
    > (user rdtsc).

    Well, we could only flip the CR4 bit when we mark the TSC unsuitable for
    gtod. That should be plenty good to tag all userspace trying to use it,
    since more than half my machines don't use TSC for clocksource.


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