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    SubjectRe: [PATCH] x86, cpufeature: Fix duplicate feature name "dts"
    On Thu, 21 Jun 2012 09:28:59 -0700, H. Peter Anvin wrote:
    > Good spotting, but I'm worried this is the wrong fix.
    > This is a userspace ABI change, and the and we have used "dts" for debug
    > store (debug trace store?) for a very long tie, whereas digital thermal
    > sensor only has been used since 2010; another *major* question is which
    > of these is more likely to be of interest to userspace.

    I am aware of this problem. I found the bug because I was looking for
    the Digital Thermal Sensor feature, and /proc/cpuinfo said "dts" but
    the driver wouldn't work, this confused me. So at least the Digital
    Thermal Sensor is of interest. That being said I believe interest is
    more from humans than software, which is why I do not feel bad changing
    it. The current situation could already lead to false positives anyway,
    both for humans and software.

    If your "right fix" is to find something else for the Digital Thermal
    Sensor, I doubt you can find something that won't confuse people even
    more. Especially when there is also the Package Thermal Sensor feature
    which is properly labeled "pts" already. "DTS" is widely used in the
    technical documentation to refer to this feature.

    And FWIW, X86_FEATURE_DS has no user in the kernel. Doesn't look like a
    key feature to me, but maybe my view is biased...

    Jean Delvare

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