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    SubjectRe: [PATCH] All Transmeta CPUs have constant TSCs
    dean gaudet wrote:
    > On Mon, 8 Jan 2007, H. Peter Anvin wrote:
    >
    >> I *definitely* support the concept that RDPMC 0 should could CPU cycles by
    >> convention in Linux.
    >
    > unfortunately that'd be very limiting and annoying on core2 processors
    > which have dedicated perf counters for clocks unhalted (actual vs.
    > nominal), but only 2 configurable perf counters. i forget what ecx value
    > gets you the dedicated counters... but a solution which might work would
    > be a syscall to return the perf counter number...
    >
    > or we could just merge perfmon ;)
    >

    OK, if there are dedicated counters in hardware at a different number,
    we probably should make it an ELF entry value (no need to make it a
    syscall for a constant.)

    -hpa
    -
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