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SubjectRe: X15 alpha release: as fast as TUX but in user space (fwd)
[sorry for the late answer -- i was involuntarily offline for a few days]

On Sat, Apr 28, 2001 at 04:56:27PM -0600, Richard Gooch wrote:
> Whatever happened to that hack that was discussed a year or two ago?
> The one where (also on IA32) a magic page was set up by the kernel
> containing code for fast system calls, and the kernel would write
> calibation information to that magic page. The code written there
> would use the TSC in conjunction with that calibration data.
> There was much discussion about this idea, even Linus was keen on
> it. But IIRC, nothing ever happened.

It's already implemented in the x86-64 port, thanks to Andrea

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