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List:       linux-kernel
Subject:    Re: x86 MSRs - example program
From:       alan () lxorguk ! ukuu ! org ! uk (Alan Cox)
Date:       1997-02-28 23:22:36
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> article). I'm using RDTSC from user space since a while in a FFT
> benchmarking software, i just wonder how it is possible ?
> 
> my software can be found here:
> ftp://sicel-home-1-4.urbanet.ch/pub/XSpectrum-1.1.tar.gz 
> 
> Needless to say that i own an intel pentium.

RDTSC access from user mode is controlled by one of the other magic
control registers. See www.x86.org


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