Re: [Xen-devel] [PATCH] pvcpuid: mask TSC invariant bit for various circumstances

[Jeremy Fitzhardinge <jeremy@xxxxxxxx>]

On 10/28/09 09:27, Dan Magenheimer wrote:
> 3 = (a) IF processor supports rdtscp instruction:
>        rdtsc/p is native, Xen provides TSC_AUX and pvclock info
>     (b) IF processor doesn't support rdtscp instruction:
>        rdtsc/p is emulated (with degenerate TSC_AUX/pvclock info)
>   

How will this interact with operating systems which also want to use
TSC_AUX when rdtscp is available?

    J

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