[Xen-devel] manipulation of RDTSC values in VT xen

[Christopher Kanich <ckanich@xxxxxxxxxx>]

Hi, I'm currently working with Xen unstable on a VT enabled machine and 
was wondering if someone could point me to the virtualization point (or 
somewhere that I might manipulate) the return value of the RDTSC 
instruction when issued in a guest domain.
Also, it is my understanding that this value is stored per-VM in the VT 
architecture, and thus is kept accurate as if the operating system were 
running solitary on non-VT hardware. Is this correct? I am currently 
investigating the fidelity of the environment provided by VT Xen to 
programs run on guest operating systems.
Thanks for any insight you may have to offer,
Chris Kanich
UCSD Dept. of Computer Science and Engineering

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