[Xen-devel] TPR write optimization

["James Harper" <james.harper@xxxxxxxxxxxxxxxx>]

For anyone who is interested, I have implemented TPR write optimization
based on Travis Betak's amdvopt driver. My implementation gets the base
address and length of hal.dll when loaded into memory and scans that for
patchable instructions, instead of the patch table approach that Travis
used.

A preliminary test under XP shows a 10x increase in iperf performance.

I'll test under 2003sp1 soon, unfortunately my sp1 decided to
automatically install sp2 and I 'xm destroy'd it in the middle of that
and now it's doing a chkdsk...

James 

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