Re: [Xen-devel] HT Vulnerability CAN-2005-0109

["Jonathan S. Shapiro" <shap@xxxxxxxxxxx>]

On Wed, 2005-05-18 at 17:44 +0100, Mark Williamson wrote:
> > All that being said, future processors are moving from HT to multicore. The
> > problem then migrates to the L2 cache, where coloring is much less
> > effective. It is unlikely that there exists any satisfsactory solution
> > short of flushing or disabling the cache, neither of which is pragmatically
> > viable.
> 
> But the bandwidth for L2 cache channel using this technique will also be 
> lower 
> than for the L1....

This isn't immediately obvious. It depends on how effectively the
transmitter can achieve "line resident in L2 but not in L1".


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