Linux and Quad-core CPU security

Hello All,

When quad-core processors were released a short while back, I heard some brief blurbs about how there were security issues with the shared CPU cache memory.

So, some questions:

1. Did that turn out to be a non-issue?
2. If not, does anyone know what's being done to solve the problem (esp from a Linux perspective)? The issue seems to have dropped of the "IT News" radar.

Cheers,
Arpotu.

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