[cap-talk] SPAM-LOW: Language-based OS domain separation.
Jonathan S. Shapiro
shap at eros-os.com
Tue Jun 12 10:06:11 EDT 2007
On Tue, 2007-06-12 at 09:33 -0400, Sandro Magi wrote:
> Indeed. LLVM has some interesting work in this area called the "Secure
> Virtual Architecture" (SVA). They perform a flow sensitive analysis of
> unmodified C and can ensure that pointers cause no errors. They can't
> eliminate the dangling pointers, but they can apparently make them
> harmless. The reported overhead is less than 30% IIRC.
Some of the existing sandboxing work is down closer to 3%, which is
comparable to the cost of hardware-based protection.
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