Andrea Arcangeli wrote:
> So the data information won't be at a known location and even if userspace
> disasseble the vsyscalls to find where the information is placed to read
> it without passing thorugh the vsyscall table, userspace still will read
> what we want to show (in your example you can show the cpuid that you
> prefer).
Good point. You can bet that some partial machine code evaluator would
like to disassemble the vsyscall code and duplicate the equivalent in
JIT generated code at some point, interleaved with caller optimisations...
-- Jamie
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