I have been searching and reading intently for the past day also.  I am 
disappointed by the rush to republish and dearth of solid data beyond the Proof 
of Concept.

Apparently in theory Spectre haunts all processors back to the Pentium Pro.  
There is very little solid evidence of what steppings of what processors are 
vulnerable.  Intel changes masks often enough that it's NOT clear that every 
processors will have similar exposure, e.g. the infamous ancient FDIV bug only 
affected certain steppings of one of the P54 CPUs.  I'm not betting anybody 
will critically evaluate the older CPUs still in service, e.g. my two Core2 
Duos and one Core2 Quad Extreme, i7/940 & 870, even a few Pentium 3's, 
Coppermine, Tualatin and even Esther.  

Likewise, I'm not betting kernel patches will get pushed down to the kernels 
that support those old systems.  ext3 is not supported in the latest kernels, 
so instructions to install the latest kernels will leave many systems 
non-functional.  I think patches need to be pushed back to 3.19 kernels.

I'm making plans for patching kernels, and identifying systems that CAN be.  
But I'll wait a few days for patches to solidify.  There are significant 
infrastructure issues all around.  Not to mention (Windows & Linux) "kernel" 
support for all the systems in commercial service in hospitals, grocery stores, 
and offices that will never be updated.

-- 
Paul Rogers
[email protected]
Rogers' Second Law: "Everything you do communicates."
(I do not personally endorse any additions after this line. TANSTAAFL :-)
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