Another Side Channel in Intel Chips
Schneier on Security
SEPTEMBER 16, 2019
Not that serious, but interesting : In late 2011, Intel introduced a performance enhancement to its line of server processors that allowed network cards and other peripherals to connect directly to a CPU's last-level cache, rather than following the standard (and significantly longer) path through the server's main memory. By avoiding system memory, Intel's DDIOshort for Data-Direct I/Oincreased input/output bandwidth and reduced latency and power consumption.
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