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<ref name="XAPP1078"> John McDougall, ''XAPP1078 (v1.0) Simple AMP Running Linux and Bare-Metal System on Both Zynq SoC Processors'', 14th February 2013</ref> and
<ref name="XAPP1079">John McDougall, ''XAPP1079 (v1.0.1) Simple AMP: Bare-Metal System Running on Both Cortex-A9 Processors'', 24th January 2014</ref>,
L2 cache - in contrast to L1 - is a shared resource in Zynq implementation. As such, in case both cores have to use it, specific techniques have to be implemented to handle it properly in dual-OS AMP configuration. In principle the approach that has been adopted allows to implement different strategies related to L2 cache management. The actual configuration that has been used to conduct the tests described in [[#Characterization and performance tests|this section]] assigns the whole L2 cache to the W2 world, as depicted in the following picture.
<span id="L2 cache usage"></span>
