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Message
From: Matjaz Breskvar<phoenix@o...>
Date: Tue May 31 22:24:45 CEST 2005
Subject: [oc] Hardware support for SMP
* Fabrizio Fazzino (fabrizio@f...) wrote:
> Hi all,
> I have not clear which hardware support should an embedded CPU
> provide to make it possible for an OS (like Linux) to support
> Symmetric Multi-Processing.
in order for all CPU's to work in unified memory space you'd need cache
coherency protocol (so that they both agree what is the 'current' data) and
some sort of atomic / locking operation (typic test and exchange or
decrement and test ...) so that you can implement (spin) locks.
best regards,
p.
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