ARM SoC launched with Linux support (Linux Devices)

ARM SoC launched with Linux support (Linux Devices)

Posted Jan 10, 2009 13:22 UTC (Sat) by alonz (subscriber, #815)
In reply to: ARM SoC launched with Linux support (Linux Devices) by ncm
Parent article: ARM SoC launched with Linux support (Linux Devices)

Well, in practice, LL/SC is quite easy to implement—it is almost a natural extension of the MESI protocol used for synchronizing the L1 caches in a multiprocessor chip.

IIRC, "load-locked" ensures the line is in the cache; "store-conditional" simply tests the line is currently not in "Invalid" state (i.e., it has not been written by another processor).

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