[Xen-devel] Re: [PATCH 3/4] [Net] Support Xen accelerated network plugin modules

[Andi Kleen <andi@xxxxxxxxxxxxxx>]

Kieran Mansley <kmansley@xxxxxxxxxxxxxx> writes:

> RCU on its own wouldn't
> prevent the accelerated plugin being unloaded while netfront was using
> one of the hooks. 

Note that module unload does always does a stop_machine() which is much 
stronger than normal RCU. As long as you don't sleep and cannot be preemptable
it should be always safe.

-Andi

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