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

Keir Fraser
2007-05-22T07:48:04Z

On 22/5/07 08:28, "Kieran Mansley" <kmansley@solarflare.com>
wrote:

> On Tue, 2007-05-22 at 08:15 +0100, Kieran Mansley wrote:
>> RCU on its own wouldn''t
>> prevent the accelerated plugin being unloaded while netfront was using
>> one of the hooks.
>
> Hmm, actually I think it could be used to do that.  I''ll take a
look.

Eagerly zap the function pointers, then wait one RCU period so every CPU
goes through a quiescent point before unloading the module?

 -- Keir