Re: Ping: [Xen-devel] netback data access synchronization question

[Keir Fraser <keir.fraser@xxxxxxxxxxxxx>]

It's a long time since I was in that code!

 K.

On 02/02/2010 10:46, "Jan Beulich" <JBeulich@xxxxxxxxxx> wrote:

> Keir,
> 
> in the absence of anyone else responding, I would have hoped to at
> least get your opinion, as it was apparently your patch that added the
> consumer side of the code in question.
> 
> Thanks, Jan
> 
>>>> "Jan Beulich" <JBeulich@xxxxxxxxxx> 22.01.10 14:07 >>>
> With netbk_gop_frag() (called in the context of net_rx_action())
> consuming data (pending_tx_info[]) invalidated in net_tx_action_dealloc()
> (called from net_tx_action()), how is it guaranteed that the grant ref
> used will remain valid until the hypervisor gets to validate the arguments
> to GNTTABOP_copy?
> 
> Thanks, Jan
> 



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