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

[Keir Fraser <keir.fraser@xxxxxxxxxxxxx>]

Which means, if you want a more useful answer, you'll have to explain the
potential bug more long-windedly with illustration.

 K.

On 02/02/2010 13:28, "Keir Fraser" <keir.fraser@xxxxxxxxxxxxx> wrote:

> 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
>> 
> 
> 
> 
> _______________________________________________
> Xen-devel mailing list
> Xen-devel@xxxxxxxxxxxxxxxxxxx
> http://lists.xensource.com/xen-devel



_______________________________________________
Xen-devel mailing list
Xen-devel@xxxxxxxxxxxxxxxxxxx
http://lists.xensource.com/xen-devel