On 08/06/2013 11:51 AM, David Miller wrote:
> Jason, I want to get that into v3.4.x -stable but it needs a backport
> and I'd rather someone like you who knows the code does it rather
> than I.
>
> The issue seems that be that the arguments to uarg->callback() were
> different back then.
>
> Thanks.

Sure.

For 3.4.x we need to pick c70aa540c7a9f67add11ad3161096fb95233aa2e
(vhost: zerocopy: poll vq in zerocopy callback) first to let the
backport work. The reason of different arguments is because 3.4.x does
not track DMA failure. So we can just do uarg->callback(uarg);

Please see the attached patches.

Thanks