[Xen-devel] Re: [PATCH v6] Userspace grant communication

[Konrad Rzeszutek Wilk <konrad.wilk@xxxxxxxxxx>]

> > And besides the two questions I posted today they look OK to me. However
> > I have on question that I think points to a bug.

.. snip ..

> I think this will come out with map.index=4, op.index=8192, since the only
> entry in priv->maps has map->index = 0 and map->count = 4.

Duh! Yes, and that changes how this all works out.
..
> much simpler method of an always-incrementing index for generating offsets;
> there's no reason that that can't be done here if it looks like there's a
> mistake. The code does look correct to me, and I have tested it with 
> variable-size
> grants (although not in the 4/1/1 configuration you suggested).

That is OK. Thanks for working through this example.

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