Re: [Qemu-devel] [PATCH 07/13] usb: Convert usb_packet_{map, unmap} to universal DMA helpers

[David Gibson]

On Wed, Jun 20, 2012 at 01:52:12PM +1000, Benjamin Herrenschmidt wrote:
> On Wed, 2012-06-20 at 13:14 +1000, David Gibson wrote:
> > So, in fact the original comment is a bit out of date.  With the
> > current version of this series, then a guest attempt to invalidate
> > will be delayed until the unmap occurs. 
> 
> No, this code was dropped, including the tracking of the maps, following
> comments from Anthony and others. The API for providing a cancel
> callback is still there but nothing will call it unless the backend does
> its own tracking and decides to do so.

Ah, right.

-- 
David Gibson                    | I'll have my music baroque, and my code
david AT gibson.dropbear.id.au  | minimalist, thank you.  NOT _the_ _other_
                                | _way_ _around_!
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