Re: [Xen-devel] [PATCH RESEND 2/4] qdisk, hw/block/xen_disk: Removal of grant mapping

[Roger Pau Monné <roger.pau@xxxxxxxxxx>]

On Tue, May 31, 2016 at 06:44:56AM +0200, Paulina Szubarczyk wrote:
> Grant mapping related functions and variables are removed
> on behalf of grant copy operation introduced in following commits.

As David says, you should not remove this before adding a suitable 
replacement, or else you are breaking the build.

Also, the grant map and unmap mode should be keep (we can talk about 
removing persistent grants support), because there are gnttab devices out 
there that only support grant map/unmap, but not grant copy IIRC.

Roger.

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