Re: [Xen-devel] Xen 4.3 development update

[Thanos Makatos <thanos.makatos@xxxxxxxxxx>]

> -----Original Message-----
> From: George Dunlap [mailto:george.dunlap@xxxxxxxxxxxxx]
> Sent: 26 September 2012 10:37
> To: Matt Wilson
> Cc: Jan Beulich; xen-devel@xxxxxxxxxxxxx; Thanos Makatos
> Subject: Re: [Xen-devel] Xen 4.3 development update
> 
> On 21/09/12 04:18, Matt Wilson wrote:
> > On Thu, Sep 20, 2012 at 08:03:11AM +0100, Jan Beulich wrote:
> >>> On 19.09.12 at 18:58, George Dunlap <George.Dunlap@xxxxxxxxxxxxx>
> wrote:
> >>> * Persistent grants
> >>>    owner: @citrix
> >>>    status: ?
> >> Isn't that a guest side only thing (i.e. not really to be tracked
> >> here)? Or does that mean migrating active grants?
> > I'd assume that the device would be renegotiated during migration,
> and
> > that new grants would be established during the re-connect sequence.
> >
> > One question I have is how persistent grants intersect with blktap3.
> > Will a persistent grant-capable blktap3 implementation be in scope
> for
> > 4.3?
> Thanos is working on blktap3 -- Thanos, can you comment?

Supporting this in 4.3 is not top priority; however I'll do it if I have time.

> >
> >>> * Multi-page blk rings
> >>>   - blkback in kernel (konrad@oracle, ?@intel)
> >> This part certainly is a guest side only thing (apart from the
> >> interface definition living in the our tree).
> > Same question here regarding blktap3.
> And here.

I'm not sure I understand the question, blktap3 doesn't talk to blkback at all, 
but to blkfront directly -- are you referring to blkfront?

> 
>   -George

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