Re: [Xen-devel] [PATCH RESEND 1/2] xenbus_client: Extend interface to support multi-page ring

[Juergen Gross <jgross@xxxxxxxx>]

On 03/31/2015 03:13 PM, Wei Liu wrote:
> On Tue, Mar 31, 2015 at 02:36:43PM +0200, Juergen Gross wrote:
> > On 03/31/2015 02:15 PM, Bob Liu wrote:
> > > From: Wei Liu <wei.liu2@xxxxxxxxxx>
> > >
> > > Originally Xen PV drivers only use single-page ring to pass along
> > > information. This might limit the throughput between frontend and
> > > backend.
> > >
> > > The patch extends Xenbus driver to support multi-page ring, which in
> > > general should improve throughput if ring is the bottleneck. Changes to
> > > various frontend / backend to adapt to the new interface are also
> > > included.
> > >
> > > Affected Xen drivers:
> > > * blkfront/back
> > > * netfront/back
> > > * pcifront/back
> > What about pvscsi drivers?
> > They are affected, too!
> When I wrote this patch pvscsi didn't exist upstream.
>
> It would be fairly easy to change that driver too.
Sure. But if you don't do it you'll break the build...


Juergen

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