linux-kernel - Re: [PATCH v3 1/6] virtio_balloon: transitional interface

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Message-ID: <20150401124539-mutt-send-email-mst@redhat.com>
Date:	Wed, 1 Apr 2015 12:49:02 +0200
From:	"Michael S. Tsirkin" <mst@...hat.com>
To:	linux-kernel@...r.kernel.org
Cc:	Cornelia Huck <cornelia.huck@...ibm.com>,
	Pawel Moll <pawel.moll@....com>,
	virtio-dev@...ts.oasis-open.org,
	Rusty Russell <rusty@...tcorp.com.au>,
	virtualization@...ts.linux-foundation.org,
	linux-api@...r.kernel.org
Subject: Re: [PATCH v3 1/6] virtio_balloon: transitional interface

On Wed, Apr 01, 2015 at 12:35:45PM +0200, Michael S. Tsirkin wrote:
> Virtio 1.0 doesn't include a modern balloon device.
> But it's not a big change to support a transitional
> balloon device: this has the advantage of supporting
> existing drivers, transparently.
> 
> Signed-off-by: Michael S. Tsirkin <mst@...hat.com>
> ---
>  include/uapi/linux/virtio_balloon.h | 11 ++++++++--
>  drivers/virtio/virtio_balloon.c     | 43 +++++++++++++++++++++++++++++--------
>  2 files changed, 43 insertions(+), 11 deletions(-)

So all in all 32 LOC added, and 9 out of these
deal with endian-ness differences.

Seems like a small cost for guests to pay for a clean spec, no?

-- 
MST
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