Re: [PATCH 2/6] virtio: add context flag to find vqs

["Michael S. Tsirkin" <mst@redhat.com>]

On Thu, Mar 30, 2017 at 09:17:31AM +0200, Cornelia Huck wrote:
> On Wed, 29 Mar 2017 23:48:51 +0300
> "Michael S. Tsirkin" <mst@redhat.com> wrote:
> 
> > Allows maintaining extra context per vq.  For ease of use, passing in
> > NULL is legal and disables the feature for all vqs.
> > 
> > Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
> > ---
> >  drivers/misc/mic/vop/vop_main.c    |  9 ++++++---
> >  drivers/s390/virtio/kvm_virtio.c   |  6 ++++--
> >  drivers/s390/virtio/virtio_ccw.c   |  7 ++++---
> >  drivers/virtio/virtio_mmio.c       |  8 +++++---
> >  drivers/virtio/virtio_pci_common.c | 18 +++++++++++-------
> >  drivers/virtio/virtio_pci_common.h |  4 +++-
> >  drivers/virtio/virtio_pci_legacy.c |  4 +++-
> >  drivers/virtio/virtio_pci_modern.c | 12 ++++++++----
> >  drivers/virtio/virtio_ring.c       |  7 +++++--
> >  include/linux/virtio_config.h      | 18 +++++++++++++++---
> >  include/linux/virtio_ring.h        |  3 +++
> >  11 files changed, 67 insertions(+), 29 deletions(-)
> 
> This series really needs a cover letter, explaining the motivation for
> adding this context.

True. Will try to improve that for v2.

> From what I understand, you want to track some length parameter in
> virtio-net. As you don't use indirect descriptors in that case, you
> want to use a context instead. Did I get this correctly?

Exactly.

-- 
MST