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

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On Wed, 29 Mar 2017 23:48:51 +0300
"Michael S. Tsirkin" <mst@xxxxxxxxxx> 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@xxxxxxxxxx>
> ---
>  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.

>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?




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