linux-kernel - Re: [virtio-dev] Re: [PATCH v5 0/3] Support virtio cross-device resources

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Date:   Tue, 23 Jun 2020 10:31:28 +0900
From:   David Stevens <stevensd@...omium.org>
To:     "Michael S. Tsirkin" <mst@...hat.com>
Cc:     Gerd Hoffmann <kraxel@...hat.com>, David Airlie <airlied@...ux.ie>,
        Daniel Vetter <daniel@...ll.ch>,
        Sumit Semwal <sumit.semwal@...aro.org>,
        Jason Wang <jasowang@...hat.com>,
        Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>,
        Maxime Ripard <mripard@...nel.org>,
        Thomas Zimmermann <tzimmermann@...e.de>,
        open list <linux-kernel@...r.kernel.org>,
        ML dri-devel <dri-devel@...ts.freedesktop.org>,
        "open list:VIRTIO GPU DRIVER" 
        <virtualization@...ts.linux-foundation.org>,
        Linux Media Mailing List <linux-media@...r.kernel.org>,
        "moderated list:DMA BUFFER SHARING FRAMEWORK" 
        <linaro-mm-sig@...ts.linaro.org>, virtio-dev@...ts.oasis-open.org,
        alex.williamson@...hat.com
Subject: Re: [virtio-dev] Re: [PATCH v5 0/3] Support virtio cross-device resources

Unless there are any remaining objections to these patches, what are
the next steps towards getting these merged? Sorry, I'm not familiar
with the workflow for contributing patches to Linux.

Thanks,
David

On Tue, Jun 9, 2020 at 6:53 PM Michael S. Tsirkin <mst@...hat.com> wrote:
>
> On Tue, Jun 09, 2020 at 10:25:15AM +0900, David Stevens wrote:
> > This patchset implements the current proposal for virtio cross-device
> > resource sharing [1]. It will be used to import virtio resources into
> > the virtio-video driver currently under discussion [2]. The patch
> > under consideration to add support in the virtio-video driver is [3].
> > It uses the APIs from v3 of this series, but the changes to update it
> > are relatively minor.
> >
> > This patchset adds a new flavor of dma-bufs that supports querying the
> > underlying virtio object UUID, as well as adding support for exporting
> > resources from virtgpu.
>
> Gerd, David, if possible, please test this in configuration with
> virtual VTD enabled but with iommu_platform=off
> to make sure we didn't break this config.
>
>
> Besides that, for virtio parts:
>
> Acked-by: Michael S. Tsirkin <mst@...hat.com>
>
>
> > [1] https://markmail.org/thread/2ypjt5cfeu3m6lxu
> > [2] https://markmail.org/thread/p5d3k566srtdtute
> > [3] https://markmail.org/thread/j4xlqaaim266qpks
> >
> > v4 -> v5 changes:
> >  - Remove virtio_dma_buf_export_info.
> >
> > David Stevens (3):
> >   virtio: add dma-buf support for exported objects
> >   virtio-gpu: add VIRTIO_GPU_F_RESOURCE_UUID feature
> >   drm/virtio: Support virtgpu exported resources
> >
> >  drivers/gpu/drm/virtio/virtgpu_drv.c   |  3 +
> >  drivers/gpu/drm/virtio/virtgpu_drv.h   | 20 ++++++
> >  drivers/gpu/drm/virtio/virtgpu_kms.c   |  4 ++
> >  drivers/gpu/drm/virtio/virtgpu_prime.c | 96 +++++++++++++++++++++++++-
> >  drivers/gpu/drm/virtio/virtgpu_vq.c    | 55 +++++++++++++++
> >  drivers/virtio/Makefile                |  2 +-
> >  drivers/virtio/virtio.c                |  6 ++
> >  drivers/virtio/virtio_dma_buf.c        | 82 ++++++++++++++++++++++
> >  include/linux/virtio.h                 |  1 +
> >  include/linux/virtio_dma_buf.h         | 37 ++++++++++
> >  include/uapi/linux/virtio_gpu.h        | 19 +++++
> >  11 files changed, 321 insertions(+), 4 deletions(-)
> >  create mode 100644 drivers/virtio/virtio_dma_buf.c
> >  create mode 100644 include/linux/virtio_dma_buf.h
> >
> > --
> > 2.27.0.278.ge193c7cf3a9-goog
>
>
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