linux-kernel - Re: [PATCH 0/5] virgl: fence fd support

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Date:   Wed, 31 Oct 2018 09:45:05 +0000
From:   Emil Velikov <emil.l.velikov@...il.com>
To:     Robert Foss <robert.foss@...labora.com>
Cc:     David Airlie <airlied@...ux.ie>, Gerd Hoffmann <kraxel@...hat.com>,
        ML dri-devel <dri-devel@...ts.freedesktop.org>,
        "open list:VIRTIO GPU DRIVER" 
        <virtualization@...ts.linux-foundation.org>,
        "Linux-Kernel@...r. Kernel. Org" <linux-kernel@...r.kernel.org>,
        Rob Herring <robh@...nel.org>,
        Gustavo Padovan <gustavo.padovan@...labora.com>,
        Emil Velikov <emil.velikov@...labora.com>
Subject: Re: [PATCH 0/5] virgl: fence fd support

Hi Rob,

On Thu, 25 Oct 2018 at 19:37, Robert Foss <robert.foss@...labora.com> wrote:
>
> This series implements fence support for drm/virtio and
> has been tested using qemu, kmscube and the below branches.
>
> Rob Herring solved a reference counting issue and
> suggested a context check for the execbuf ioctl, his
> changes have been included in the below commits to
> keep the tree working at all commits.
>
I've put forward some mostly minor suggestions.
The patches look pretty good but there's one piece missing:

>
> The linux series can be found here:
> https://gitlab.collabora.com/robertfoss/linux/commits/virtio_fences_v3
>
> As for mesa, the branch can be found here:
> https://gitlab.collabora.com/robertfoss/mesa/commits/virtio_fences_v3
>
Namely: This should be out for review. The kernel and userspace side
of IOCTLs should happen roughly at the same time.
Otherwise, there's a huge chance of merging one side of the component,
while the other needs architectural changes.

HTH
Emil