[PATCH v2 0/5] Fixes and improvements for Xen pvdrm

[Oleksandr Andrushchenko]

Juergen, Boris,

can we please merge these via Xen Linux tree as I have collected enough Ack/R-b?

The series has DRM patches, but those anyway are Xen related, so I think

this should be fine from DRI point of view.

Thank you,

Oleksandr

On 8/13/20 9:21 AM, Oleksandr Andrushchenko wrote:
> From: Oleksandr Andrushchenko <oleksandr_andrushchenko at epam.com>
>
> Hello,
>
> This series contains an assorted set of fixes and improvements for
> the Xen para-virtualized display driver and grant device driver which
> I have collected over the last couple of months:
>
> 1. Minor fixes to grant device driver and drm/xen-front.
>
> 2. New format (YUYV) added to the list of the PV DRM supported formats
> which allows the driver to be used in zero-copying use-cases when
> a camera device is the source of the dma-bufs.
>
> 3. Synchronization with the latest para-virtualized protocol definition
> in Xen [1].
>
> 4. SGT offset is now propagated to the backend: while importing a dmabuf
> it is possible that the data of the buffer is put with offset which is
> indicated by the SGT offset. This is needed for some GPUs which have
> non-zero offset.
>
> Thank you,
> Oleksandr Andrushchenko
>
> [1] https://urldefense.com/v3/__https://xenbits.xen.org/gitweb/?p=xen.git;a=commit;h=c27a184225eab54d20435c8cab5ad0ef384dc2c0__;!!GF_29dbcQIUBPA!iAHOdk4M167VNM1AypMGVmyKJu-iqC9e5cXyu6N595Np3iyIZDnZl0MIBX3IROJSD1GSMX_GfQ$ [xenbits[.]xen[.]org]
>
> Changes since v1:
> =================
>
> 1. Removed patch which adds EDID to PV DRM as it needs more time for review:
> "5. Version 2 of the Xen displif protocol adds XENDISPL_OP_GET_EDID
> request which allows frontends to request EDID structure per
> connector. This request is optional and if not supported by the
> backend then visible area is still defined by the relevant
> XenStore's "resolution" property.
> If backend provides EDID with XENDISPL_OP_GET_EDID request then
> its values must take precedence over the resolutions defined in
> XenStore."
> I will send this as a dedicated patch.
>
> 2. Added missing CC stable for the patches with fixes
>
> Oleksandr Andrushchenko (5):
>    xen/gntdev: Fix dmabuf import with non-zero sgt offset
>    drm/xen-front: Fix misused IS_ERR_OR_NULL checks
>    drm/xen-front: Add YUYV to supported formats
>    xen: Sync up with the canonical protocol definition in Xen
>    drm/xen-front: Pass dumb buffer data offset to the backend
>
>   drivers/gpu/drm/xen/xen_drm_front.c      | 10 +--
>   drivers/gpu/drm/xen/xen_drm_front.h      |  2 +-
>   drivers/gpu/drm/xen/xen_drm_front_conn.c |  1 +
>   drivers/gpu/drm/xen/xen_drm_front_gem.c  | 11 +--
>   drivers/gpu/drm/xen/xen_drm_front_kms.c  |  2 +-
>   drivers/xen/gntdev-dmabuf.c              |  8 +++
>   include/xen/interface/io/displif.h       | 91 +++++++++++++++++++++++-
>   7 files changed, 111 insertions(+), 14 deletions(-)
>