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    SubjectRe: [PATCH v6 0/9] Fix cursor planes with virtualized drivers
    Date
    Albert Esteve <aesteve@redhat.com> writes:

    > v6: Shift DRIVER_CURSOR_HOTSPOT flag bit to BIT(9), since BIT(8)
    > was already taken by DRIVER_GEM_GPUVA.
    >
    > v5: Add a change with documentation from Michael, based on his discussion
    > with Pekka and bump the kernel version DRM_CLIENT_CAP_CURSOR_PLANE_HOTSPOT
    > might be introduced with to 6.6.
    >
    > v4: Make drm_plane_create_hotspot_properties static, rename
    > DRM_CLIENT_CAP_VIRTUALIZED_CURSOR_PLANE to DRM_CLIENT_CAP_CURSOR_PLANE_HOTSPOT
    > and some minor stylistic fixes for things found by Javier and Pekka
    > in v3.
    >
    > v3: Renames, fixes and cleanups suggested by Daniel, Simon and Pekka
    > after v2. There's no major changes in functionality. Please let me know
    > if I missed anything, it's been a while since v2.
    >
    > Virtualized drivers have had a lot of issues with cursor support on top
    > of atomic modesetting. This set both fixes the long standing problems
    > with atomic kms and virtualized drivers and adds code to let userspace
    > use atomic kms on virtualized drivers while preserving functioning
    > seamless cursors between the host and guest.
    >
    > The first change in the set is one that should be backported as far as
    > possible, likely 5.4 stable, because earlier stable kernels do not have
    > virtualbox driver. The change makes virtualized drivers stop exposing
    > a cursor plane for atomic clients, this fixes mouse cursor on all well
    > formed compositors which will automatically fallback to software cursor.
    >
    > The rest of the changes until the last one ports the legacy hotspot code
    > to atomic plane properties.
    >
    > Finally the last change introduces userspace API to let userspace
    > clients advertise the fact that they are aware of additional restrictions
    > placed upon the cursor plane by virtualized drivers and lets them use
    > atomic kms with virtualized drivers (the clients are expected to set
    > hotspots correctly when advertising support for virtual cursor plane).
    >
    > Link to the IGT test covering this patch (already merged):
    > https://lists.freedesktop.org/archives/igt-dev/2023-July/058427.html
    >
    > Mutter patch:
    > https://lists.freedesktop.org/archives/igt-dev/2023-July/058427.html
    >
    > Michael Banack (1):
    > drm: Introduce documentation for hotspot properties
    >
    > Zack Rusin (8):
    > drm: Disable the cursor plane on atomic contexts with virtualized
    > drivers
    > drm/atomic: Add support for mouse hotspots
    > drm/vmwgfx: Use the hotspot properties from cursor planes
    > drm/qxl: Use the hotspot properties from cursor planes
    > drm/vboxvideo: Use the hotspot properties from cursor planes
    > drm/virtio: Use the hotspot properties from cursor planes
    > drm: Remove legacy cursor hotspot code
    > drm: Introduce DRM_CLIENT_CAP_CURSOR_PLANE_HOTSPOT
    >

    Pushed to drm-misc (drm-misc-next). Thanks!

    --
    Best regards,

    Javier Martinez Canillas
    Core Platforms
    Red Hat

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