drm/virtio: set fb_modifiers_not_supported
Chia-I Wu authored
Without this, the drm core advertises LINEAR modifier which is
incorrect.

Also userspace virgl does not support modifiers.  For example, it causes
chrome on ozone/drm to fail with "Failed to create scanout buffer".

Fixes: 2af10429

 ("drm: introduce fb_modifiers_not_supported flag in mode_config")
Suggested-by: default avatarShao-Chuan Lee <shaochuan@chromium.org>
Signed-off-by: default avatarChia-I Wu <olvaffe@gmail.com>
Link: http://patchwork.freedesktop.org/patch/msgid/20220831190601.1295129-1-olvaffe@gmail.com

Signed-off-by: default avatarGerd Hoffmann <kraxel@redhat.com>
85faca8c
Linux kernel
============

There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.

In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``.  The formatted documentation can also be read online at:

    https://www.kernel.org/doc/html/latest/

There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.

Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.