Feeling a bit nervous putting the full live migration support
patch (https://patchwork.ozlabs.org/patch/606902/) in that
late in the 2.6 devel cycle as it carries some non-trivial
changes.  So disable migration in case virtio-gpu is present
for now.
Signed-off-by: NGerd Hoffmann <kraxel@redhat.com>

Add a the new qemu_create_displaysurface_pixman function, to create
a DisplaySurface backed by an existing pixman image.  In that case
there is no need to create a new pixman image pointing to the same
backing storage.  We can just use the existing image directly.

This does not only simplify things a bit, but most importantly it
gets the reference counting right, so the backing storage for the
pixman image wouldn't be released underneath us.

Use new function in virtio-gpu, where using it actually fixes
use-after-free crashes.

Cc: qemu-stable@nongnu.org
Signed-off-by: NGerd Hoffmann <kraxel@redhat.com>
Message-id: 1459499240-742-1-git-send-email-kraxel@redhat.com

The return code of virtqueue_pop/vring_pop is unused except to check for
errors or 0.  We can thus easily move allocation inside the functions
and just return a pointer to the VirtQueueElement.

The advantage is that we will be able to allocate only the space that
is needed for the actual size of the s/g list instead of the full
VIRTQUEUE_MAX_SIZE items.  Currently VirtQueueElement takes about 48K
of memory, and this kind of allocation puts a lot of stress on malloc.
By cutting the size by two or three orders of magnitude, malloc can
use much more efficient algorithms.

The patch is pretty large, but changes to each device are testable
more or less independently.  Splitting it would mostly add churn.
Signed-off-by: NPaolo Bonzini <pbonzini@redhat.com>
Reviewed-by: NMichael S. Tsirkin <mst@redhat.com>
Signed-off-by: NMichael S. Tsirkin <mst@redhat.com>
Reviewed-by: NCornelia Huck <cornelia.huck@de.ibm.com>

Wire up gl_block callback, so ui code can request to stop
virtio-gpu rendering.
Signed-off-by: NGerd Hoffmann <kraxel@redhat.com>

So we can stop rendering for a while in case we have to.
Signed-off-by: NGerd Hoffmann <kraxel@redhat.com>
Reviewed-by: NMarc-André Lureau <marcandre.lureau@redhat.com>

We'll go take out the commands we receive out of the virt queue and put
them into a linked list, to decouple virtio queue handling from actual
command processing.

Also move cmd processing to new virtio_gpu_handle_ctrl func, so we can
easily kick it from different places.
Signed-off-by: NGerd Hoffmann <kraxel@redhat.com>

Clean up includes so that osdep.h is included first and headers
which it implies are not included manually.

This commit was created with scripts/clean-includes.
Signed-off-by: NPeter Maydell <peter.maydell@linaro.org>
Message-id: 1453832250-766-15-git-send-email-peter.maydell@linaro.org

Signed-off-by: NPaolo Bonzini <pbonzini@redhat.com>

Signed-off-by: NGerd Hoffmann <kraxel@redhat.com>
Reviewed-by: NMarc-André Lureau <marcandre.lureau@redhat.com>

Add virglrenderer library detection.  Add 3d mode to virtio-gpu,
wire up virglrenderer library.  When in 3d mode render using the
new context management and texture scanout callbacks.
Signed-off-by: NGerd Hoffmann <kraxel@redhat.com>
Reviewed-by: NMax Reitz <mreitz@redhat.com>

Signed-off-by: NGerd Hoffmann <kraxel@redhat.com>

For symmetry reasons: virtio_gpu_create_mapping_iov() allocates it so
virtio_gpu_cleanup_mapping_iov() should free it, otherwise it's easy to
miss a free() needed and leak memory.
Signed-off-by: NGerd Hoffmann <kraxel@redhat.com>
Reviewed-by: NMax Reitz <mreitz@redhat.com>

Signed-off-by: NJason Wang <jasowang@redhat.com>
Reviewed-by: NMichael S. Tsirkin <mst@redhat.com>
Signed-off-by: NMichael S. Tsirkin <mst@redhat.com>
Acked-by: NPaolo Bonzini <pbonzini@redhat.com>

Switch over to virtio_instance_init_common.  Drop duplicate properties
in virtio-gpu-pci and virtio-vga as they are properly aliased now.  Also
drop the indirection via DEFINE_VIRTIO_GPU_PROPERTIES, we don't need it
any more as the properties are defined in a single place now.
Signed-off-by: NGerd Hoffmann <kraxel@redhat.com>

iov limit was raised, but the error message still has the old limit ...
Signed-off-by: NGerd Hoffmann <kraxel@redhat.com>

This patch adds the core code for virtio gpu emulation,
covering 2d support.

Written by Dave Airlie and Gerd Hoffmann.
Signed-off-by: NDave Airlie <airlied@redhat.com>
Signed-off-by: NGerd Hoffmann <kraxel@redhat.com>