[Qemu-devel] virtio-gpu doesn't build if you do a linux-headers update from kvm/next

[Peter Maydell]

I tried to do a linux headers update against kvm/next (commit
197a4f4b063e4) with update-linux-headers.sh, but the result gives
a virtio-gpu that doesn't compile:

make: Entering directory
`/home/petmay01/linaro/qemu-from-laptop/qemu/build/all-debug'
  CC    aarch64-softmmu/hw/display/virtio-gpu.o
/home/petmay01/linaro/qemu-from-laptop/qemu/hw/display/virtio-gpu.c:
In function ‘virtio_gpu_get_features’:
/home/petmay01/linaro/qemu-from-laptop/qemu/hw/display/virtio-gpu.c:149:27:
error: ‘VIRTIO_GPU_FEATURE_VIRGL’ undeclared (first use in this
function)
         features |= (1 << VIRTIO_GPU_FEATURE_VIRGL);
                           ^
/home/petmay01/linaro/qemu-from-laptop/qemu/hw/display/virtio-gpu.c:149:27:
note: each undeclared identifier is reported only once for each
function it appears in
/home/petmay01/linaro/qemu-from-laptop/qemu/hw/display/virtio-gpu.c:
In function ‘virtio_gpu_set_features’:
/home/petmay01/linaro/qemu-from-laptop/qemu/hw/display/virtio-gpu.c:156:41:
error: ‘VIRTIO_GPU_FEATURE_VIRGL’ undeclared (first use in this
function)
     static const uint32_t virgl = (1 << VIRTIO_GPU_FEATURE_VIRGL);
                                         ^
/home/petmay01/linaro/qemu-from-laptop/qemu/hw/display/virtio-gpu.c:
In function ‘virtio_gpu_device_realize’:
/home/petmay01/linaro/qemu-from-laptop/qemu/hw/display/virtio-gpu.c:914:25:
error: ‘struct virtio_gpu_config’ has no member named ‘num_capsets’
         g->virtio_config.num_capsets = 1;
                         ^
/home/petmay01/linaro/qemu-from-laptop/qemu/hw/display/virtio-gpu.c:
At top level:
/home/petmay01/linaro/qemu-from-laptop/qemu/hw/display/virtio-gpu.c:1035:46:
error: invalid application of ‘sizeof’ to incomplete type ‘struct
virtio_gpu_transfer_host_3d’
 QEMU_BUILD_BUG_ON(sizeof(struct virtio_gpu_transfer_host_3d)        != 72);
                                              ^

etc, because all the virtio_gpu definitions disappear from
include/standard-headers/linux/virtio_gpu.h.

What's happening here?

thanks
-- PMM