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

[Peter Maydell]

On 5 November 2015 at 12:13, Gerd Hoffmann <address@hidden> wrote:
>> etc, because all the virtio_gpu definitions disappear from
>> include/standard-headers/linux/virtio_gpu.h.
>
> Updates not yet in mainline, they are sitting in drm-next and should
> land during the merge window (i.e. 4.4-rc1 should have them).
>
> I'd suggest to exclude virtio_gpu.h changes when updating linux headers
> for the time being.

I would strongly prefer it if we could get to a point where
we can say "kernel headers must only be updated from this tree"
and be guaranteed that it always works. This used to be true
with the tree in question being kvm/next, but it doesn't seem
to be so now. If it's going to be common that we have header
changes that don't go via kvm/next, maybe we need to coordinate
a tree that merges together the abi-guaranteed-stable changes
from different places before they hit mainline?

thanks
-- PMM