[PATCH libdrm v2 1/2] etnaviv: sync uapi header

Philipp Zabel p.zabel at pengutronix.de
Mon Apr 10 08:48:41 UTC 2017


On Sat, 2017-04-08 at 20:55 +0100, Emil Velikov wrote:
> On 7 April 2017 at 13:06, Philipp Zabel <p.zabel at pengutronix.de> wrote:
> > Import the etnaviv header changes from kernel commits 9ad59fea162c
> > ("drm/etnaviv: submit support for in-fences") and 78ec187f64fa
> > ("drm/etnaviv: submit support for out-fences") for fence fd support.
> >
> > The drm_etnaviv_gem_submit structure was extended to include a flags
> > field, new flags for in-fence and out-fence fds and an input/output
> > fence fd field.
> >
> > This is one-way backwards compatible because old userspace code passing
> > a short structure not including the flags field to new kernels will
> > cause the remaining fields to be zero-filled. New userspace code must
> > make sure to only pass the short structure to old kernels, though.
> >
> > Not generated using make headers_install, since the drm/etnaviv_drm.h
> > uapi header is not installed yet by the kernel.
> IIRC all the other drivers should already install the header, so we
> want to fix this, right?
> If we're too late for this kernel cycle, we will land the patch as-is.

Yes, I'll send a kernel patch for the next cycle. For now I'll just
resend the patch as-is but with the new symbol added to symbol-check.

regards
Philipp



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