[Mesa-stable] [Mesa-dev] [PATCH] i965: store reference to the context within struct brw_fence

[Marek Olšák]

On Mon, Sep 28, 2015 at 1:29 PM, Emil Velikov <emil.l.velikov at gmail.com> wrote:
> As the spec allows for {server,client}_wait_sync to be called without
> currently bound context, while our implementation requires context
> pointer.
>
> UNTESTED.
>
> Cc: Chad Versace <chad.versace at intel.com>
> Cc: Marek Olšák <marek.olsak at amd.com>
> Cc: Chih-Wei Huang <cwhuang at android-x86.org>
> Cc: Mauro Rossi <issor.oruam at gmail.com>
> Cc: 10.6 11.0 <mesa-stable at lists.freedesktop.org>
> Signed-off-by: Emil Velikov <emil.l.velikov at gmail.com>
> ---
>
> Upon second thought I'm leaning that we should move this to the API
> specific library (i.e. libEGL) rather than keeping it here. It will give
> us remove API specific from the DRI extension, plus it'll give us better
> mix'n'match (loader+dri module) compatibility.
>
> How do you guys feel on the topic ?

I don't think there is anything to move into libEGL. st/dri doesn't
add a context pointer to the fence, instead it adds a screen pointer,
which is a different thing.

This i965 fix is probably not thread-safe, because eglClientWaitSync
can be called from another thread and contexts typically contain no
locks.

Marek