[Bug 71328] [HSW] Stuck scanline wait on render

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=71328

Chris Wilson <chris at chris-wilson.co.uk> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEEDINFO                    |RESOLVED
         Resolution|---                         |FIXED

--- Comment #5 from Chris Wilson <chris at chris-wilson.co.uk> ---
commit 68cef6cd281572fcfb76a341dc45b7c8e5baffe6
Author: Chris Wilson <chris at chris-wilson.co.uk>
Date:   Thu Nov 7 13:09:25 2013 +0000

    sna/gen7: Request secure batches for Haswell vsync

    Since commit 8ff8eb2b38dc705f5c86f524c1cd74a811a7b04c
    Author: Chris Wilson <chris at chris-wilson.co.uk>
    Date:   Mon Sep 9 16:23:04 2013 +0100

        sna/hsw: Scanline waits require both DERRMR and forcewake

    we have been emitting LRI to enable vsync on the render ring. This
    requires a privileged batch buffer, and whilst we were checking for
    kernel support, we forgot to actually tell the kernel to submit the
    batch with the right privileges.

    Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=71328
    Signed-off-by: Chris Wilson <chris at chris-wilson.co.uk>

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