[Bug 106708] [SKL/KBL/GLK] 2-3% performance drop in SynMark DrvState and 5-9% drop on SynMark Multithread

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=106708

Kenneth Graunke <kenneth at whitecape.org> changed:

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

--- Comment #2 from Kenneth Graunke <kenneth at whitecape.org> ---
Should be fixed by:

commit 3ac5fbadfd8644d30fce9ff267cb811ad157996a
Author: Chris Wilson <chris at chris-wilson.co.uk>
Date:   Tue May 29 17:28:07 2018 +0100

    i965: Only emit VF cache invalidations when the high bits changes

    Commit 92f01fc5f914 ("i965: Emit VF cache invalidates for 48-bit
    addressing bugs with softpin.") tried to only emit the VF invalidate if
    the high bits changed, but it accidentally always set need_invalidate to
    true; causing it to emit unconditionally emit the pipe control before
    every primitive.

    Fixes: 92f01fc5f914 ("i965: Emit VF cache invalidates for 48-bit addressing
bugs with softpin.")
    Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=106708
    Reviewed-by: Kenneth Graunke <kenneth at whitecape.org>

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