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Commit 058840c7 authored by Ben Widawsky's avatar Ben Widawsky Committed by Daniel Vetter
Browse files

drm/i915/bdw: Flush system agent on gen8 also 

gem_gtt_cpu_tlb seems to indicate that it is needed.

Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=72869



Signed-off-by: default avatarBen Widawsky <ben@bwidawsk.net>
Signed-off-by: default avatarDaniel Vetter <daniel.vetter@ffwll.ch>
parent d6e0a2dd

drivers/gpu/drm/i915/i915_gem_gtt.c

+0 −2
Original line number Diff line number Diff line
@@ -906,14 +906,12 @@ static void gen8_ggtt_insert_entries(struct i915_address_space *vm, 
		WARN_ON(readq(&gtt_entries[i-1])

			!= gen8_pte_encode(addr, level, true));



#if 0 /* TODO: Still needed on GEN8? */

	/* This next bit makes the above posting read even more important. We

	 * want to flush the TLBs only after we're certain all the PTE updates

	 * have finished.

	 */

	I915_WRITE(GFX_FLSH_CNTL_GEN6, GFX_FLSH_CNTL_EN);

	POSTING_READ(GFX_FLSH_CNTL_GEN6);

#endif

}



/*