From 058840c7a06bc7d6825caae7c7f9c4759b24aaa5 Mon Sep 17 00:00:00 2001 From: Ben Widawsky <benjamin.widawsky@intel.com> Date: Tue, 24 Dec 2013 15:18:54 -0800 Subject: [PATCH] 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: Ben Widawsky <ben@bwidawsk.net> Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch> --- drivers/gpu/drm/i915/i915_gem_gtt.c | 2 -- 1 file changed, 2 deletions(-) diff --git a/drivers/gpu/drm/i915/i915_gem_gtt.c b/drivers/gpu/drm/i915/i915_gem_gtt.c index c79dd2b1f70ec..d3c3b5b15824e 100644 --- a/drivers/gpu/drm/i915/i915_gem_gtt.c +++ b/drivers/gpu/drm/i915/i915_gem_gtt.c @@ -906,14 +906,12 @@ static void gen8_ggtt_insert_entries(struct i915_address_space *vm, WARN_ON(readq(>t_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 } /*