From mboxrd@z Thu Jan 1 00:00:00 1970 From: Ben Widawsky Subject: [PATCH] drm/i915: Allow full PPGTT with param override Date: Mon, 24 Mar 2014 18:06:00 -0700 Message-ID: <1395709560-19686-1-git-send-email-benjamin.widawsky@linux.intel.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: Received: from mga11.intel.com (mga11.intel.com [192.55.52.93]) by gabe.freedesktop.org (Postfix) with ESMTP id A1C4189FE3 for ; Mon, 24 Mar 2014 18:06:13 -0700 (PDT) List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" To: Intel GFX List-Id: intel-gfx@lists.freedesktop.org When PPGTT was disabled by default, the patch also prevented the user from overriding this behavior via module parameter. Being able to test this on arbitrary kernels is extremely beneficial to track down the remaining bugs. The patch that prevented this was: commit 93a25a9e2d67765c3092bfaac9b855d95e39df97 Author: Daniel Vetter Date: Thu Mar 6 09:40:43 2014 +0100 drm/i915: Disable full ppgtt by default By default PPGTT is set to -1. 0 means off, 1 means aliasing only, 2 means full, all other values are reserved. Signed-off-by: Ben Widawsky --- drivers/gpu/drm/i915/i915_gem_gtt.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/gpu/drm/i915/i915_gem_gtt.c b/drivers/gpu/drm/i915/i915_gem_gtt.c index bbc9420..9068628 100644 --- a/drivers/gpu/drm/i915/i915_gem_gtt.c +++ b/drivers/gpu/drm/i915/i915_gem_gtt.c @@ -50,7 +50,7 @@ bool intel_enable_ppgtt(struct drm_device *dev, bool full) /* Full ppgtt disabled by default for now due to issues. */ if (full) - return false; /* HAS_PPGTT(dev) */ + return HAS_PPGTT(dev) && (i915.enable_ppgtt == 2); else return HAS_ALIASING_PPGTT(dev); } -- 1.9.1