From mboxrd@z Thu Jan 1 00:00:00 1970 From: bugzilla-daemon@freedesktop.org Subject: [Bug 101691] gfx corruption on windowed 3d-apps running on dGPU Date: Mon, 28 Aug 2017 08:41:52 +0000 Message-ID: References: Mime-Version: 1.0 Content-Type: multipart/mixed; boundary="===============1997853915==" Return-path: Received: from culpepper.freedesktop.org (culpepper.freedesktop.org [IPv6:2610:10:20:722:a800:ff:fe98:4b55]) by gabe.freedesktop.org (Postfix) with ESMTP id CEBA36E269 for ; Mon, 28 Aug 2017 08:41:51 +0000 (UTC) In-Reply-To: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" To: dri-devel@lists.freedesktop.org List-Id: dri-devel@lists.freedesktop.org --===============1997853915== Content-Type: multipart/alternative; boundary="15039097111.5CfAF1.23873"; charset="UTF-8" --15039097111.5CfAF1.23873 Date: Mon, 28 Aug 2017 08:41:51 +0000 MIME-Version: 1.0 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable X-Bugzilla-URL: http://bugs.freedesktop.org/ Auto-Submitted: auto-generated https://bugs.freedesktop.org/show_bug.cgi?id=3D101691 --- Comment #37 from Michel D=C3=A4nzer --- I wonder if it could be related to the caching attributes of the system mem= ory pages being shared between the GPUs. AFAICT the amdgpu driver should end up treating them as non-cacheable, and correspondingly program the AMD GPU not= to participate in cache coherency protocol for them. How does the i915 driver treat the pages of imported buffer objects? --=20 You are receiving this mail because: You are the assignee for the bug.= --15039097111.5CfAF1.23873 Date: Mon, 28 Aug 2017 08:41:51 +0000 MIME-Version: 1.0 Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable X-Bugzilla-URL: http://bugs.freedesktop.org/ Auto-Submitted: auto-generated

Comme= nt # 37 on bug 10169= 1 from Michel D=C3=A4nzer 
I wonder if it could be related to the caching attributes of t=
he system memory
pages being shared between the GPUs. AFAICT the amdgpu driver should end up
treating them as non-cacheable, and correspondingly program the AMD GPU not=
 to
participate in cache coherency protocol for them. How does the i915 driver
treat the pages of imported buffer objects?

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