From mboxrd@z Thu Jan 1 00:00:00 1970 From: bugzilla-daemon@freedesktop.org Subject: [Bug 91278] Tonga GPU lock/reset fail with Unigine Valley Date: Thu, 15 Oct 2015 13:51:02 +0000 Message-ID: References: Mime-Version: 1.0 Content-Type: multipart/mixed; boundary="===============2037788707==" Return-path: Received: from culpepper.freedesktop.org (unknown [131.252.210.165]) by gabe.freedesktop.org (Postfix) with ESMTP id 5C8766EE89 for ; Thu, 15 Oct 2015 06:51:02 -0700 (PDT) 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 --===============2037788707== Content-Type: multipart/alternative; boundary="1444917062.ec60D8D2.1309"; charset="UTF-8" --1444917062.ec60D8D2.1309 Date: Thu, 15 Oct 2015 13:51:02 +0000 MIME-Version: 1.0 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable https://bugs.freedesktop.org/show_bug.cgi?id=3D91278 --- Comment #43 from Christian K=C3=B6nig --- (In reply to Alex Deucher from comment #42) > (In reply to Mathias Tillman from comment #41) > > Just tried it again with the latest drm-next-4.4 and the kernel paramet= ers > > amdgpu.enable_scheduler=3D0 amdgpu.vm_debug=3D1 amdgpu.enable_semaphore= s=3D1. >=20 > I don't think forcing semaphores will work on tonga/fiji since there were > disabled in the code a while ago due to hw bugs. Yeah, forcefully enabling semaphores on Tonga will crash rather fast. The purpose of vm_debug !=3D 0 is to stop after the first VM fault. So if you got a VM fault from time to time which was just ignored than sett= ing vm_debug will certainly crash the system. On the other hand you shouldn't get VM faults in the first place. --=20 You are receiving this mail because: You are the assignee for the bug. --1444917062.ec60D8D2.1309 Date: Thu, 15 Oct 2015 13:51:02 +0000 MIME-Version: 1.0 Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable

Commen= t # 43 on bug 91278<= /a> from Christian K=C3=B6nig 
(In reply to Alex Deucher from comment #42)
> (In reply to Mathias Tillman from comment #41)
> > Just tried it again with the latest drm-next-4.4 and the kernel p=
arameters
> > amdgpu.enable_scheduler=3D0 amdgpu.vm_debug=3D1 amdgpu.enable_sem=
aphores=3D1.
>=20
> I don't think forcing semaphores will work on tonga/fiji since there w=
ere
> disabled in the code a while ago due to hw bugs.

Yeah, forcefully enabling semaphores on Tonga will crash rather fast.

The purpose of vm_debug !=3D 0 is to stop after the first VM fault.

So if you got a VM fault from time to time which was just ignored than sett=
ing
vm_debug will certainly crash the system.

On the other hand you shouldn't get VM faults in the first place.

You are receiving this mail because: =20=20=20=20=20=20
  • You are the assignee for the bug.
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