From mboxrd@z Thu Jan 1 00:00:00 1970 From: bugzilla-daemon@freedesktop.org Subject: [Bug 62959] r600g (HD 6950 Cayman) fails piglit tests and hangs system Date: Thu, 11 Apr 2013 13:45:05 +0000 Message-ID: References: Mime-Version: 1.0 Content-Type: multipart/mixed; boundary="===============0469395893==" Return-path: Received: from culpepper.freedesktop.org (unknown [131.252.210.165]) by gabe.freedesktop.org (Postfix) with ESMTP id 2C05DE610D for ; Thu, 11 Apr 2013 06:45:05 -0700 (PDT) In-Reply-To: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: dri-devel-bounces+sf-dri-devel=m.gmane.org@lists.freedesktop.org Errors-To: dri-devel-bounces+sf-dri-devel=m.gmane.org@lists.freedesktop.org To: dri-devel@lists.freedesktop.org List-Id: dri-devel@lists.freedesktop.org --===============0469395893== Content-Type: multipart/alternative; boundary="1365687904.e3aA3b4C0.17850"; charset="us-ascii" --1365687904.e3aA3b4C0.17850 Date: Thu, 11 Apr 2013 13:45:04 +0000 MIME-Version: 1.0 Content-Type: text/plain; charset="UTF-8" https://bugs.freedesktop.org/show_bug.cgi?id=62959 --- Comment #33 from Alex Deucher --- (In reply to comment #32) > Attachment 77608 [details] fixes the lockups, which suggests the DRM driver > doesn't actually flush caches when it should. radeon_ring_vm_flush() doesn't actually flush caches per se, it writes the new VM page table base address, so presumably we are not handling last_flush properly somewhere which results in a stale VM page table pointer. -- You are receiving this mail because: You are the assignee for the bug. --1365687904.e3aA3b4C0.17850 Date: Thu, 11 Apr 2013 13:45:04 +0000 MIME-Version: 1.0 Content-Type: text/html; charset="UTF-8"

Comment # 33 on bug 62959 from 
(In reply to comment #32)
> Attachment 77608 [details] fixes the lockups, which suggests the DRM driver
> doesn't actually flush caches when it should.

radeon_ring_vm_flush() doesn't actually flush caches per se, it writes the new
VM page table base address, so presumably we are not handling last_flush
properly somewhere which results in a stale VM page table pointer.

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  • You are the assignee for the bug.
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