From mboxrd@z Thu Jan 1 00:00:00 1970 From: Daniel Vetter Subject: Re: [PATCH 4/4] drm/i915: ILK + VT-d workaround Date: Tue, 18 Oct 2011 09:35:06 +0200 Message-ID: <20111018073506.GA2924@phenom.ffwll.local> References: <1318891915-29310-1-git-send-email-ben@bwidawsk.net> <1318891915-29310-5-git-send-email-ben@bwidawsk.net> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: Received: from mail-ww0-f43.google.com (mail-ww0-f43.google.com [74.125.82.43]) by gabe.freedesktop.org (Postfix) with ESMTP id 969A89E745 for ; Tue, 18 Oct 2011 00:34:26 -0700 (PDT) Received: by wwf10 with SMTP id 10so305543wwf.12 for ; Tue, 18 Oct 2011 00:34:25 -0700 (PDT) Content-Disposition: inline In-Reply-To: <1318891915-29310-5-git-send-email-ben@bwidawsk.net> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: intel-gfx-bounces+gcfxdi-intel-gfx=m.gmane.org@lists.freedesktop.org Errors-To: intel-gfx-bounces+gcfxdi-intel-gfx=m.gmane.org@lists.freedesktop.org To: Ben Widawsky Cc: intel-gfx@lists.freedesktop.org List-Id: intel-gfx@lists.freedesktop.org On Mon, Oct 17, 2011 at 03:51:55PM -0700, Ben Widawsky wrote: > Idle the GPU before doing any unmaps. We know if VT-d is in use through > an exported variable from iommu code. > > This should avoid a known HW issue. > > Signed-off-by: Ben Widawsky > --- Reviewed-by: Daniel Vetter -- Daniel Vetter Mail: daniel@ffwll.ch Mobile: +41 (0)79 365 57 48