From mboxrd@z Thu Jan 1 00:00:00 1970 From: Greg Kroah-Hartman Subject: Re: [PATCH v2 09/16] driver core: add iommu device fault reporting data Date: Fri, 6 Oct 2017 07:43:16 +0200 Message-ID: <20171006054316.GA11608@kroah.com> References: <1507244624-39189-1-git-send-email-jacob.jun.pan@linux.intel.com> <1507244624-39189-10-git-send-email-jacob.jun.pan@linux.intel.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: Content-Disposition: inline In-Reply-To: <1507244624-39189-10-git-send-email-jacob.jun.pan-VuQAYsv1563Yd54FQh9/CA@public.gmane.org> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: iommu-bounces-cunTk1MwBs9QetFLy7KEm3xJsTq8ys+cHZ5vskTnxNA@public.gmane.org Errors-To: iommu-bounces-cunTk1MwBs9QetFLy7KEm3xJsTq8ys+cHZ5vskTnxNA@public.gmane.org To: Jacob Pan Cc: Lan Tianyu , Rafael Wysocki , LKML , iommu-cunTk1MwBs9QetFLy7KEm3xJsTq8ys+cHZ5vskTnxNA@public.gmane.org, David Woodhouse List-Id: iommu@lists.linux-foundation.org On Thu, Oct 05, 2017 at 04:03:37PM -0700, Jacob Pan wrote: > DMA faults can be detected by IOMMU at device level. Adding a pointer > to struct device allows IOMMU subsystem to report relevant faults > back to the device driver for further handling. > For direct assigned device (or user space drivers), guest OS holds > responsibility to handle and respond per device IOMMU fault. > Therefore we need fault reporting mechanism to propagate faults beyond > IOMMU subsystem. > > Signed-off-by: Jacob Pan Acked-by: Greg Kroah-Hartman