From mboxrd@z Thu Jan 1 00:00:00 1970 From: Joerg Roedel Subject: Re: AMD-Vi: Event logged [INVALID_DEVICE_REQUEST device=00:14.0 address=0x000000fdf9103300 flags=0x0600] Date: Wed, 14 Oct 2015 11:06:49 +0200 Message-ID: <20151014090649.GI27420@8bytes.org> References: Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: Content-Disposition: inline In-Reply-To: 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: "G. Richard Bellamy" Cc: iommu-cunTk1MwBs9QetFLy7KEm3xJsTq8ys+cHZ5vskTnxNA@public.gmane.org List-Id: iommu@lists.linux-foundation.org On Sat, Oct 03, 2015 at 05:19:25PM -0700, G. Richard Bellamy wrote: > What happens: Kernel logs message to journal, kvm VMs no longer work. Kernel messages spew at a rate of ~660/sec. The problem is that device 00:14.0 is trying to write to the system management area and is forbidden to do so by the IOMMU. Can you please boot with amd_iommu_dump on the kernel command line and send me dmesg? Thanks, Joerg