From mboxrd@z Thu Jan 1 00:00:00 1970 From: Joerg Roedel Subject: Re: [PATCH 1/2] iommu: Add config option to set passthrough as default Date: Fri, 20 Jul 2018 14:16:19 +0200 Message-ID: <20180720121619.pqrgth4zxdj7zjym@8bytes.org> References: <20180711205936.18614-1-olof@lixom.net> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: Content-Disposition: inline In-Reply-To: <20180711205936.18614-1-olof-nZhT3qVonbNeoWH0uzbU5w@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: Olof Johansson Cc: iommu-cunTk1MwBs9QetFLy7KEm3xJsTq8ys+cHZ5vskTnxNA@public.gmane.org, linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org List-Id: iommu@lists.linux-foundation.org Hi Olof, On Wed, Jul 11, 2018 at 01:59:35PM -0700, Olof Johansson wrote: > +config IOMMU_DEFAULT_PASSTHROUGH > + bool "IOMMU passthrough by default" > + depends on IOMMU_API > + help > + Enable passthrough by default (removing the need to pass in > + iommu.passthrough=on through command line). If this is enabled, > + you can still disable with iommu.passthrough=off > + > + If unsure, say N here. > + The patch is a good start, but the description above indicates that it affects all IOMMU driver, which it does not. Please make the Intel and AMD IOMMU drivers also take this option into account. Joerg