From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751598AbeFEBZm (ORCPT ); Mon, 4 Jun 2018 21:25:42 -0400 Received: from mx3-rdu2.redhat.com ([66.187.233.73]:54030 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1751295AbeFEBZk (ORCPT ); Mon, 4 Jun 2018 21:25:40 -0400 Date: Tue, 5 Jun 2018 04:25:37 +0300 From: "Michael S. Tsirkin" To: Benjamin Herrenschmidt Cc: Anshuman Khandual , virtualization@lists.linux-foundation.org, linux-kernel@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, aik@ozlabs.ru, robh@kernel.org, joe@perches.com, elfring@users.sourceforge.net, david@gibson.dropbear.id.au, jasowang@redhat.com, mpe@ellerman.id.au, hch@infradead.org Subject: Re: [RFC V2] virtio: Add platform specific DMA API translation for virito devices Message-ID: <20180605042229-mutt-send-email-mst@kernel.org> References: <20180522063317.20956-1-khandual@linux.vnet.ibm.com> <20180523213703-mutt-send-email-mst@kernel.org> <20180604153558-mutt-send-email-mst@kernel.org> <20180604184035-mutt-send-email-mst@kernel.org> <6164442a718645a754879eac5c4c5fad9283c211.camel@kernel.crashing.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <6164442a718645a754879eac5c4c5fad9283c211.camel@kernel.crashing.org> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Tue, Jun 05, 2018 at 09:26:56AM +1000, Benjamin Herrenschmidt wrote: > I would like to keep however the ability to bypass the iommu for > performance reasons So that's easy, clear the IOMMU flag and this means "bypass the IOMMU". -- MST