From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753330Ab2FHOrw (ORCPT ); Fri, 8 Jun 2012 10:47:52 -0400 Received: from fias.uni-frankfurt.de ([141.2.248.1]:41020 "EHLO fias.uni-frankfurt.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751124Ab2FHOrv convert rfc822-to-8bit (ORCPT ); Fri, 8 Jun 2012 10:47:51 -0400 Message-ID: <1339166867.3870.29.camel@blech> Subject: Re: [PATCH] uio_pci_generic does not export memory resources From: Dominic Eschweiler To: Alex Williamson Cc: Jan Kiszka , "Michael S. Tsirkin" , "Hans J. Koch" , Greg Kroah-Hartman , kvm@vger.kernel.org, linux-kernel@vger.kernel.org Date: Fri, 08 Jun 2012 16:47:47 +0200 In-Reply-To: <1339165009.26976.60.camel@ul30vt> References: <1339156616.3870.9.camel@blech> <20120608130351.GB1964@redhat.com> <4FD1FB49.3020905@siemens.com> <1339165009.26976.60.camel@ul30vt> Content-Type: text/plain; charset="UTF-8" X-Mailer: Evolution 3.2.3 Content-Transfer-Encoding: 8BIT Mime-Version: 1.0 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Am Freitag, den 08.06.2012, 08:16 -0600 schrieb Alex Williamson: > Yes, thanks Jan. This is exactly what VFIO does. VFIO provides > secure config space access, resource access, DMA mapping services, and > full interrupt support to userspace. I know about VFIO, but we need some support for that stuff relatively soon. That's the reason why I'm currently working on it to make UIO DMA capable. My extensions probably do not play well with IOMMUs and they therefore won't make it to mainline anyhow (i learned that today ;-). > I'm currently working to get this upstream, probably targeting 3.6 at > this point, and would love to have more users to help make that > happen. Yes, you are faster than I'm able to ask. 3.6 is a good target and really would like to support that. > Please take a look at the vfio-3.4 branch in the tree above. See this > tree for Qemu's usage of VFIO for device assignment ... OK, I take look at it and report back (off the list). Please write me an email if you need support. -- Gruß Dominic Frankfurt Institute for Advanced Studies (FIAS) Ruth-Moufang-Straße 1 D-60438 Frankfurt am Main Germany Phone: +49 69 79844114