From mboxrd@z Thu Jan  1 00:00:00 1970
From: Jike Song <jike.song@intel.com>
Subject: Re: VFIO based vGPU(was Re: [Announcement] 2015-Q3 release of XenGT
 - a Mediated ...)
Date: Mon, 25 Jan 2016 19:34:22 +0800
Message-ID: <56A6083E.10703@intel.com>
References: <569C5071.6080004@intel.com>  <1453092476.32741.67.camel@redhat.com> <569CA8AD.6070200@intel.com> <1453143919.32741.169.camel@redhat.com> <569F4C86.2070501@intel.com> <AADFC41AFE54684AB9EE6CBC0274A5D15F786B4B@SHSMSX101.ccr.corp.intel.com>
Mime-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 7bit
Cc: "Tian, Kevin" <kevin.tian@intel.com>,
	Gerd Hoffmann <kraxel@redhat.com>,
	Paolo Bonzini <pbonzini@redhat.com>,
	"Lv, Zhiyuan" <zhiyuan.lv@intel.com>,
	"Ruan, Shuai" <shuai.ruan@intel.com>,
	"kvm@vger.kernel.org" <kvm@vger.kernel.org>,
	qemu-devel <qemu-devel@nongnu.org>,
	"igvt-g@lists.01.org" <igvt-g@ml01.01.org>
To: Alex Williamson <alex.williamson@redhat.com>
Return-path: <kvm-owner@vger.kernel.org>
Received: from mga01.intel.com ([192.55.52.88]:46038 "EHLO mga01.intel.com"
	rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP
	id S1756817AbcAYLeD (ORCPT <rfc822;kvm@vger.kernel.org>);
	Mon, 25 Jan 2016 06:34:03 -0500
In-Reply-To: <AADFC41AFE54684AB9EE6CBC0274A5D15F786B4B@SHSMSX101.ccr.corp.intel.com>
Sender: kvm-owner@vger.kernel.org
List-ID: <kvm.vger.kernel.org>

On 01/20/2016 05:05 PM, Tian, Kevin wrote:
> I would expect we can spell out next level tasks toward above
> direction, upon which Alex can easily judge whether there are
> some common VFIO framework changes that he can help :-)

Hi Alex,

Here is a draft task list after a short discussion w/ Kevin,
would you please have a look?

	Bus Driver

		{ in i915/vgt/xxx.c }

		- define a subset of vfio_pci interfaces
		- selective pass-through (say aperture)
		- trap MMIO: interface w/ QEMU

	IOMMU

		{ in a new vfio_xxx.c }

		- allocate: struct device & IOMMU group
		- map/unmap functions for vgpu
		- rb-tree to maintain iova/hpa mappings
		- interacts with kvmgt.c


	vgpu instance management

		{ in i915 }

		- path, create/destroy


--
Thanks,
Jike