Re: [Xen-devel] [iGVT-g] [vfio-users] [PATCH v3 00/11] igd passthrough chipset tweaks

2016-02-02 Thread Alex Williamson
On Tue, 2016-02-02 at 19:10 +, Kay, Allen M wrote: >  > > -Original Message- > > From: Tian, Kevin > > Sent: Monday, February 01, 2016 11:08 PM > > To: Kay, Allen M; Alex Williamson; Gerd Hoffmann; qemu-de...@nongnu.org > > Cc: igv...@ml01.01.org; xen-d

Re: [Xen-devel] [Qemu-devel] [iGVT-g] [vfio-users] [PATCH v3 00/11] igd passthrough chipset tweaks

2016-02-02 Thread Alex Williamson
On Tue, 2016-02-02 at 11:31 -0500, Kevin O'Connor wrote: > On Tue, Feb 02, 2016 at 09:56:20AM +0100, Gerd Hoffmann wrote: > >   Hi, > >  > > > > I'd have qemu copy the data on 0xfc write then, so things continue to > > > > work without updating seabios.  So, the firmware has to allocate space, > >

Re: [Xen-devel] [iGVT-g] [vfio-users] [PATCH v3 00/11] igd passthrough chipset tweaks

2016-02-02 Thread Alex Williamson
On Tue, 2016-02-02 at 00:04 +, Kay, Allen M wrote: >  > > -Original Message- > > From: Alex Williamson [mailto:alex.william...@redhat.com] > > Sent: Sunday, January 31, 2016 9:42 AM > > To: Kay, Allen M; Gerd Hoffmann; David Woodhouse > &g

Re: [Xen-devel] [iGVT-g] [vfio-users] [PATCH v3 00/11] igd passthrough chipset tweaks

2016-02-02 Thread Alex Williamson
On Tue, 2016-02-02 at 11:50 +, David Woodhouse wrote: > On Tue, 2016-02-02 at 06:42 +, Tian, Kevin wrote: > > > From: Kay, Allen M > > > Sent: Tuesday, February 02, 2016 8:04 AM > > > >  > > > > David notes in the latter commit above: > > > >  > > > > "We should be able to successfully

Re: [Xen-devel] [vfio-users] [PATCH v3 00/11] igd passthrough chipset tweaks

2016-02-01 Thread Alex Williamson
On Mon, 2016-02-01 at 13:49 +0100, Gerd Hoffmann wrote: > > > Maybe we should define the interface as "guest writes 0xfc to pick > > > address, qemu takes care to place opregion there".  That gives us the > > > freedom to change the qemu implementation (either copy host opregion or > > > map the

Re: [Xen-devel] [iGVT-g] [vfio-users] [PATCH v3 00/11] igd passthrough chipset tweaks

2016-01-31 Thread Alex Williamson
On Sat, 2016-01-30 at 01:18 +, Kay, Allen M wrote: >  > > -Original Message- > > From: iGVT-g [mailto:igvt-g-boun...@lists.01.org] On Behalf Of Alex > > Williamson > > Sent: Friday, January 29, 2016 10:00 AM > > To: Gerd Hoffmann &

Re: [Xen-devel] [vfio-users] [PATCH v3 00/11] igd passthrough chipset tweaks

2016-01-29 Thread Alex Williamson
On Fri, 2016-01-29 at 08:09 +0100, Gerd Hoffmann wrote: >   Hi, >  > > 1) The OpRegion MemoryRegion is mapped into system_memory through > > programming of the 0xFC config space register. > >  a) vfio-pci could pick an address to do this as it is realized. > >  b) SeaBIOS/OVMF could program this.

Re: [Xen-devel] [vfio-users] [PATCH v3 00/11] igd passthrough chipset tweaks

2016-01-28 Thread Alex Williamson
On Tue, 2016-01-05 at 12:41 +0100, Gerd Hoffmann wrote: >   Hi, >  > We have some code in our tree to support pci passthrough of intel > graphics devices (igd) on xen, which requires some chipset tweaks > for (a) the host bridge and (b) the lpc/isa-bridge to meat the > expectations of the guest

Re: [Xen-devel] [iGVT-g] [vfio-users] [PATCH v3 00/11] igd passthrough chipset tweaks

2016-01-28 Thread Alex Williamson
On Fri, 2016-01-29 at 02:22 +, Kay, Allen M wrote: >  > > -Original Message- > > From: iGVT-g [mailto:igvt-g-boun...@lists.01.org] On Behalf Of Alex > > Williamson > > Sent: Thursday, January 28, 2016 11:36 AM > > To: Gerd Hoffmann; qemu-de...@nongnu.or

Re: [Xen-devel] [Intel-gfx] [Announcement] 2015-Q3 release of XenGT - a Mediated Graphics Passthrough Solution from Intel

2015-11-20 Thread Alex Williamson
On Fri, 2015-11-20 at 07:09 +, Tian, Kevin wrote: > > From: Alex Williamson [mailto:alex.william...@redhat.com] > > Sent: Friday, November 20, 2015 4:03 AM > > > > > > > > > > The proposal is therefore that GPU vendors can expose vGPUs to > >

Re: [Xen-devel] [Intel-gfx] [Announcement] 2015-Q3 release of XenGT - a Mediated Graphics Passthrough Solution from Intel

2015-11-20 Thread Alex Williamson
On Fri, 2015-11-20 at 13:51 +0800, Jike Song wrote: > On 11/20/2015 12:22 PM, Alex Williamson wrote: > > On Fri, 2015-11-20 at 10:58 +0800, Jike Song wrote: > >> On 11/19/2015 11:52 PM, Alex Williamson wrote: > >>> On Thu, 2015-11-19 at 15:32 +, Stefano Stabellin

Re: [Xen-devel] [Intel-gfx] [Announcement] 2015-Q3 release of XenGT - a Mediated Graphics Passthrough Solution from Intel

2015-11-20 Thread Alex Williamson
On Fri, 2015-11-20 at 08:10 +, Tian, Kevin wrote: > > From: Tian, Kevin > > Sent: Friday, November 20, 2015 3:10 PM > > > > > > > > > > > The proposal is therefore that GPU vendors can expose vGPUs to > > > > > userspace, and thus to QEMU, using the VFIO API. For instance, vfio > > > > >

Re: [Xen-devel] [Intel-gfx] [Announcement] 2015-Q3 release of XenGT - a Mediated Graphics Passthrough Solution from Intel

2015-11-19 Thread Alex Williamson
Hi Kevin, On Thu, 2015-11-19 at 04:06 +, Tian, Kevin wrote: > > From: Alex Williamson [mailto:alex.william...@redhat.com] > > Sent: Thursday, November 19, 2015 2:12 AM > > > > [cc +qemu-devel, +paolo, +gerd] > > > > On Tue, 2015-10-27 at 17:25

Re: [Xen-devel] [Intel-gfx] [Announcement] 2015-Q3 release of XenGT - a Mediated Graphics Passthrough Solution from Intel

2015-11-19 Thread Alex Williamson
On Fri, 2015-11-20 at 10:58 +0800, Jike Song wrote: > On 11/19/2015 11:52 PM, Alex Williamson wrote: > > On Thu, 2015-11-19 at 15:32 +, Stefano Stabellini wrote: > >> On Thu, 19 Nov 2015, Jike Song wrote: > >>> Hi Alex, thanks for the discussion. > >>&g

Re: [Xen-devel] [Intel-gfx] [Announcement] 2015-Q3 release of XenGT - a Mediated Graphics Passthrough Solution from Intel

2015-11-19 Thread Alex Williamson
On Thu, 2015-11-19 at 15:32 +, Stefano Stabellini wrote: > On Thu, 19 Nov 2015, Jike Song wrote: > > Hi Alex, thanks for the discussion. > > > > In addition to Kevin's replies, I have a high-level question: can VFIO > > be used by QEMU for both KVM and Xen? > > No. VFIO cannot be used with

Re: [Xen-devel] [Intel-gfx] [Announcement] 2015-Q3 release of XenGT - a Mediated Graphics Passthrough Solution from Intel

2015-11-18 Thread Alex Williamson
[cc +qemu-devel, +paolo, +gerd] On Tue, 2015-10-27 at 17:25 +0800, Jike Song wrote: > Hi all, > > We are pleased to announce another update of Intel GVT-g for Xen. > > Intel GVT-g is a full GPU virtualization solution with mediated > pass-through, starting from 4th generation Intel Core(TM)

Re: [Xen-devel] [PATCH v5 9/9] xen/pciback: Implement PCI reset slot or bus with 'do_flr' SysFS attribute

2014-12-04 Thread Alex Williamson
On Thu, 2014-12-04 at 17:25 +0100, Sander Eikelenboom wrote: Thursday, December 4, 2014, 4:39:06 PM, you wrote: On Thu, 2014-12-04 at 15:50 +0100, Sander Eikelenboom wrote: Thursday, December 4, 2014, 3:31:11 PM, you wrote: On 04/12/14 14:09, Sander Eikelenboom wrote: Thursday,