Re: Intel HD Graphics 4600 Xen VGA Passthrough to Windows 7 Ultimate HVM domU

From: "Pasi Kärkkäinen" <pasik@iki.fi>
To: "Ren, Yongjie" <yongjie.ren@intel.com>
Cc: "xen-users@lists.xen.org" <xen-users@lists.xen.org>,
	"singapore.mr.teo.en.ming@gmail.com"
	<singapore.mr.teo.en.ming@gmail.com>,
	"Zhang, Xiantao" <xiantao.zhang@intel.com>,
	"xen-devel@lists.xen.org" <xen-devel@lists.xen.org>
Subject: Re: Intel HD Graphics 4600 Xen VGA Passthrough to Windows 7 Ultimate HVM domU
Date: Wed, 24 Jul 2013 14:57:02 +0300	[thread overview]
Message-ID: <20130724115702.GX2924@reaktio.net> (raw)
In-Reply-To: <1B4B44D9196EFF41AE41FDA404FC0A1001B5327D@SHSMSX102.ccr.corp.intel.com>

On Wed, Jul 24, 2013 at 10:33:38AM +0000, Ren, Yongjie wrote:
> > 
> > Dear Yongjie,
> > 
> > Could you share with us your hardware and software configuration
> > settings?
> > 
> Sure. My IGD is also Intel HD Graphics 4600. :-)
>
> 1. hypervisor version: c/s 26666 in xen-unstable.hg tree  (5 months ago)
>   traditional qemu commit: 5ae58eaa967495fce99b727422054c58750d252b
>   Dom0 kernel: Linux 3.8.1
> N.B. I didn't use the latest traditional qemu because of the following bug:
> http://bugzilla-archived.xenproject.org//bugzilla/show_bug.cgi?id=1865
> 

Hmm.. isn't that bug affecting qemu-traditional in general, not PCI/GPU passthru specifically? 
Or is it *only* PCI/GPU passthru that it breaks for you? 

> 2. no offline patch. (just use the code in the tree I mentioned above.)
>

Ok, so this is a pre-4.3 version. 

> 3. hypervisor options: dom0_mem=1024M iommu=1 loglvl=all guest_loglvl=all unrestricted_guest=1 msi=1
>   dom0 kernel options: ro root=/dev/sda1
> 
> 4. HVM guest: Windows 7 Enterprise
> 

32bit or 64bit Win7? SP1 I assume? 

> 5. IGD driver version in HVM: 9.18.10.3165
>   got to: https://downloadcenter.intel.com/
>   then, search "4th Generation Intel Core Processors with intel hd graphics 4600" to download the driver.
> 
> 6. use 'xl pci-assignable-add $BDF' to add the IGD as assignable.
>   (it also use 'xen.pciback' driver.)
> 

Is IGD the primary graphics adapter on the machine, so does BIOS initialize the IGD when you power-on the machine? 
Or do you have some other graphics adapter that you use in dom0 ? 

> 7. dom0 kernel config is attached as file 'config-3.8.1'.
> 
> 8. HVM guest config file:
> builder= "hvm"
> name= "vga-passthrough"
> memory =1024
> vcpus=4
> device_model_override= '/usr/lib/xen/bin/qemu-dm'
> device_model_version= 'qemu-xen-traditional'
> disk = [ '/images/ia32e_win7.qcow,qcow2,xvda,rw' ]
> vnc=1
> serial='pty'
> usb = 1
> usbdevice = 'tablet'
> gfx_passthru=1
> pci = ['00:02.0','00:1d.0','07:00.0']  #'00:02.0' is IGD; the other two are mouse and keyboard.
> 
> 9. I can successfully assign this IGD 4600 (in Core i5-4670 CPU) to the Windows guest. And the IGD can work fine.
>   See some attached pictures for more info.
> 

Thanks a lot!

-- Pasi