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Re: [Xen-users] [Xen-devel] Intel HD Graphics 4600 Xen VGA Passthrough to Windows 7 Ultimate HVM domU

On 24/07/2013 19:33, Singapore Citizen Mr. Teo En Ming (Zhang Enming) wrote:
On 24/07/2013 18:33, Ren, Yongjie wrote:
-----Original Message-----
From: Singapore Citizen Mr. Teo En Ming (Zhang Enming)
Sent: Wednesday, July 24, 2013 5:04 PM
To: Pasi Kärkkäinen
Cc: Ren, Yongjie; xen-users@xxxxxxxxxxxxx; Zhang, Xiantao;
xen-devel@xxxxxxxxxxxxx; Teo En Ming (Zhang Enming)
Subject: Re: [Xen-devel] Intel HD Graphics 4600 Xen VGA Passthrough to
Windows 7 Ultimate HVM domU

On 23/07/2013 20:03, Pasi Kärkkäinen wrote:
On Mon, Jul 22, 2013 at 02:57:08PM +0000, Ren, Yongjie wrote:
Any Intel engineers here who can advise?

I'm also doing some testing but seems we didn't meet a similar issue
with yours.
Which CPU are you using?
My Haswell desktop CPU (Core i5-4670) doesn't have the same IGD as
And, I'll have some update after I doing more testing.

Best Regards,
       Yongjie (Jay)

Hello Yongjie,

Can you please describe the following info about your GPU passthru
- Xen hypervisor version/changeset
- Any patches to Xen?
- Cmdline options to Xen
- dom0 linux kernel version
- Cmdline options to dom0 linux kernel
- HVM guest OS/version
- IGD driver version in the HVM guest
- dom0 configuration and settings; I assume you're using xen-pciback?
Did you blacklist igd driver in dom0 kernel? etc.
I think that'd be helpful for others to get a similar baseline configuration.


-- Pasi

Dear Yongjie,

Could you share with us your hardware and software configuration

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:

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

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

5. IGD driver version in HVM:
   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.)

7. dom0 kernel config is attached as file 'config-3.8.1'.

8. HVM guest config file:
builder= "hvm"
name= "vga-passthrough"
memory =1024
device_model_override= '/usr/lib/xen/bin/qemu-dm'
device_model_version= 'qemu-xen-traditional'
disk = [ '/images/ia32e_win7.qcow,qcow2,xvda,rw' ]
usb = 1
usbdevice = 'tablet'
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.

Best Regards,
      Yongjie (Jay)


I was trying to compile Xen 4.3-unstable changeset 26666 when I encountered the following error.

/usr/bin/ld: vl.o: undefined reference to symbol 'timer_settime@@GLIBC_2.3.3'
/usr/bin/ld: note: 'timer_settime@@GLIBC_2.3.3' is defined in DSO /lib/x86_64-linux-gnu/librt.so.1 so try adding it to the linker command line
/lib/x86_64-linux-gnu/librt.so.1: could not read symbols: Invalid operation
collect2: error: ld returned 1 exit status
make[5]: *** [qemu-dm] Error 1
make[5]: Leaving directory `/home/teo-en-ming/xen-unstable.hg-cs26666/tools/qemu-xen-traditional-dir-remote/i386-dm'
make[4]: *** [subdir-i386-dm] Error 2
make[4]: Leaving directory `/home/teo-en-ming/xen-unstable.hg-cs26666/tools/qemu-xen-traditional-dir-remote'
make[3]: *** [subdir-install-qemu-xen-traditional-dir] Error 2
make[3]: Leaving directory `/home/teo-en-ming/xen-unstable.hg-cs26666/tools'
make[2]: *** [subdirs-install] Error 2
make[2]: Leaving directory `/home/teo-en-ming/xen-unstable.hg-cs26666/tools'
make[1]: *** [install-tools] Error 2
make[1]: Leaving directory `/home/teo-en-ming/xen-unstable.hg-cs26666'
make: *** [world] Error 2

Related information: http://www.gossamer-threads.com/lists/xen/devel/283347

How can I fix this issue?

Thank you very much.


With reference to this thread http://www.gossamer-threads.com/lists/xen/devel/283347, I tried to workaround the above-mentioned problem. The following are steps I have taken to compile and install Xen 4.3-unstable changeset 26666.

hg clone -r 26666 http://xenbits.xensource.com/xen-unstable.hg xen-unstable.hg-cs26666
cd xen-unstable.hg-cs26666
make world
git clone git://xenbits.xen.org/qemu-xen-unstable.git
cd qemu-xen-unstable
cp -a * /home/teo-en-ming/xen-unstable.hg-cs26666/tools/qemu-xen-traditional-dir-remote
cd ..
cd xen-unstable.hg-cs26666
sudo -s
make world
make install

Xen 4.3-unstable changeset 26666 compiles and installs successfully. However...

teo-en-ming@intel-core-i5-4430-desktop:~$ sudo xl create /etc/xen/windows7
Parsing config from /etc/xen/windows7
failed to free memory for the domain

teo-en-ming@intel-core-i5-4430-desktop:~$ sudo xl list
libxl: error: libxl.c:557:libxl_list_domain: geting domain info list: Permission denied
libxl_domain_infolist failed.

teo-en-ming@intel-core-i5-4430-desktop:~$ sudo xl dmesg
libxl: error: libxl.c:4759:libxl_xen_console_read_line: reading console ring buffer: Permission denied

teo-en-ming@intel-core-i5-4430-desktop:~$ sudo xl info
host                   : intel-core-i5-4430-desktop
release                : 3.11.0-rc1-xen-teo.en.ming-sgp
version                : #1 SMP Mon Jul 15 22:07:31 SGT 2013
machine                : x86_64
libxl: error: libxl.c:3938:libxl_get_physinfo: getting physinfo: Permission denied
libxl_physinfo failed.
libxl: error: libxl.c:4320:libxl_get_scheduler: getting domain info list: Permission denied
xen_major              : 4
xen_minor              : 3
xen_extra              : -unstable
xen_version            : 4.3-unstable
xen_caps               : xen-3.0-x86_64 xen-3.0-x86_32p hvm-3.0-x86_32 hvm-3.0-x86_32p hvm-3.0-x86_64
xen_scheduler          : (null)
xen_pagesize           : 4096
platform_params        : virt_start=0xffff800000000000
xen_changeset          : Thu Feb 28 09:22:41 2013 +0100 26666:94ece33caae2
xen_commandline        :
cc_compiler            : gcc (Ubuntu/Linaro 4.7.3-1ubuntu1) 4.7.3
cc_compile_by          : root
cc_compile_domain      :
cc_compile_date        : Thu Jul 25 13:47:58 SGT 2013
xend_config_format     : 4

It appears that my Xen 4.3-unstable changeset 26666 installation is broken. How do I fix this issue? Are there any mistakes in the steps I have taken?

Thank you very much.

Yours sincerely,

Singapore Citizen Mr. Teo En Ming (Zhang Enming)
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