Re: Re : Re : Re : Re : [Xen-devel] Re: Patches for VGA-Passthrough XEN 4.2 unstable

[David TECHER <davidtecher@xxxxxxxx>]

Hi

Finally I succeeded to use my graphic card EVGA GTX 460 SE 1024M with Xen
4.2 unstable.

Before I was using my MSI GT 440.

Kernel ---> 3.1.0-rc9 downloaded from
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=summary


My kernel's config is attached to this mail.

About Xen:

Download Xen

hg clone -r 23965 http://xenbits.xensource.com/staging/xen-unstable.hg/
xen-unstable.hg-rev-23965-ok

Make a first init build for tools

cd xen-unstable.hg-rev-23965-ok/tools
make -j4
make clean
cd ..

Apply the patches attached to this mail (patch -p0 < ....)

Copy the VGA BIOS extracted using nvlfash 5.100

cp /path/to/VGABIOS.ROM tools/firmware/vgabios/vgabios-pt.bin

Compil again

make -j4 tools

Install

make -j4 install-tools PYTHON_PREFIX_ARG= 

Since my old domU XP 64 bits was using GT 440, I replaced my old graphic
card with the EVGA GTX 460 SE.

Everything was OK (except that it is impossible to restart the domU withtout
restarting the dom0 as usual)

About dsdt.asl.patch file
=========================

For your information concerning the patch for dsd (I've already give the
informations in an other mail but I will give it again)

Get the identifier for your graphic card
root@mercury:/opt/tmp/gfx_patchs_gtx-460-se-evga# lspci |grep VGA
01:00.0 VGA compatible controller: nVidia Corporation Device 0e23 (rev a1)

Use dmesg to get the required ranges
root@mercury:/opt/tmp/gfx_patchs_gtx-460-se-evga# dmesg | grep 01:00.0 |
grep BAR
[    2.481779] pci 0000:01:00.0: BAR 0: reserving [mem 0xf8000000-0xf9ffffff
flags 0x40200] (d=0, p=0)
[    2.481782] pci 0000:01:00.0: BAR 1: reserving [mem 0xd0000000-0xd7ffffff
flags 0x14220c] (d=0, p=0)
[    2.481784] pci 0000:01:00.0: BAR 3: reserving [mem 0xd8000000-0xdbffffff
flags 0x14220c] (d=0, p=0)
[    2.481787] pci 0000:01:00.0: BAR 5: reserving [io  0xe000-0xe07f flags
0x40101] (d=0, p=0)


The 3 ranges [0xf8000000-0xf9fffff], [0xd0000000-0xd7ffffff],
[0xd8000000-0xdbfffff] need to be specify in dsdt.asl.patch

Moreover you need to use the formula

Maximum - Minimum + 1 for the difference.

As a example: for the first range [0xf8000000-0xf9fffff]

Maximum = (0xf9fffff) / Minimum = 0xf8000000 => Difference = 4194303999 -
4160749568 + 1 = 33554432 => hexadecimal = 0x02000000

That the reason why that in the patch, there are

+                        0xF8000000,
+                        0xF9FFFFFF,
                         0x00000000,
-                        0x05000000,
-                        ,, _Y01)
+                        0x02000000)

Do the same for the others ranges

Hope this help.

I do not make test for Windows 7.  I do not plan to try.

David








http://xen.1045712.n5.nabble.com/file/n4904945/config-3.1.0-rc9
config-3.1.0-rc9 
http://xen.1045712.n5.nabble.com/file/n4904945/dsdt.asl.patch dsdt.asl.patch 
http://xen.1045712.n5.nabble.com/file/n4904945/hvmloader.c.patch
hvmloader.c.patch 
http://xen.1045712.n5.nabble.com/file/n4904945/Makefile.patch Makefile.patch 
http://xen.1045712.n5.nabble.com/file/n4904945/pass-through.c.patch
pass-through.c.patch 
http://xen.1045712.n5.nabble.com/file/n4904945/pci.c.patch pci.c.patch 

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