Re: [Xen-devel] Video Presentation on PCI Express x16 VGA Pass Through to Xen-based Windows XP Home Edition HVM Virtual Machine

["Mr. Teo En Ming (Zhang Enming)" <space.time.universe@xxxxxxxxx>]

Hi All,

I have solved the final problem.

Thank you Christian Tramnitz for pointing me to the missing link.

I have tested my own modifications to xen-vBAR-pBAR.patch and it works!

I reproduce part of xen-vBAR-pBAR.patch here which I modified for my nVidia Geforce 8400 GS graphics card:

<CODE>

diff -r 96b634bf65c3 tools/firmware/hvmloader/acpi/dsdt.asl
--- a/tools/firmware/hvmloader/acpi/dsdt.asl    Mon Aug 31 13:14:47 2009 +0800
+++ b/tools/firmware/hvmloader/acpi/dsdt.asl    Mon Aug 31 16:03:27 2009 +0800
@@ -175,6 +175,34 @@ DefinitionBlock ("DSDT.aml", "DSDT", 2, 
                         0x000BFFFF,
                         0x00000000,
                         0x00020000)
+
+                    /* reserve MMIO BARs of gfx for 1:1 mapping */
+                    DWordMemory(
+                        ResourceProducer, PosDecode, MinFixed, MaxFixed,
+                        Cacheable, ReadWrite,
+                        0x00000000,
+                        0xC0000000,
+                        0xCFFFFFFF,
+                        0x00000000,
+                        0x10000000)
+
+                    DWordMemory(
+                        ResourceProducer, PosDecode, MinFixed, MaxFixed,
+                        NonCacheable, ReadWrite,
+                        0x00000000,
+                        0xD0000000,
+                        0xD1FFFFFF,
+                        0x00000000,
+                        0x02000000)
+
+                    DWordMemory(
+                        ResourceProducer, PosDecode, MinFixed, MaxFixed,
+                        NonCacheable, ReadWrite,
+                        0x00000000,
+                        0xD2000000,
+                        0xD2FFFFFF,
+                        0x00000000,
+                        0x01000000)
 
                     DWordMemory(
                         ResourceProducer, PosDecode, MinFixed, MaxFixed,

</CODE>

Once again, thanks to Xen developers, engineers at Intel and everybody who have helped me along the way.

-- 
Mr. Teo En Ming (Zhang Enming) Dip(Mechatronics) BEng(Hons)(Mechanical Engineering)
Alma Maters:
(1) Singapore Polytechnic
(2) National University of Singapore
Blog URL: http://teo-en-ming-aka-zhang-enming.blogspot.com
Email: space.time.universe@xxxxxxxxx
MSN: teoenming@xxxxxxxxxxx
Mobile Phone: +65-9648-9798
Street: Bedok Reservoir Road
Republic of Singapore
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