Hi All,
I went through the history and here are the steps I took to patch xen
3.5-unstable for VGA passthrough.
Based on Weidong's advice I checked out changeset earlier than 20144.
Initial trial without secondary gfx passthrough patch
=================================
637 hg clone http://xenbits.xensource.com/xen-unstable.hg
638 cd xen-unstable.hg
639 vi tools/firmware/hvmloader/hvmloader.c
640 hg checkout 20143
641 cp
~enming/intel-gfx-passthru-patches/intel-gfx-passthru-patch01.patch .
642 patch -p1 < intel-gfx-passthru-patch01.patch
643 make tools
644 history
645 cd tools/ioemu-remote/
646 cp
~enming/intel-gfx-passthru-patches/intel-gfx-passthru-patch02.patch .
647 patch -p1 < intel-gfx-passthru-patch02.patch
648 cd ..
649 cd ..
650 cp ~enming/intel-gfx-passthru-patches/xen-load-vbios-file.patch .
651 patch -p1 < xen-load-vbios-file.patch
652 cp ~enming/intel-gfx-passthru-patches/xen-vBAR-pBAR.patch .
653 patch -p1 < xen-vBAR-pBAR.patch
654 cd tools/ioemu-remote/
655 cp
~enming/intel-gfx-passthru-patches/qemu-change-for-vBAR-pBAR.patch .
656 patch -p1 < qemu-change-for-vBAR-pBAR.patch
657 cd ../../
658 make clean
659 cp ~enming/vgabios-pt.bin tools/firmware/vgabios/
660 ls tools/firmware/vgabios/vgabios-pt.bin
661 make xen
662 make install-xen
663 make tools
664 make install-tools
In the above case, intel-gfx-passthru-patch01.patch is actually
xen-gfx-passthrough.patch as posted by Weidong.
intel-gfx-passthru-patch02.patch is actually qemu-gfx-passthrough.patch
as posted by Weidong.
After building and installing everything, I rebooted. When I tried to
passthrough the nVidia Geforce 8400 GS, I got "not enough free
resources" in Windows XP domU. This is in fact much better than my
earlier trial when I got "device cannot start" in Windows XP domU device
manager with the wrong approach of using onboard gma4500 graphics as
primary and nvidia geforce 8400 gs as secondary. This time I am using
nvidia geforce 8400 gs as the primary and nothing else as the secondary.
After Timothy Moore's suggestion, I proceeded to the next trial.
Next trial WITH secondary gfx passthrough patch
==============================
679 cd /usr/src
680 mv xen-unstable.hg xen-unstable.hg-20143-no-secondary-patch
681 cp -R xen-unstable.hg-20143-no-secondary-patch xen-unstable.hg
682 cd xen-unstable.hg
683 history
684 cd tools/ioemu-remote/
685 cp
~enming/intel-gfx-passthru-patches/qemu-claim-vga-cycle-for-secondary-gfx-passthrough.patch
.
686 patch -p1 <
qemu-claim-vga-cycle-for-secondary-gfx-passthrough.patch
687 cd ../..
688 make clean
689 cp ~enming/vgabios-pt.bin tools/firmware/vgabios/
690 ls tools/firmware/vgabios/vgabios-pt.bin
691 make xen
692 make install-xen
693 make tools
694 make install-tools
At this point, I encountered an error with build.c as documented with my
earlier postings in xen-devel mailing list.
So I applied my very own patch:
Patch created by Teo En Ming (Zhang Enming) on 29 August 2009 Saturday
at 8:00 P.M. Singapore Time
Email #1: enming.teo@xxxxxxxxxxxxxxx
Email #2: space.time.universe@xxxxxxxxx
MSN: teoenming@xxxxxxxxxxx
Mobile Phone: +65-9648-9798
--- ssdt_pm.h 2009-08-29 19:54:52.653088000 +0800
+++ ssdt_pm.h 2009-08-29 19:56:51.813088550 +0800
@@ -10,7 +10,7 @@
* C source code output
*
*/
-unsigned char AmlCode[] =
+unsigned char AmlCode_PM[] =
{
0x53,0x53,0x44,0x54,0xD6,0x05,0x00,0x00, /* 00000000 "SSDT...." */
0x02,0xB9,0x58,0x65,0x6E,0x00,0x00,0x00, /* 00000008 "..Xen..." */
--- ssdt_tpm.h 2009-08-29 19:55:44.578738954 +0800
+++ ssdt_tpm.h 2009-08-29 19:57:27.896638884 +0800
@@ -10,7 +10,7 @@
* C source code output
*
*/
-unsigned char AmlCode[] =
+unsigned char AmlCode_TPM[] =
{
0x53,0x53,0x44,0x54,0x4C,0x00,0x00,0x00, /* 00000000 "SSDTL..." */
0x02,0x2A,0x58,0x65,0x6E,0x00,0x00,0x00, /* 00000008 ".*Xen..." */
Then I checked ssdt_pm.h and ssdt_tpm.h to make sure they are correct.
695 vi tools/firmware/hvmloader/acpi/ssdt_pm.h
696 vi tools/firmware/hvmloader/acpi/ssdt_tpm.h
697 make install-tools
But I still get "not enough free resources" in Win XP domU device
manager. So apparently
the patch qemu-claim-vga-cycle-for-secondary-gfx-passthrough.patch
doesn't affect my nvidia geforce 8400 gs passed through operations since
I am using nvidia as primary and nothing as secondary. The secondary gfx
patch is for cases when you have a primary for dom0 and passing through
the secondary gfx to a HVM domU.
--
Mr. Teo En Ming (Zhang Enming) Dip(Mechatronics Engineering)
BEng(Hons)(Mechanical Engineering)
Technical Support Engineer
Information Technology Department
Asiasoft Online Pte Ltd
Tampines Central 1 #04-01 Tampines Plaza
Singapore 529541
Republic of Singapore
Company Website: http://www.asiasoft.sg/
Mobile: +65-9648-9798
MSN: teoenming@xxxxxxxxxxx
Alma Maters: Singapore Polytechnic, National University of Singapore
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