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RE: [Xen-devel] [PATCH 2/2 v2] graphics passthrough with VT-d



make sure your xen version is older than 20144, such as 20143. Otherwise it conflicts when you apply my posted patches.
 
Pls post your steps to build your environment with my patches. I suspect you may make some mistakes on xen build.
 
Regards,
Weidong


From: Teo En Ming (Zhang Enming) [mailto:enming.teo@xxxxxxxxxxxxxxx]
Sent: 2009年9月2日 11:29
To: Han, Weidong
Cc: xen-devel@xxxxxxxxxxxxxxxxxxx; Lin, Ben Y; Kay, Allen M; 'Jean Guyader'; Keir.Fraser@xxxxxxxxxxxxx; bengheng@xxxxxxxxxxxxxx
Subject: RE: [Xen-devel] [PATCH 2/2 v2] graphics passthrough with VT-d

Hi Weidong,

 

Even though I tried to apply xen-gfx-passthrough.patch to xen 3.5-unstable changeset 20145, it asked “Apply anyway?” and I chose no. For assume ?R, I also chose no. Some files have been patched, while most files are not patched with xen-gfx-passthrough.patch.

 

Regards,
 

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
Mobile: +65-9648-9798
MSN: teoenming@xxxxxxxxxxx


From: xen-devel-bounces@xxxxxxxxxxxxxxxxxxx [mailto:xen-devel-bounces@xxxxxxxxxxxxxxxxxxx] On Behalf Of Han, Weidong
Sent: Wednesday, September 02, 2009 6:49 AM
To: 'enming.teo@xxxxxxxxxxxxxxx'
Cc: 'xen-devel@xxxxxxxxxxxxxxxxxxx'; Lin,Ben Y; Kay, Allen M; 'Jean Guyader'; 'Keir.Fraser@xxxxxxxxxxxxx'; 'bengheng@xxxxxxxxxxxxxx'
Subject: RE: [Xen-devel] [PATCH 2/2 v2] graphics passthrough with VT-d

 

xen-gfx-passthrough.patch was checked into xne-unstable as changeset 20144,so you cannot apply it on 20145.

 

For your secondary gfx passthrough case, pls use the version 1 patches. Christian Tramnitz said he succeeded to passthrough secondary gfx with my patches.

 

Regards,

Weidong

 


From: Mr. Teo En Ming (Zhang Enming) [mailto:enming.teo@xxxxxxxxxxxxxxx]
Sent: 2009
92 3:24
To: Han, Weidong
Cc: xen-devel@xxxxxxxxxxxxxxxxxxx; Lin, Ben Y; Kay, Allen M; Keir.Fraser@xxxxxxxxxxxxx; 'Jean Guyader'; bengheng@xxxxxxxxxxxxxx
Subject: Re: [Xen-devel] [PATCH 2/2 v2] graphics passthrough with VT-d

Dear Weidong,

I checked out xen 3.5-unstable changeset 20145.

I applied xen-gfx-passthrough.patch to changeset 20145.

There were some errors with

Reversed (or previously applied) patch detected! Assume -R

So I think the maintainers of xen-unstable had applied some of the patches from xen-gfx-passthrough.patch you posted to the tree.

Then I applied the rest of the patches:

qemu-gfx-passthrough.patch
xen-load-vbios-file.patch
xen-vBAR-pBAR.patch
qemu-change-for-vBAR-pBAR.patch
qemu-claim-vga-cycle-for-secondary-gfx-passthrough.patch


to changeset 20145 without problems.

Here are the test results. Note that all of the test results are based on starting Windows XP Home HVM domU while in X server on dom0.

If I try to start domU in text mode on dom0 (without X server), then the screen output will be garbaged and I won't be able to type anything at all in dom0 text mode.

Test results with pvops dom 0 kernel 2.6.30-rc3
=============================

A. 1 VCPU
======

Tried starting win xp home domu with vcpu=1. DomU crashed and exited, leaving only dom0.

(XEN) HVM1: HVM Loader
(XEN) HVM1: Detected Xen v3.5-unstable
(XEN) HVM1: CPU speed is 2800 MHz
(XEN) irq.c:243: Dom1 PCI link 0 changed 0 -> 5
(XEN) HVM1: PCI-ISA link 0 routed to IRQ5
(XEN) irq.c:243: Dom1 PCI link 1 changed 0 -> 10
(XEN) HVM1: PCI-ISA link 1 routed to IRQ10
(XEN) irq.c:243: Dom1 PCI link 2 changed 0 -> 11
(XEN) HVM1: PCI-ISA link 2 routed to IRQ11
(XEN) irq.c:243: Dom1 PCI link 3 changed 0 -> 5
(XEN) HVM1: PCI-ISA link 3 routed to IRQ5
(XEN) HVM1: pci dev 01:2 INTD->IRQ5
(XEN) HVM1: pci dev 01:3 INTA->IRQ10
(XEN) HVM1: pci dev 02:0 INTA->IRQ11
(XEN) HVM1: pci dev 03:0 INTA->IRQ5
(XEN) HVM1: Make vBAR = pBAR of assigned gfx
(XEN) domctl.c:836:d0 memory_map:add: gfn=d2000 mfn=d2000 nr_mfns=1000
(XEN) domctl.c:836:d0 memory_map:add: gfn=c0000 mfn=c0000 nr_mfns=10000
(XEN) domctl.c:836:d0 memory_map:add: gfn=d0000 mfn=d0000 nr_mfns=2000
(XEN) domctl.c:887:d0 ioport_map:add f_gport=d000 f_mport=d000 np=80
(XEN) HVM1: pci dev 02:0 bar 14 size 01000000: e0000008
(XEN) HVM1: pci dev 02:0 bar 10 size 00000100: 0000c001
(XEN) HVM1: pci dev 03:0 bar 10 size 00000100: 0000c101
(XEN) HVM1: pci dev 03:0 bar 14 size 00000100: e1000000
(XEN) HVM1: pci dev 01:2 bar 20 size 00000020: 0000c201
(XEN) HVM1: pci dev 01:1 bar 20 size 00000010: 0000c221
(XEN) HVM1: Multiprocessor initialisation:
(XEN) HVM1:  - CPU0 ... 36-bit phys ... fixed MTRRs ... var MTRRs [3/8] ... done.
(XEN) HVM1: Testing HVM environment:
(XEN) HVM1:  - REP INSB across page boundaries ... passed
(XEN) HVM1:  - GS base MSRs and SWAPGS ... passed
(XEN) HVM1: Passed 2 of 2 tests
(XEN) HVM1: Writing SMBIOS tables ...
(XEN) HVM1: Loading ROMBIOS ...
(XEN) HVM1: 11900 bytes of ROMBIOS high-memory extensions:
(XEN) HVM1:   Relocating to 0xfc000000-0xfc002e7c ... done
(XEN) HVM1: Creating MP tables ...
(XEN) HVM1: Loading VGABIOS of passthroughed gfx ...
(XEN) HVM1: Loading PCI Option ROM ...
(XEN) HVM1:  - Manufacturer: http://etherboot.org
(XEN) HVM1:  - Product name: gPXE
(XEN) HVM1: Loading ACPI ...
(XEN) HVM1:  - Lo data: 000ea020-000ea04f
(XEN) HVM1:  - Hi data: fc003000-fc01261f
(XEN) HVM1: vm86 TSS at fc012800
(XEN) HVM1: BIOS map:
(XEN) HVM1:  c0000-cf7ff: VGA BIOS
(XEN) HVM1:  cf800-dbfff: Etherboot ROM
(XEN) HVM1:  eb000-eb14e: SMBIOS tables
(XEN) HVM1:  f0000-fffff: Main BIOS
(XEN) HVM1: Invoking ROMBIOS ...
(XEN) HVM1: $Revision: 1.221 $ $Date: 2008/12/07 17:32:29 $
(XEN) HVM1: *** int 15h function AX=5f14, BX=078f not yet supported!
(XEN) realmode.c:115:d1 Failed to emulate insn.
(XEN) realmode.c:165:d1 Real-mode emulation failed @ b4b4:0000b4b4: 00 00 00 00 00 00
(XEN) domain_crash called from realmode.c:166
(XEN) Domain 1 (vcpu#0) crashed on cpu#1:
(XEN) ----[ Xen-3.5-unstable  x86_64  debug=y  Not tainted ]----
(XEN) CPU:    1
(XEN) RIP:    c000:[<000000000000b4b4>]
(XEN) RFLAGS: 0000000000000082   CONTEXT: hvm guest
(XEN) rax: 000000000000b422   rbx: 000000000000b4b4   rcx: 0000000000010593
(XEN) rdx: 00000000000003d4   rsi: 0000000000009e48   rdi: 000000000000966a
(XEN) rbp: 000000000000a1a4   rsp: 0000000000009662   r8:  0000000000000000
(XEN) r9:  0000000000000000   r10: 0000000000000000   r11: 0000000000000000
(XEN) r12: 0000000000000000   r13: 0000000000000000   r14: 0000000000000000
(XEN) r15: 0000000000000000   cr0: 0000000000000010   cr4: 0000000000000000
(XEN) cr3: 0000000000800000   cr2: 0000000000000000
(XEN) ds: 0000   es: 0000   fs: 0000   gs: 0000   ss: 0000   cs: c000
(XEN) [VT-D]iommu.c:1292:d0 domain_context_unmap:PCIe: bdf = 1:0.0
(XEN) [VT-D]iommu.c:1178:d0 domain_context_mapping:PCIe: bdf = 1:0.0

B. 2 VCPU
======

I switched to vcpu=2 for win xp home hvm domU. Now domU does not crash. xm list shows domU running. But vncviewer pops up a QEMU monitor. Looks like win xp home hvm domU did not start. All I get is a QEMU monitor.

(XEN) HVM2: HVM Loader
(XEN) HVM2: Detected Xen v3.5-unstable
(XEN) HVM2: CPU speed is 2800 MHz
(XEN) irq.c:243: Dom2 PCI link 0 changed 0 -> 5
(XEN) HVM2: PCI-ISA link 0 routed to IRQ5
(XEN) irq.c:243: Dom2 PCI link 1 changed 0 -> 10
(XEN) HVM2: PCI-ISA link 1 routed to IRQ10
(XEN) irq.c:243: Dom2 PCI link 2 changed 0 -> 11
(XEN) HVM2: PCI-ISA link 2 routed to IRQ11
(XEN) irq.c:243: Dom2 PCI link 3 changed 0 -> 5
(XEN) HVM2: PCI-ISA link 3 routed to IRQ5
(XEN) HVM2: pci dev 01:2 INTD->IRQ5
(XEN) HVM2: pci dev 01:3 INTA->IRQ10
(XEN) HVM2: pci dev 02:0 INTA->IRQ11
(XEN) HVM2: pci dev 03:0 INTA->IRQ5
(XEN) HVM2: Make vBAR = pBAR of assigned gfx
(XEN) domctl.c:836:d0 memory_map:add: gfn=d2000 mfn=d2000 nr_mfns=1000
(XEN) domctl.c:836:d0 memory_map:add: gfn=c0000 mfn=c0000 nr_mfns=10000
(XEN) domctl.c:836:d0 memory_map:add: gfn=d0000 mfn=d0000 nr_mfns=2000
(XEN) domctl.c:887:d0 ioport_map:add f_gport=d000 f_mport=d000 np=80
(XEN) HVM2: pci dev 02:0 bar 14 size 01000000: e0000008
(XEN) HVM2: pci dev 02:0 bar 10 size 00000100: 0000c001
(XEN) HVM2: pci dev 03:0 bar 10 size 00000100: 0000c101
(XEN) HVM2: pci dev 03:0 bar 14 size 00000100: e1000000
(XEN) HVM2: pci dev 01:2 bar 20 size 00000020: 0000c201
(XEN) HVM2: pci dev 01:1 bar 20 size 00000010: 0000c221
(XEN) HVM2: Multiprocessor initialisation:
(XEN) HVM2:  - CPU0 ... 36-bit phys ... fixed MTRRs ... var MTRRs [3/8] ... done.
(XEN) HVM2:  - CPU1 ... 36-bit phys ... fixed MTRRs ... var MTRRs [3/8] ... done.
(XEN) HVM2: Testing HVM environment:
(XEN) HVM2:  - REP INSB across page boundaries ... passed
(XEN) HVM2:  - GS base MSRs and SWAPGS ... passed
(XEN) HVM2: Passed 2 of 2 tests
(XEN) HVM2: Writing SMBIOS tables ...
(XEN) HVM2: Loading ROMBIOS ...
(XEN) HVM2: 11900 bytes of ROMBIOS high-memory extensions:
(XEN) HVM2:   Relocating to 0xfc000000-0xfc002e7c ... done
(XEN) HVM2: Creating MP tables ...
(XEN) HVM2: Loading VGABIOS of passthroughed gfx ...
(XEN) HVM2: Loading PCI Option ROM ...
(XEN) HVM2:  - Manufacturer: http://etherboot.org
(XEN) HVM2:  - Product name: gPXE
(XEN) HVM2: Loading ACPI ...
(XEN) HVM2:  - Lo data: 000ea020-000ea04f
(XEN) HVM2:  - Hi data: fc003000-fc01261f
(XEN) HVM2: vm86 TSS at fc012800
(XEN) HVM2: BIOS map:
(XEN) HVM2:  c0000-cf7ff: VGA BIOS
(XEN) HVM2:  cf800-dbfff: Etherboot ROM
(XEN) HVM2:  eb000-eb175: SMBIOS tables
(XEN) HVM2:  f0000-fffff: Main BIOS
(XEN) HVM2: Invoking ROMBIOS ...
(XEN) HVM2: $Revision: 1.221 $ $Date: 2008/12/07 17:32:29 $

The same thing happens when testing under pvops dom 0 kernel 2.6.31-rc6.

Test results with pvops dom 0 kernel 2.6.31-rc6
=============================

A. 1 VCPU
======

(XEN) HVM1: HVM Loader
(XEN) HVM1: Detected Xen v3.5-unstable
(XEN) HVM1: CPU speed is 2800 MHz
(XEN) irq.c:243: Dom1 PCI link 0 changed 0 -> 5
(XEN) HVM1: PCI-ISA link 0 routed to IRQ5
(XEN) irq.c:243: Dom1 PCI link 1 changed 0 -> 10
(XEN) HVM1: PCI-ISA link 1 routed to IRQ10
(XEN) irq.c:243: Dom1 PCI link 2 changed 0 -> 11
(XEN) HVM1: PCI-ISA link 2 routed to IRQ11
(XEN) irq.c:243: Dom1 PCI link 3 changed 0 -> 5
(XEN) HVM1: PCI-ISA link 3 routed to IRQ5
(XEN) HVM1: pci dev 01:2 INTD->IRQ5
(XEN) HVM1: pci dev 01:3 INTA->IRQ10
(XEN) HVM1: pci dev 02:0 INTA->IRQ11
(XEN) HVM1: pci dev 03:0 INTA->IRQ5
(XEN) HVM1: Make vBAR = pBAR of assigned gfx
(XEN) domctl.c:836:d0 memory_map:add: gfn=d2000 mfn=d2000 nr_mfns=1000
(XEN) domctl.c:836:d0 memory_map:add: gfn=c0000 mfn=c0000 nr_mfns=10000
(XEN) domctl.c:836:d0 memory_map:add: gfn=d0000 mfn=d0000 nr_mfns=2000
(XEN) domctl.c:887:d0 ioport_map:add f_gport=d000 f_mport=d000 np=80
(XEN) HVM1: pci dev 02:0 bar 14 size 01000000: e0000008
(XEN) HVM1: pci dev 02:0 bar 10 size 00000100: 0000c001
(XEN) HVM1: pci dev 03:0 bar 10 size 00000100: 0000c101
(XEN) HVM1: pci dev 03:0 bar 14 size 00000100: e1000000
(XEN) HVM1: pci dev 01:2 bar 20 size 00000020: 0000c201
(XEN) HVM1: pci dev 01:1 bar 20 size 00000010: 0000c221
(XEN) HVM1: Multiprocessor initialisation:
(XEN) HVM1:  - CPU0 ... 36-bit phys ... fixed MTRRs ... var MTRRs [3/8] ... done.
(XEN) HVM1: Testing HVM environment:
(XEN) HVM1:  - REP INSB across page boundaries ... passed
(XEN) HVM1:  - GS base MSRs and SWAPGS ... passed
(XEN) HVM1: Passed 2 of 2 tests
(XEN) HVM1: Writing SMBIOS tables ...
(XEN) HVM1: Loading ROMBIOS ...
(XEN) HVM1: 11900 bytes of ROMBIOS high-memory extensions:
(XEN) HVM1:   Relocating to 0xfc000000-0xfc002e7c ... done
(XEN) HVM1: Creating MP tables ...
(XEN) HVM1: Loading VGABIOS of passthroughed gfx ...
(XEN) HVM1: Loading PCI Option ROM ...
(XEN) HVM1:  - Manufacturer: http://etherboot.org
(XEN) HVM1:  - Product name: gPXE
(XEN) HVM1: Loading ACPI ...
(XEN) HVM1:  - Lo data: 000ea020-000ea04f
(XEN) HVM1:  - Hi data: fc003000-fc01261f
(XEN) HVM1: vm86 TSS at fc012800
(XEN) HVM1: BIOS map:
(XEN) HVM1:  c0000-cf7ff: VGA BIOS
(XEN) HVM1:  cf800-dbfff: Etherboot ROM
(XEN) HVM1:  eb000-eb14e: SMBIOS tables
(XEN) HVM1:  f0000-fffff: Main BIOS
(XEN) HVM1: Invoking ROMBIOS ...
(XEN) HVM1: $Revision: 1.221 $ $Date: 2008/12/07 17:32:29 $
(XEN) HVM1: *** int 15h function AX=5f14, BX=078f not yet supported!
(XEN) realmode.c:115:d1 Failed to emulate insn.
(XEN) realmode.c:165:d1 Real-mode emulation failed @ b4b4:0000b4b4: 00 00 00 00 00 00
(XEN) domain_crash called from realmode.c:166
(XEN) Domain 1 (vcpu#0) crashed on cpu#1:
(XEN) ----[ Xen-3.5-unstable  x86_64  debug=y  Not tainted ]----
(XEN) CPU:    1
(XEN) RIP:    c000:[<000000000000b4b4>]
(XEN) RFLAGS: 0000000000000086   CONTEXT: hvm guest
(XEN) rax: 000000000000b422   rbx: 000000000000b4b4   rcx: 0000000000021f0f
(XEN) rdx: 00000000000003d4   rsi: 0000000000009e48   rdi: 000000000000966a
(XEN) rbp: 000000000000d49c   rsp: 0000000000009662   r8:  0000000000000000
(XEN) r9:  0000000000000000   r10: 0000000000000000   r11: 0000000000000000
(XEN) r12: 0000000000000000   r13: 0000000000000000   r14: 0000000000000000
(XEN) r15: 0000000000000000   cr0: 0000000000000010   cr4: 0000000000000000
(XEN) cr3: 0000000000800000   cr2: 0000000000000000
(XEN) ds: 0000   es: 0000   fs: 0000   gs: 0000   ss: 0000   cs: c000
(XEN) [VT-D]iommu.c:1292:d0 domain_context_unmap:PCIe: bdf = 1:0.0
(XEN) [VT-D]iommu.c:1178:d0 domain_context_mapping:PCIe: bdf = 1:0.0

B. 2 VCPU
======

(XEN) HVM2: HVM Loader
(XEN) HVM2: Detected Xen v3.5-unstable
(XEN) HVM2: CPU speed is 2800 MHz
(XEN) irq.c:243: Dom2 PCI link 0 changed 0 -> 5
(XEN) HVM2: PCI-ISA link 0 routed to IRQ5
(XEN) irq.c:243: Dom2 PCI link 1 changed 0 -> 10
(XEN) HVM2: PCI-ISA link 1 routed to IRQ10
(XEN) irq.c:243: Dom2 PCI link 2 changed 0 -> 11
(XEN) HVM2: PCI-ISA link 2 routed to IRQ11
(XEN) irq.c:243: Dom2 PCI link 3 changed 0 -> 5
(XEN) HVM2: PCI-ISA link 3 routed to IRQ5
(XEN) HVM2: pci dev 01:2 INTD->IRQ5
(XEN) HVM2: pci dev 01:3 INTA->IRQ10
(XEN) HVM2: pci dev 02:0 INTA->IRQ11
(XEN) HVM2: pci dev 03:0 INTA->IRQ5
(XEN) HVM2: Make vBAR = pBAR of assigned gfx
(XEN) domctl.c:836:d0 memory_map:add: gfn=d2000 mfn=d2000 nr_mfns=1000
(XEN) domctl.c:836:d0 memory_map:add: gfn=c0000 mfn=c0000 nr_mfns=10000
(XEN) domctl.c:836:d0 memory_map:add: gfn=d0000 mfn=d0000 nr_mfns=2000
(XEN) domctl.c:887:d0 ioport_map:add f_gport=d000 f_mport=d000 np=80
(XEN) HVM2: pci dev 02:0 bar 14 size 01000000: e0000008
(XEN) HVM2: pci dev 02:0 bar 10 size 00000100: 0000c001
(XEN) HVM2: pci dev 03:0 bar 10 size 00000100: 0000c101
(XEN) HVM2: pci dev 03:0 bar 14 size 00000100: e1000000
(XEN) HVM2: pci dev 01:2 bar 20 size 00000020: 0000c201
(XEN) HVM2: pci dev 01:1 bar 20 size 00000010: 0000c221
(XEN) HVM2: Multiprocessor initialisation:
(XEN) HVM2:  - CPU0 ... 36-bit phys ... fixed MTRRs ... var MTRRs [3/8] ... done.
(XEN) HVM2:  - CPU1 ... 36-bit phys ... fixed MTRRs ... var MTRRs [3/8] ... done.
(XEN) HVM2: Testing HVM environment:
(XEN) HVM2:  - REP INSB across page boundaries ... passed
(XEN) HVM2:  - GS base MSRs and SWAPGS ... passed
(XEN) HVM2: Passed 2 of 2 tests
(XEN) HVM2: Writing SMBIOS tables ...
(XEN) HVM2: Loading ROMBIOS ...
(XEN) HVM2: 11900 bytes of ROMBIOS high-memory extensions:
(XEN) HVM2:   Relocating to 0xfc000000-0xfc002e7c ... done
(XEN) HVM2: Creating MP tables ...
(XEN) HVM2: Loading VGABIOS of passthroughed gfx ...
(XEN) HVM2: Loading PCI Option ROM ...
(XEN) HVM2:  - Manufacturer: http://etherboot.org
(XEN) HVM2:  - Product name: gPXE
(XEN) HVM2: Loading ACPI ...
(XEN) HVM2:  - Lo data: 000ea020-000ea04f
(XEN) HVM2:  - Hi data: fc003000-fc01261f
(XEN) HVM2: vm86 TSS at fc012800
(XEN) HVM2: BIOS map:
(XEN) HVM2:  c0000-cf7ff: VGA BIOS
(XEN) HVM2:  cf800-dbfff: Etherboot ROM
(XEN) HVM2:  eb000-eb175: SMBIOS tables
(XEN) HVM2:  f0000-fffff: Main BIOS
(XEN) HVM2: Invoking ROMBIOS ...
(XEN) HVM2: $Revision: 1.221 $ $Date: 2008/12/07 17:32:29 $
(XEN) mce.c:694:d0 MCE: rdmsr MCG_CAP 0x806
(XEN) mce.c:694:d0 MCE: rdmsr MCG_CAP 0x806

Hope the test results helped.

I can start win xp home hvm dom U successfully if i remove pci in domU config and set gfx-passthru=0, basically starting with emulated vga bios instead of passing through pci-e graphics.

-- 
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
Teo En Ming (Zhang Enming) wrote:
  
Hi,
 
How about the patch for loading vga bios from .bin file and the 1:1
bar mapping in version 2 release?
    
Let's make the basic patches better and acceptable first. I haven't rebased
the hacks patches on version 2 patches. Currently pls use the hack patches
with version 1 patches. 
 
Regards,
Weidong
 
  
Thanks for the version 2.
 
Regards,
 
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
Mobile: +65-9648-9798
MSN: teoenming@xxxxxxxxxxx
-----Original Message-----
From: xen-devel-bounces@xxxxxxxxxxxxxxxxxxx
[mailto:xen-devel-bounces@xxxxxxxxxxxxxxxxxxx] On Behalf Of Han,
Weidong Sent: Tuesday, September 01, 2009 2:01 PM
To: 'xen-devel@xxxxxxxxxxxxxxxxxxx'
Cc: Lin, Ben Y; 'bengheng@xxxxxxxxxxxxxx'; Kay,Allen M;
'Keir.Fraser@xxxxxxxxxxxxx'; 'Jean Guyader'
Subject: [Xen-devel] [PATCH 2/2 v2] graphics passthrough with VT-d
 
This patch supports basic gfx passthrough on QEMU:
  - disable emulated VGA adpater if there is passthroughed gfx
  - retrieve VGA bios from host 0xC0000, then load it to guest 0xC0000
  - register/unregister legacy VGA I/O ports and MMIOs for
passthroughed gfx 
 
Signed-off-by: Ben Lin <ben.y.lin@xxxxxxxxx>
Signed-off-by: Weidong Han <weidong.han@xxxxxxxxx>
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