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xen-devel
[Xen-devel] RE: pciback+front needed for hvm ?
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To: |
Tim Moore <timothy.moore@xxxxxxxxxxx>, "Kay, Allen M" <allen.m.kay@xxxxxxxxx>, "xen-devel@xxxxxxxxxxxxxxxxxxx" <xen-devel@xxxxxxxxxxxxxxxxxxx> |
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Subject: |
[Xen-devel] RE: pciback+front needed for hvm ? |
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From: |
"Cui, Dexuan" <dexuan.cui@xxxxxxxxx> |
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Date: |
Tue, 14 Apr 2009 07:46:56 +0800 |
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Thread-topic: |
pciback+front needed for hvm ? |
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For HVM PCI passthrough, ioemu (a modified
qemu as Device Model of HVM guest) emulates the PCI bus and
does the proper operations. PCI passthrough for HVM guest by VT-d has been
supported for years. :-) Per my experience, almost all the
PCI/PCIe devices can work -- however, the passthrough of Graphics Card could be
complicated and the community is doing more work.
Thanks,
-- Dexuan
From: xen-devel-bounces@xxxxxxxxxxxxxxxxxxx
[mailto:xen-devel-bounces@xxxxxxxxxxxxxxxxxxx] On Behalf Of Tim
Moore
Sent: Tuesday, April 14, 2009 7:29 AM
To: Kay, Allen
M; xen-devel@xxxxxxxxxxxxxxxxxxx
Subject: [Xen-devel] RE:
pciback+front needed for hvm ?
Please could you point
me to the patch ?
Thanks
!
From: Kay, Allen M
[mailto:allen.m.kay@xxxxxxxxx]
Sent: 13 April 2009 22:00
To: Tim
Moore; xen-devel@xxxxxxxxxxxxxxxxxxx
Subject: RE: pciback+front needed for hvm
?
HVM guest uses PCI
bus provided by QEMU. The functionality in QEMU is complete for PCI
passthrough support most devices. Additional patch is needed for
graphics device passthrough.
From:
xen-devel-bounces@xxxxxxxxxxxxxxxxxxx
[mailto:xen-devel-bounces@xxxxxxxxxxxxxxxxxxx] On Behalf Of Tim
Moore
Sent:
Monday, April 13, 2009 6:21 AM
To: xen-devel@xxxxxxxxxxxxxxxxxxx
Subject: [Xen-devel] pciback+front needed
for hvm ?
Dom0 with pciback + DomU with
pcifront. pcifront grabs device during DomU boot and vendor driver then loads
against passthrough device and works great!
In the same scenario with HVM DomU,
is pcifront needed or does qemu provide the PCI Bus
?
Both Linux and Win32 hvm fail to
load the vendor driver against the PCI device. Is this a problem with qemu or is
further support needed in hvm domU for PCI
passthrough?
Thanks,
Tim
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