This works with non-HVM guest easy, I am
using it for an X server and the Nvidia drivers work great ..
All the I/O and Mem resources map through
correctly with HVM guest but driver fails to load (Code 12). Yes, I agree ioemu
is doing the work to present the PCI Bus to HVM so what is missing from ioemu
to allow this to work with HVM ?
Thanks,
Tim
From:
Cui, Dexuan [mailto:dexuan.cui@xxxxxxxxx]
Sent: 14 April 2009 00:47
To: Tim
Moore; Kay, Allen M; xen-devel@xxxxxxxxxxxxxxxxxxx
Subject: RE: pciback+front needed
for hvm ?
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
