[Xen-users] hvm linux and vt-d problems

[dongle <m.wessler@xxxxxx>]

Hi,

I tried to enable pci-passthrough (NIC) to hvm guest, but the guest system
does not see any pci devices.

My installation was made on debian with backport ( xen 3.2.0-3~bpo4+2 ). On
my pc ( hp dc7800 E6750) I enabled vt-d. Windows/ Linux guests in hvm-mode
works fine, but no pci-passthrough.

I there something wrong ?

# xm dmesg|grep -i vt-d
(XEN) Intel VT-d has been enabled
(XEN) [VT-D]intel-iommu.c:1060:d32767 domain_context_mapping_one:context
present:bdf=0:1e:0
(XEN) [VT-D]intel-iommu.c:1060:d32767 domain_context_mapping_one:context
present:bdf=7:0:0
(XEN) [VT-D]intel-iommu.c:1060:d32767 domain_context_mapping_one:context
present:bdf=7:0:1
(XEN) [VT-D]intel-iommu.c:1060:d32767 domain_context_mapping_one:context
present:bdf=7:0:2
(XEN) [VT-D]intel-iommu.c:1060:d32767 domain_context_mapping_one:context
present:bdf=7:0:3
(XEN) [VT-D]intel-iommu.c:1060:d32767 domain_context_mapping_one:context
present:bdf=7:0:4
(XEN) [VT-D]intel-iommu.c:1060:d32767 domain_context_mapping_one:context
present:bdf=7:0:5
(XEN) [VT-D]intel-iommu.c:1060:d32767 domain_context_mapping_one:context
present:bdf=7:0:6
(XEN) [VT-D]intel-iommu.c:1060:d32767 domain_context_mapping_one:context
present:bdf=7:0:7
(XEN) [VT-D]intel-iommu.c:1060:d32767 domain_context_mapping_one:context
present:bdf=7:1:0
(XEN) [VT-D]intel-iommu.c:769: iommu_page_fault: iommu->reg = fff75000
(XEN) [VT-D]intel-iommu.c:752: iommu_page_fault:DMA Read: DEVICE 0:1d.1 addr
7d2ce000 REASON 6

# cat /boot/grub/menu.lst|grep pci
module          /boot/vmlinuz-2.6.18-6-xen-686 root=/dev/md0 ro console=tty0
pci=nommconf noirqdebug nousb pciback.permissive
pciback.hide=(07:04.0)(07:09.0)(07:0b.0)




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