Hi
I'm interested in PCI passthrough support.
I downloaded Linux Kernel 2.6.28-rc7 and build and ran KVM (which

is KVM-79) on this kernel.

I started KVM with the following command-lines:

$ qemu-system-x86_64 -boot c -m 512 -hda test.qcow -localtime -k

en-us -pcidevice host=00:19.0

(00:19.0 is Intel(R) PRO/1000 Network Connection Device)
However, KVM caused the following errors:

Could not notify kernel about assigned device "00:19.0"

register_real_device: Device or resource busy

Segmantation_fault
dmesg messages were as follows:

$ dmesg

[  151.483167] [drm] Initialized drm 1.1.0 20060810

[  151.525100] pci 0000:00:02.0: PCI INT A -> GSI 16 (level, low)

-> IRQ 16

[  151.525105] pci 0000:00:02.0: setting latency timer to 64

[  151.525193] pci 0000:00:02.0: irq 505 for MSI/MSI-X

[  151.525309] [drm] Initialized i915 1.6.0 20080730 on minor 0

[  187.854117] set status page addr 0x00033000

[  823.246792] kvm: guest NX capability removed

[  823.311659] kvm: guest NX capability removed

[  823.487849] qemu-system-x86[5940]: segfault at 1dc ip 0807c446

sp 96420110 error 4 in qemu-system-x86_64[8048000+194000]

[  837.010304] kvm: guest NX capability removed

[  837.019163] e1000e 0000:00:19.0: BAR 0: can't reserve mem

region [0xe0400000-0xe041ffff]

[  837.019163] kvm_vm_ioctl_assign_device: Could not get access to

device regions

[  837.019194] kvm: guest NX capability removed

[  837.219560] qemu-system-x86[5944]: segfault at 1dc ip 0807c446

sp 9636b110 error 4 in qemu-system-x86_64[8048000+194000]
I think that my cpu and my chipset maybe support VT-x and VT-d.

http://www.intel.co.jp/products/desktop/motherboards/dq35jo/dq35jo-overv...

CPU: Intel(R) Core(TM) 2 Duo CPU E6

chipset: Intel(R) Q35 Express Chipset
Any advive or tips will help ?
Thanks,

Kazushi

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