Re: [Xen-users] problem of xen PCI-passthrough

["Sergio Charpinel Jr." <sergiocharpinel@xxxxxxxxx>]

How did you hide the device?

Try to hide it before loading the driver, eg. pciback.hide in module line in kernel boot parameter. Also try to add pciback.permissive

2010/6/8 Mingfan Lu <mingfan.lu@gmail.com>

Hi

 My Configuration

 Xen-4.0 + DOM0(2.6.31.13 pv) + DOMU(2.6.31.13 pv)

 The domu’s configuration is

DOMU configuration:

 

#=======xenu.conf========

kernel = "/opt/need_packages/Kernel/euca_install/images/lamp_minimal/vmlinuz-2.6.31.13"

ramdisk = "/opt/need_packages/Kernel/euca_install/images/lamp_minimal/initrd-2.6.31.13.img" #can be created by "mkinitrd"

memory = 512

vcpus=1

name = "ExampleDomainXenU"

pci=['01:00.1']

vif = [ ]

disk = [ 'file:/opt/need_packages/Kernel/euca_install/images/lamp_minimal/mini-lamp.fs,xvda1,w','file:/opt/need_packages/Kernel/euca_install/images/lamp_minimal/ephemeral,xvda2,w','file:/opt/need_packages/Kernel/euca_install/images/lamp_minimal/swap,xvda3,w' ]

root = "/dev/xvda1"

extra = "3 swiotlb=force"

 

 I have hidden the pci device to my Domu before create the instance.

 

 Checking: xm pci-list

 xm pci-list 4

domain bus  slot func

0x0000 0x01 0x00 0x1

 

 But in the domu, using lspci, I could get nothing

 In dmesg’s output, I find that:

 

[    0.055642] pci_hotplug: PCI Hot Plug PCI Core version: 0.5

[    0.057885] pcifront pci-0: backend going away!

[    0.060359] pcifront pci-0: Device is in 6 state. Need to change state on the privileged domain.

 

What happened?

Thanks 

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--
Sergio Roberto Charpinel Jr.

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