Am 24.08.2010 12:36, schrieb Matej Zary:

On Tue, 2010年08月24日 at 10:51 +0200, Mike Fröhner wrote:

Hello Guys,
I have successfully upgraded xen-3.x to xen-4.0 with new kernel 2.6.34 @
gentoo. I had a backup-vm with a pci-passthru of an usb-hub.
old working:
module (hd0,0)/vmlinuz-2.6.31-xen-r11 root=/dev/sda2 max_loop=255
pciback.permissive pciback.hide=(00:1d.7)
new should working:
module (hd0,0)/vmlinuz-2.6.34-xen root=/dev/sda2 max_loop=255
xen-pciback.permissive xen-pciback.hide=(00:1d.7)
But if I boot dom0 I still can see the pci device and if try to start
the backup-vm (pci = [ '00:1d.7' ]) I got an error like:
Error: pci: PCI Backend and pci-stub don't own device .&checktime(0000,00,1,':')d.7.
linux # dmesg | grep '00:1d.7'
[ 0.000000] Command line: root=/dev/sda2 max_loop=255
xen-pciback.permissive xen-pciback.hide=(00:1d.7)
[ 0.000000] Kernel command line: root=/dev/sda2 max_loop=255
xen-pciback.permissive xen-pciback.hide=(00:1d.7)
[ 0.287474] pci .&checktime(0000,00,1,':')d.7: reg 10: [mem 0xfadda000-0xfadda3ff]
[ 0.287564] pci .&checktime(0000,00,1,':')d.7: PME# supported from D0 D3hot D3cold
[ 0.287570] pci .&checktime(0000,00,1,':')d.7: PME# disabled
[ 0.364988] pciback .&checktime(0000,00,1,':')d.7: probing...
[ 3.694092] ehci_hcd .&checktime(0000,00,1,':')d.7: PCI INT A -> GSI 23 (level, low)
-> IRQ 23
[ 3.695253] ehci_hcd .&checktime(0000,00,1,':')d.7: setting latency timer to 64
[ 3.695258] ehci_hcd .&checktime(0000,00,1,':')d.7: EHCI Host Controller
[ 3.695790] ehci_hcd .&checktime(0000,00,1,':')d.7: new USB bus registered, assigned
bus number 2
[ 3.696359] ehci_hcd .&checktime(0000,00,1,':')d.7: reset hcs_params 0x103206 dbg=1
cc=3 pcc=2 ordered !ppc ports=6
[ 3.696364] ehci_hcd .&checktime(0000,00,1,':')d.7: reset hcc_params 16871 thresh 7
uframes 1024 64 bit addr
[ 3.696421] ehci_hcd .&checktime(0000,00,1,':')d.7: debug port 1
[ 3.696747] ehci_hcd .&checktime(0000,00,1,':')d.7: reset command 080002 (park)=0
ithresh=8 period=1024 Reset HALT
[ 3.700657] ehci_hcd .&checktime(0000,00,1,':')d.7: cache line size of 256 is not
supported
[ 3.700660] ehci_hcd .&checktime(0000,00,1,':')d.7: supports USB remote wakeup
[ 3.700681] ehci_hcd .&checktime(0000,00,1,':')d.7: irq 23, io mem 0xfadda000
[ 3.701012] ehci_hcd .&checktime(0000,00,1,':')d.7: reset command 080002 (park)=0
ithresh=8 period=1024 Reset HALT
[ 3.704891] ehci_hcd .&checktime(0000,00,1,':')d.7: init command 010001 (park)=0
ithresh=1 period=1024 RUN
[ 3.720956] ehci_hcd .&checktime(0000,00,1,':')d.7: USB 2.0 started, EHCI 1.00
[ 3.729129] usb usb2: SerialNumber: .&checktime(0000,00,1,':')d.7
[ 3.747839] ehci_hcd .&checktime(0000,00,1,':')d.7: HS companion for .&checktime(0000,00,1,':')d.0
[ 3.752608] ehci_hcd .&checktime(0000,00,1,':')d.7: HS companion for .&checktime(0000,00,1,':')d.1
[ 3.758009] ehci_hcd .&checktime(0000,00,1,':')d.7: HS companion for .&checktime(0000,00,1,':')d.2
[ 3.830476] ehci_hcd .&checktime(0000,00,1,':')d.7: GetStatus port 6 status 001803
POWER sig=j CSC CONNECT
[ 4.070792] ehci_hcd .&checktime(0000,00,1,':')d.7: port 6 high speed
[ 4.070798] ehci_hcd .&checktime(0000,00,1,':')d.7: GetStatus port 6 status 001005
POWER sig=se0 PE CONNECT
[ 4.190294] ehci_hcd .&checktime(0000,00,1,':')d.7: port 6 high speed
[ 4.190301] ehci_hcd .&checktime(0000,00,1,':')d.7: GetStatus port 6 status 001005
POWER sig=se0 PE CONNECT
I checked all drivers in kernel0 and kernlU and i also checked
xen-pci-passthru option in kernel0 (CONFIG_XEN_PCIDEV_BACKEND_PASS=y).
Any ideas?
Thanks!

Hi there,
I guess this link is nothing new -
http://wiki.xensource.com/xenwiki/XenPCIpassthrough :)
The gentoo Dom0 kernel is pv_ops or Novell forwardported one (IIRC it's
NOT pvops)?
In that case it looks like you should use syntax like this (according to
that wiki page):
pciback.permissive
pciback.hide=(00:1d.7)(00:1a.0)(00:1a.1)(00:1a.7)(00:1b.0)
pci=resource_alignment=00:1a.7;00:1d.7
When I used pci-pass thru once, I had to blacklist the normal device
drivers of the pci card I was trying to assign to PV VM.
Hope that helps.
Matej

Thanks Matej!

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