[Xen-users] Re: pcihide does not work anymore

[Mike Fröhner <mikefroehner@xxxxxx>]

Am 24.08.2010 12:36, schrieb Matej Zary:
> On Tue, 2010-08-24 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 0000:00:1d.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 0000:00:1d.7: reg 10: [mem 0xfadda000-0xfadda3ff]
> > [    0.287564] pci 0000:00:1d.7: PME# supported from D0 D3hot D3cold
> > [    0.287570] pci 0000:00:1d.7: PME# disabled
> > [    0.364988] pciback 0000:00:1d.7: probing...
> > [    3.694092] ehci_hcd 0000:00:1d.7: PCI INT A ->  GSI 23 (level, low)
> > ->  IRQ 23
> > [    3.695253] ehci_hcd 0000:00:1d.7: setting latency timer to 64
> > [    3.695258] ehci_hcd 0000:00:1d.7: EHCI Host Controller
> > [    3.695790] ehci_hcd 0000:00:1d.7: new USB bus registered, assigned
> > bus number 2
> > [    3.696359] ehci_hcd 0000:00:1d.7: reset hcs_params 0x103206 dbg=1
> > cc=3 pcc=2 ordered !ppc ports=6
> > [    3.696364] ehci_hcd 0000:00:1d.7: reset hcc_params 16871 thresh 7
> > uframes 1024 64 bit addr
> > [    3.696421] ehci_hcd 0000:00:1d.7: debug port 1
> > [    3.696747] ehci_hcd 0000:00:1d.7: reset command 080002 (park)=0
> > ithresh=8 period=1024 Reset HALT
> > [    3.700657] ehci_hcd 0000:00:1d.7: cache line size of 256 is not
> > supported
> > [    3.700660] ehci_hcd 0000:00:1d.7: supports USB remote wakeup
> > [    3.700681] ehci_hcd 0000:00:1d.7: irq 23, io mem 0xfadda000
> > [    3.701012] ehci_hcd 0000:00:1d.7: reset command 080002 (park)=0
> > ithresh=8 period=1024 Reset HALT
> > [    3.704891] ehci_hcd 0000:00:1d.7: init command 010001 (park)=0
> > ithresh=1 period=1024 RUN
> > [    3.720956] ehci_hcd 0000:00:1d.7: USB 2.0 started, EHCI 1.00
> > [    3.729129] usb usb2: SerialNumber: 0000:00:1d.7
> > [    3.747839] ehci_hcd 0000:00:1d.7: HS companion for 0000:00:1d.0
> > [    3.752608] ehci_hcd 0000:00:1d.7: HS companion for 0000:00:1d.1
> > [    3.758009] ehci_hcd 0000:00:1d.7: HS companion for 0000:00:1d.2
> > [    3.830476] ehci_hcd 0000:00:1d.7: GetStatus port 6 status 001803
> > POWER sig=j CSC CONNECT
> > [    4.070792] ehci_hcd 0000:00:1d.7: port 6 high speed
> > [    4.070798] ehci_hcd 0000:00:1d.7: GetStatus port 6 status 001005
> > POWER sig=se0 PE CONNECT
> > [    4.190294] ehci_hcd 0000:00:1d.7: port 6 high speed
> > [    4.190301] ehci_hcd 0000:00:1d.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
Shame on me :( Oh wow, now i know what I did wrong. I thought with 
update to xen-4.0 the pcihide param changed. My mistake was the missing 
driver after updating kernel. Thatswhy the right pcihide param didnt work.
Thanks Matej!



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