Re: NetBSD vs Linux

[Victor Dorneanu <victor%dornea.nu@localhost>]

Some updates:

I managed it to get the whole thing working. I've been using this config:

    kernel = "/vmlinux-2.6.30"
    ramdisk = "/initrd.img-2.6.30"
    memory = 156
    name = "debian"
    disk = [ 'phy:/dev/wd0g,xvda,w' ]
    vif = [ 'bridge=bridge0'  ]
    root = "/dev/xvda"
    pci = [ '0000:03:00.0']
    #extra = "xencons=tty1"
    extra = "1"

"vmlinux-2.6.30" is a fresh compiled (uncompressed) Linux image. Since I
was able to boot Linux, that wasn't difficult at all. For some reasons
the boot process hangs when I boot in runlevel 2 (thats why I use
extra="1"). That issue has to be investigated too.

You might have noticed the "pci=" line in my config which should be a
PCI passthrough to my domU. dmesg tells me:

    $ dmesg | grep -e "PCI" -e "pci"
    [    0.000000] Allocating PCI resources starting at 10000000 (gap:
9c00000:f6400000)
    [    0.005111] PCI: Fatal: No config space access function found
    [    0.012608] PCI: System does not support PCI
    [    0.012615] PCI: System does not support PCI
    [    0.051897] pci_hotplug: PCI Hot Plug PCI Core version: 0.5
    [    0.052676] pciehp: PCI Express Hot Plug Controller Driver
version: 0.4
    [    0.052683] acpiphp: ACPI Hot Plug PCI Controller Driver version: 0.5
    [    0.052696] cpcihp_zt5550: ZT5550 CompactPCI Hot Plug Driver
version: 0.2
    [    0.052702] cpcihp_generic: Generic port I/O CompactPCI Hot Plug
Driver version: 0.1
    [    0.052709] cpcihp_generic: not configured, disabling.
    [    0.052761] shpchp: Standard Hot Plug PCI Controller Driver
version: 0.4
    [    0.164017] XENBUS: Device with no driver: device/pci/0

... and lspci shows me nothing:
   
    $ lspci
    $

Ok. I thought that might be general Xen 3.x issue till I used
"vmlinuz-2.6.18-xen" as kernel:

    kernel = "/vmlinuz-2.6.18-xen"
    ramdisk = "/initrd.img-2.6.30"
    memory = 156
    name = "debian"
    disk = [ 'phy:/dev/wd0g,xvda,w' ]
    ...

dmesg shows:

    $ dmesg | grep -e pci -e PCI
    PCI: setting up Xen PCI frontend stub
    PCI: System does not support PCI
    PCI: System does not support PCI
    pcifront pci-0: Installing PCI frontend
    pcifront pci-0: Creating PCI Frontend Bus 0000:03

lspci:

    $ lspci
    03:00.0 Network controller: Intel Corporation PRO/Wireless 4965 AG
or AGN [Kedron] Network Connection (rev 61)
    $


There has to be an easy way how to use your own kernel and export
devices to your domU's.

-- 
Victor Dorneanu