my Dom0 host runs,
uname -a
Linux test 2.6.34.8-7-xen #1 SMP 2011-01-20 21:58:39 +0100
x86_64 x86_64 x86_64 GNU/Linux
lsb_release -d
Description: openSUSE 11.3 (x86_64)
rpm -qa | grep -i Xen-4
xen-4.0.1_21326_02-0.3.1.x86_64
i've got 3 NICs,
lspci | grep -i eth
02:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd.
RTL8111/8168B PCI Express Gigabit Ethernet controller (rev 01)
03:00.0 Ethernet controller: Marvell Technology Group Ltd.
88E8053 PCI-E Gigabit Ethernet Controller (rev 20)
04:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd.
RTL8111/8168B PCI Express Gigabit Ethernet controller (rev 02)
where 04:00.0 is assigned as the internal-LAN/Bridge port, and 02:00.0 &
03:00.0 are PCIe cards that I intend to PCI-passthrough to a DomU guest.
so far, I've:
cat /boot/grub/menu.lst
...
kernel /xen.gz ... iommu=verbose dom0_vcpus_pin=true sched=credit
cpuidle=1 cpufreq=xen clocksource=acpi numa=on
module /vmlinuz-xen ... elevator=cfq clocksource=xen mce=off
nomodeset pciback.permissive
pciback.hide=(0000:02:00.0)(0000:03:00.0)
pci=resource_aligment=0000:02:00.0;0000:03:0.0
module /initrd-xen
...
cat /etc/modprobe.d/99-local.conf
options pciback hide=(0000:02:00.0)(0000:03:00.0)
install sky2 /sbin/modprobe pciback ; /sbin/modprobe
--first-time --ignore-install sky2
install r8169 /sbin/modprobe pciback ; /sbin/modprobe
--first-time --ignore-install r8169
cat /etc/init.d/boot.local
modprobe pciback hide='(02:00.0)(03.00.0)'
echo -n 0000:02:00.0 > sys/bus/pci/drivers/pciback/permissive
echo -n 0000:03:00.0 > sys/bus/pci/drivers/pciback/permissive
@ Dom0 boot, i only see ONE card seized,
dmesg | egrep -i seiz
[ 2.081944] pciback 0000:03:00.0: seizing device
and, of course as a result, for a guest,
cat test.cfg
...
extra = 'textmode=1 xencons=xvc0 elevator=noop iommu=soft'
pci = [ '02:00.0', '03:00.0']
...
xm create test.cfg
Error: pci: PCI Backend and pci-stub don't own device
0000:02:00.0
if i simply replace the 04:00.0 Realtek card with a non-r8619 driver
card, e.g.,
04:00.0 Ethernet controller: Atheros Communications
AR8121/AR8113/AR8114 Gigabit or Fast Ethernet (rev b0)
and repeat the experiment, then both cards are CORRECTLY seized,
dmesg | egrep -i seiz
[ 3.027654] pciback 0000:02:00.0: seizing device
[ 3.321515] pciback 0000:03:00.0: seizing device
and I can subsequently launch the DomU, with both cards successfully
passed through.
i.e., using two cards with the same driver type FAILS to allow one of
the cards to be seized.
i suspect this has to do with the driver not being unloadable at the
time of device seizure, as it's in use.
if that's the case -- how do i configure this so that the _same_ driver
can be used for _both_ the Dom0 card instance, and then appropriately
seized for the PCI-passthru target'd 2nd card?
or, is this another issue & there's addition/other config necessary?
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