From: "dev001" <pgngw+dev001+xen-users@f-m.fm>
To: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Cc: xen-devel@lists.xensource.com
Subject: Re: how to PCI-passthrough 1 card to a DomU when another @ Dom0 uses the same driver?
Date: Thu, 03 Feb 2011 09:12:50 -0800 [thread overview]
Message-ID: <1296753170.32147.1418788499@webmail.messagingengine.com> (raw)
In-Reply-To: <20110203162652.GA3712@dumpdata.com>
hi,
> readlink //sys/bus/pci/devices/0000:04:00.0/driver
> ../../../../bus/pci/drivers/pciback
>
> I want you to do for 02:00.0 and see if it points to pciback before you
> launch any guests.
thanks for clarifying that.
not exhaustive, but hopefully sufficiently informative,
grep PCI /boot/config-2.6.34.8-8-xen | grep BACK
CONFIG_XEN_PCIDEV_BACKEND=m
CONFIG_XEN_PCIDEV_BACKEND_VPCI=y
# CONFIG_XEN_PCIDEV_BACKEND_PASS is not set
# CONFIG_XEN_PCIDEV_BACKEND_SLOT is not set
# CONFIG_XEN_PCIDEV_BACKEND_CONTROLLER is not set
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)
######################
case 1)
grep pci /boot/grub/menu.lst
module /vmlinuz-xen ...
pci=resource_aligment=0000:02:00.0;0000:03:0.0
cat /etc/init.d/boot.local
(empty)
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
reboot
dmesg | grep -i seiz
(empty)
readlink //sys/bus/pci/devices/0000:02:00.0/driver
../../../../bus/pci/drivers/r8169
readlink //sys/bus/pci/devices/0000:03:00.0/driver
../../../../bus/pci/drivers/sky2
readlink //sys/bus/pci/devices/0000:04:00.0/driver
../../../../bus/pci/drivers/r8169
######################
case 2)
grep pci /boot/grub/menu.lst
module /vmlinuz-xen ...
pci=resource_aligment=0000:02:00.0;0000:03:0.0
pciback.hide=(0000:02:00.0)(0000:03:00.0)
cat /etc/init.d/boot.local
(empty)
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
reboot
dmesg | grep -i seiz
[ 2.083424] pciback 0000:03:00.0: seizing device
readlink //sys/bus/pci/devices/0000:02:00.0/driver
../../../../bus/pci/drivers/r8169
readlink //sys/bus/pci/devices/0000:03:00.0/driver
../../../../bus/pci/drivers/pciback
readlink //sys/bus/pci/devices/0000:04:00.0/driver
../../../../bus/pci/drivers/r8169
######################
case 3)
grep pci /boot/grub/menu.lst
module /vmlinuz-xen ...
pci=resource_aligment=0000:02:00.0;0000:03:0.0
pciback.hide=(0000:02:00.0)(0000:03:00.0)
cat /etc/init.d/boot.local
(empty)
cat /etc/modprobe.d/99-local.conf
(empty)
reboot
dmesg | grep -i seiz
[ 2.077673] pciback 0000:03:00.0: seizing device
readlink //sys/bus/pci/devices/0000:02:00.0/driver
../../../../bus/pci/drivers/r8169
readlink //sys/bus/pci/devices/0000:03:00.0/driver
../../../../bus/pci/drivers/pciback
readlink //sys/bus/pci/devices/0000:04:00.0/driver
../../../../bus/pci/drivers/r8169
######################
case 3)
grep pci /boot/grub/menu.lst
module /vmlinuz-xen ...
pci=resource_aligment=0000:02:00.0;0000:03:0.0
cat /etc/init.d/boot.local
DEV="0000:02:00.0 0000:03:00.0"
for BDF in $DEV
do
[ ! -e /sys/bus/pci/devices/$BDF/driver/unbind ] || \
echo -n $BDF >
/sys/bus/pci/devices/$BDF/driver/unbind
echo -n $BDF > /sys/bus/pci/drivers/pciback/new_slot
echo -n $BDF > /sys/bus/pci/drivers/pciback/bind
echo -n $BDF > sys/bus/pci/drivers/pciback/permissive
done
cat /etc/modprobe.d/99-local.conf
(empty)
reboot
dmesg | grep -i seiz
[ 32.664674] pciback 0000:02:00.0: seizing device
[ 32.688310] pciback 0000:03:00.0: seizing device
readlink //sys/bus/pci/devices/0000:02:00.0/driver
../../../../bus/pci/drivers/pciback
readlink //sys/bus/pci/devices/0000:03:00.0/driver
../../../../bus/pci/drivers/pciback
readlink //sys/bus/pci/devices/0000:04:00.0/driver
../../../../bus/pci/drivers/r8169
> > CONFIG_XEN_PCIDEV_BACKEND=m <--------------------
>
> Pfff.. sucks.
curious, why? and if it legitimately does, any clue why @opensuse does
it that way?
> > > What happens if you 'rmmod sky2' or blacklist the sky2 driver?
i assume a still relevant question ... so, try this for which of the
above (or other?) cases?
thanks.
next prev parent reply other threads:[~2011-02-03 17:12 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-02-02 5:03 how to PCI-passthrough 1 card to a DomU when another @ Dom0 uses the same driver? dev001
2011-02-02 20:27 ` Konrad Rzeszutek Wilk
2011-02-02 21:43 ` dev001
2011-02-02 22:26 ` dev001
2011-02-03 16:26 ` Konrad Rzeszutek Wilk
2011-02-03 17:12 ` dev001 [this message]
2011-02-03 17:42 ` Konrad Rzeszutek Wilk
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