From: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
To: dev001 <pgngw+dev001+xen-users@f-m.fm>
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, 3 Feb 2011 12:42:04 -0500 [thread overview]
Message-ID: <20110203174204.GA5677@dumpdata.com> (raw)
In-Reply-To: <1296753170.32147.1418788499@webmail.messagingengine.com>
On Thu, Feb 03, 2011 at 09:12:50AM -0800, dev001 wrote:
> 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
Yeeey! No idea why the previous steps didn't assign it to pciback. Looks like
it is ignoring your wishes from /etc/modprobe.d/* files.
prev parent reply other threads:[~2011-02-03 17:42 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
2011-02-03 17:42 ` Konrad Rzeszutek Wilk [this message]
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