Good morning,
I need to use pciback.hide to hide a pci card because I want to pci passthrough that card to a domU. My hardware neither supports Intel-Vt-d nor AMD's IOMMU. Unfortunately this doesn't seem to work in Centos 54 anymore. I guess it doesn't work because it is not compiled into the kernel, but as a module. I got the following error in dmesg and the pci device is still listed in dom0 in lspci.
Bootdata ok (command line is ro root=/dev/dom0/root pciback.hide=(09:04.0)) Kernel command line: ro root=/dev/dom0/root pciback.hide=(09:04.0) Unknown boot option `pciback.hide=(09:04.0)': ignoring
I also tried to update initrd to include the module but got the same error message as above.
mkinitrd --with=pciback /boot/initrd-2.6.18-164.6.1.el5xen_pcipt 2.6.18-164.6.1.el5xen title CentOS (2.6.18-164.6.1.el5xen PCI PT) root (hd1,0) kernel /xen.gz-2.6.18-164.6.1.el5 module /vmlinuz-2.6.18-164.6.1.el5xen ro root=/dev/dom0/root pciback.hide=(09:04.0) module /boot/initrd-2.6.18-164.6.1.el5xen_pcipt
Is there any option to use pciback.hide kernel parameter without compiling a custom kernel?
Thanks in advance Günter Zimmermann
Hi,
after thinking about modules and modprobe.conf I added this line to modprobe.conf: options pciback hide=(09:04.0)
and rebuilt initrd. mkinitrd -v --with=pciback /boot/initrd-2.6.18-164.6.1.el5xen_pcipt 2.6.18-164.6.1.el5xen
after a reboot I found this message in dmesg: pciback 0000:09:04.0: seizing device
looks like it works, but I still have the device in lspci in dom0. Should it be listed in lspci if pciback is working or not?
Regards Günter Zimmermann
Günter Zimmermann schrieb:
Good morning,
I need to use pciback.hide to hide a pci card because I want to pci passthrough that card to a domU. My hardware neither supports Intel-Vt-d nor AMD's IOMMU. Unfortunately this doesn't seem to work in Centos 54 anymore. I guess it doesn't work because it is not compiled into the kernel, but as a module. I got the following error in dmesg and the pci device is still listed in dom0 in lspci.
Bootdata ok (command line is ro root=/dev/dom0/root pciback.hide=(09:04.0)) Kernel command line: ro root=/dev/dom0/root pciback.hide=(09:04.0) Unknown boot option `pciback.hide=(09:04.0)': ignoring
I also tried to update initrd to include the module but got the same error message as above.
mkinitrd --with=pciback /boot/initrd-2.6.18-164.6.1.el5xen_pcipt 2.6.18-164.6.1.el5xen title CentOS (2.6.18-164.6.1.el5xen PCI PT) root (hd1,0) kernel /xen.gz-2.6.18-164.6.1.el5 module /vmlinuz-2.6.18-164.6.1.el5xen ro root=/dev/dom0/root pciback.hide=(09:04.0) module /boot/initrd-2.6.18-164.6.1.el5xen_pcipt
Is there any option to use pciback.hide kernel parameter without compiling a custom kernel?
Thanks in advance Günter Zimmermann
And last but not least the whole thing seems to work. After adding pci = ['09:04.0'] to domU and installing pciutils in that domU I see the device listed there.
But I'm still unsure if it is okay to have it in lspci of dom0 too. Has someone else tried to use pciback as a module?
Regrds, Günter Zimmermann
Günter Zimmermann schrieb:
Hi,
after thinking about modules and modprobe.conf I added this line to modprobe.conf: options pciback hide=(09:04.0)
and rebuilt initrd. mkinitrd -v --with=pciback /boot/initrd-2.6.18-164.6.1.el5xen_pcipt 2.6.18-164.6.1.el5xen
after a reboot I found this message in dmesg: pciback 0000:09:04.0: seizing device
looks like it works, but I still have the device in lspci in dom0. Should it be listed in lspci if pciback is working or not?
Regards Günter Zimmermann
Günter Zimmermann schrieb:
Good morning,
I need to use pciback.hide to hide a pci card because I want to pci passthrough that card to a domU. My hardware neither supports Intel-Vt-d nor AMD's IOMMU. Unfortunately this doesn't seem to work in Centos 54 anymore. I guess it doesn't work because it is not compiled into the kernel, but as a module. I got the following error in dmesg and the pci device is still listed in dom0 in lspci.
Bootdata ok (command line is ro root=/dev/dom0/root pciback.hide=(09:04.0)) Kernel command line: ro root=/dev/dom0/root pciback.hide=(09:04.0) Unknown boot option `pciback.hide=(09:04.0)': ignoring
I also tried to update initrd to include the module but got the same error message as above.
mkinitrd --with=pciback /boot/initrd-2.6.18-164.6.1.el5xen_pcipt 2.6.18-164.6.1.el5xen title CentOS (2.6.18-164.6.1.el5xen PCI PT) root (hd1,0) kernel /xen.gz-2.6.18-164.6.1.el5 module /vmlinuz-2.6.18-164.6.1.el5xen ro root=/dev/dom0/root pciback.hide=(09:04.0) module /boot/initrd-2.6.18-164.6.1.el5xen_pcipt
Is there any option to use pciback.hide kernel parameter without compiling a custom kernel?
Thanks in advance Günter Zimmermann
CentOS-virt mailing list CentOS-virt@centos.org http://lists.centos.org/mailman/listinfo/centos-virt
Günter Zimmermann wrote:
And last but not least the whole thing seems to work. After adding pci = ['09:04.0'] to domU and installing pciutils in that domU I see the device listed there.
But I'm still unsure if it is okay to have it in lspci of dom0 too. Has someone else tried to use pciback as a module?
The device stills appears on dom0, this is the normal behavior.
Regards,
Miguel
-
Günter Zimmermann -
Miguel Di Ciurcio Filho