On Mon, May 09, 2011 at 01:48:03PM +0200, Robin Axelsson wrote: > On 2011-05-09 08:45, Pasi Kärkkäinen wrote: >> On Fri, May 06, 2011 at 04:18:14PM +0200, Robin Axelsson wrote: >>> On 2011-05-06 08:03, Pasi Kärkkäinen wrote: >>>> On Thu, May 05, 2011 at 07:48:36PM +0200, Robin Axelsson wrote: >>>>> Hi, >>>>> I have compiled Jeremy's kernel on Fedora 14 and it turned out that >>>>> xen-pciback is compiled into the kernel as a module. So I made a >>>>> "xen-pciback.conf" file in /etc/modprobe.d. The problem is that I have >>>>> to get modprobe to load before the drivers to the PCI devices I want to >>>>> hide are loaded. >>>>> >>>>> So my question is how do I locate the drivers and find the points in the >>>>> boot scripts where I can put the modprobe so that it is loaded before >>>>> them? I tried lsmod and modinfo but they don't give much information. I >>>>> only managed to find the driver for the Intel EXPI9400PT adapter e1000e. >>>>> >>>>> I want to hide the graphics adapter (Radeon 5450), Two USB2.0 ports, the >>>>> Intel adapter, the USB3.0 controller and the Audio device, their >>>>> assignments on machine are as follows: >>>>> >>>>> pci_0000_00_02_0 (GPU) >>>>> pci_0000_00_12_0 (USB 2.0 should give 2 ports) >>>>> pci_0000_00_14_2 (Audio device) >>>>> pci_0000_00_0a_0 (Intel Adapter) >>>>> pci_0000_00_09_0 (USB 3.0 Interface) >>>>> >>>>> but the question is where can I locate their drivers and how can I tap >>>>> into the boot sequence so that the xen-pciback driver is loaded >>>>> beforehand? The page >>>>> >>>>> http://wiki.xensource.com/xenwiki/Assign_hardware_to_DomU_with_PCIBack_as_module >>>>> >>>>> gives no information about this. It mentions something about "install >>>>> skge ... " but it doesn't say where this line is to be put and how you >>>>> figure out that skge is the driver to be disabled. >>>>> >>>> You probably should add the modules to be loaded from initrd image. >>>> >>>> Are you using mkinitrd? If yes, there's an option to preload modules.. >>>> >>>> -- Pasi >>> I issued the command >>> >>> mkinitrd -v -f --preload xen-pciback /boot/initramfs-2.6.32.39.img >>> 2.6.32.39 >>> >>> and I noticed that the initramfs image file generated is considerably >>> smaller than the initramfs imagefile generated by dracut. The dracut >>> file is a bit over 80 MB whereas the new one is less than 8 MB. >>> >>> But the preload doesn't load the xen-pciback module. After the reboot >>> when I list assignable PCI devices using xm, Xen returns nothing. If I >>> issue 'modprobe xen-pciback' and then list the devices using xm I get >>> one entry. What's wrong? >>> >> Hmm.. Is it possible that the other xen-related required modules >> are not yet loaded at that point, so loading xen-pciback fails? >> >> You could always extract initramfs-2.6.32.39.img and read the 'init' >> script in it and see what it's trying to do.. >> >> -- Pasi >> > > Perhaps you know how to extract the initramfs? I'm unable to find the > compression headers and I'm not sure what headers to look for. In the > first step I tried to locate the gzip header: > They're usually gzipped cpio archives. So something like this should work: mkdir temp && cd temp && zcat /boot/initramfs-version.img | cpio -i -d -- Pasi > # grep -a -b --only-matching $'\x8B'$'\x08' \boot\initramfs-`uname -r`.img > (offset1): (pattern) > ... > (offset<n>): (pattern) > # dd if=/boot/intramfs-`uname -r`.img bs=1 skip=(offset1) | gunzip > > myimagefile > > but I'm unable to get to the cpio file. I tried once again grepping for > compression headers in myimagefile but I couldn't find anything. It > appears not to be compressed with zx, bzip2 or gzip. I could not use > cpio on the file directly either. > > Robin. > > >>>>> I have set up the machine to init level 3 in the /etc/inittab (my >>>>> install of F14 have no upstart targets). The xen-pciback module seems to >>>>> be working. Something is wrong with the onboard sound chip. No drivers >>>>> have ever successfully initiated it, neither in Windows nor Linux. So it >>>>> is marked as an assignable device when looking it up with xm. >>>>> >>>>> Regards >>>>> >>>>> Robin. >>>>> >>>>> -- >>>>> xen mailing list >>>>> xen@xxxxxxxxxxxxxxxxxxxxxxx >>>>> https://admin.fedoraproject.org/mailman/listinfo/xen >>>> . >>>> >>> -- >>> xen mailing list >>> xen@xxxxxxxxxxxxxxxxxxxxxxx >>> https://admin.fedoraproject.org/mailman/listinfo/xen >> . >> > -- xen mailing list xen@xxxxxxxxxxxxxxxxxxxxxxx https://admin.fedoraproject.org/mailman/listinfo/xen
