Thank you for your hint.
> Boot the system with the IOMMU off and find out what PCI device is at
> 05:01.0 using lspci. Assuming that it's not critical, try disabling or
> removing that component.
I can not see a 05:01.0 using lspci. There is however 05:0e.0, which is the RAID controller (Adaptec RAID 3405). It's kind of a critical component, so I can not disable it. ;)
Does this mean, it's impossible to make IOMMU work on this machine?
--
nilscaspar.ch
On 30.01.2013, at 05:52, Gordon Messmer <yinyang@xxxxxxxxx> wrote:
> On 01/29/2013 01:16 PM, Nils Caspar wrote:
>> Everything works so far, but when I add intel_iommu=on to the kernel
>> line of my grub.conf, Dracut gives my a kernel panic while booting. I
>> added "rdshell" to the command line and extracted the boot messages
>> via dmesg (http://nilscaspar.ch/centos-dmesg.log).
>
> Similar behavior has been diagnosed as a hardware bug:
> https://bugzilla.redhat.com/show_bug.cgi?id=605888
>
> Boot the system with the IOMMU off and find out what PCI device is at
> 05:01.0 using lspci. Assuming that it's not critical, try disabling or
> removing that component.
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