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Re: [Xen-devel] [TestDay] Xen crash on boot



On 24/01/2014 00:47, Eric Houby wrote:
> On Thu, 2014-01-23 at 11:16 +0000, Jan Beulich wrote:
>
>> But you didn't turn on interrupt remapping, or it got forcibly
>> disabled:
>>
>> [Firmware Bug]: AMD-Vi: No southbridge IOAPIC found
>> AMD-Vi: Disabling interrupt remapping
>
> Jan,
>
> If there is not a specific switch required to enable interrupt remapping
> while booting 3.12.7 on bare hardware, then it was forcibly disabled.
> Would boot logs from xen 4.1.3 be helpful?  If so, they are attached.
>
>> If
>> the kernel responds to that mentioned firmware bug by forcing
>> interrupt remapping off, maybe we would have to do the same...
>>
>> Jan
>
>
> That would be better than xen failing to boot.
>
>
> Thanks,
>
> -Eric

You probably want "iommu=debug,verbose" rather than verbos

~Andrew

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