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Re: [help] Xen 4.14.5 on Devuan 4.0 Chimaera, regression from Xen 4.0.1


  • To: Denis <tachyon_gun@xxxxxx>, Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
  • From: Jan Beulich <jbeulich@xxxxxxxx>
  • Date: Mon, 20 Mar 2023 15:23:40 +0100
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  • Cc: Roger Pau Monné <roger.pau@xxxxxxxxxx>, xen-devel@xxxxxxxxxxxxxxxxxxxx
  • Delivery-date: Mon, 20 Mar 2023 14:23:50 +0000
  • List-id: Xen developer discussion <xen-devel.lists.xenproject.org>

On 20.03.2023 13:46, Denis wrote:
> On 20.03.2023 12:01, Andrew Cooper wrote:
>> On 19/03/2023 7:38 pm, Denis wrote:
>>> As you suspected, there are a few IO page faults at the end of the boot 
>>> process
>>> (from my limited understanding it's maybe related to 
>>> "00:14.0 SMBus: Advanced Micro Devices, Inc. [AMD/ATI] SBx00 SMBus 
>>> Controller (rev 41)")
>>>
>>> I'll attach the "xl dmesg" output file.
>>
>> Do you have this file?
>>
>> If they're only at the end of boot and not later around passthrough,
>> then they might be from other functionality in the Southbridge.
> 
> Sorry, my bad, forgot to attach it :(
> 
> After booting, the messages appear only ant the end, yet when running the HVM 
> domU,
> a few lines pop up there as well.

The addresses are always in the HyperTransport interrupt remapping range,
so to me this is a fair indication of there being something amiss IO-APIC-
wise. As it stands I only view the "disable intremap" route as appropriate
for this system.

Jan



 


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