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Re: [Xen-devel] Having a DOM-U guest with 1:1 mapping in the second stage MMU.
- To: Julien Grall <julien@xxxxxxx>
- From: Andrei Cherechesu <andrei.cherechesu@xxxxxxx>
- Date: Thu, 13 Feb 2020 17:27:25 +0000
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- Cc: "xen-devel@xxxxxxxxxxxxxxxxxxxx" <xen-devel@xxxxxxxxxxxxxxxxxxxx>, Stefano Stabellini <sstabellini@xxxxxxxxxx>
- Delivery-date: Thu, 13 Feb 2020 17:27:40 +0000
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- Thread-topic: [Xen-devel] Having a DOM-U guest with 1:1 mapping in the second stage MMU.
-----Original Message-----
From: Julien Grall <julien@xxxxxxx>
Sent: Thursday, February 13, 2020 00:03
To: Stefano Stabellini <sstabellini@xxxxxxxxxx>; Andrei Cherechesu
<andrei.cherechesu@xxxxxxx>
Cc: Jorge Pereira <jorge.pereira@xxxxxxx>; xen-devel@xxxxxxxxxxxxxxxxxxxx
Subject: Re: [Xen-devel] Having a DOM-U guest with 1:1 mapping in the second
stage MMU.
Hello,
I used the Xen from Stefano's tree and made the updates to the partial
dtb that he specified.
> This is mostly likely because Linux is trying to access a region
> that is not mapped in stage-2. You can rebuild Xen with debug enabled
> and you should see a message "traps.c:..." telling the exact physical
> address accessed.
>
> In general I would recommend to build Xen with debug enabled during
> development as the hypervisor will give you more information of what's going
> on.
>
> Cheers,
>
> --
> Julien Grall
I enabled debug config and gave it another try. But I'm still
getting the same unhandled fault error, that seems to match what
Julien described above.
It is indeed a stage-2 abort caused by the guest.
I attached the DomU1 crash log at [0].
[0] https://pastebin.com/BSHVFQiK
How should I proceed in this case?
Thank you again for your support,
Andrei
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