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Re: [PATCH v3] SUPPORT.md: split XSM from Flask
- To: Roger Pau Monné <roger.pau@xxxxxxxxxx>
- From: Jan Beulich <jbeulich@xxxxxxxx>
- Date: Wed, 4 Sep 2024 11:38:14 +0200
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- Cc: "xen-devel@xxxxxxxxxxxxxxxxxxxx" <xen-devel@xxxxxxxxxxxxxxxxxxxx>, Andrew Cooper <andrew.cooper3@xxxxxxxxxx>, Julien Grall <julien@xxxxxxx>, Stefano Stabellini <sstabellini@xxxxxxxxxx>, Daniel Smith <dpsmith@xxxxxxxxxxxxxxxxxxxx>
- Delivery-date: Wed, 04 Sep 2024 09:38:22 +0000
- List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
On 04.09.2024 11:21, Roger Pau Monné wrote:
> On Wed, Aug 14, 2024 at 09:44:11AM +0200, Jan Beulich wrote:
>> XSM is a generic framework, which in particular is also used by SILO.
>> With this it can't really be experimental: Arm mandates SILO for having
>> a security supported configuration.
>>
>> Signed-off-by: Jan Beulich <jbeulich@xxxxxxxx>
>
> Reviewed-by: Roger Pau Monné <roger.pau@xxxxxxxxxx>
Thanks.
>> @@ -788,6 +796,13 @@ Please see XSA-77 for more details.
>> The default policy includes FLASK labels and roles for a "typical"
>> Xen-based system
>> with dom0, driver domains, stub domains, domUs, and so on.
>>
>> +### SILO XSM Module
>> +
>> +SILO implements a policy whereby DomU-s can only communicate with Dom0, yet
>> not
>> +with each other.
>
> Might be good to clarify SILO is just like the dummy XSM
> implementation without allowing inter-domain communication, ie:
>
> "SILO extends the dummy XSM policy by enforcing that DomU-s can only
> communicate with Dom0, yet not with each other."
>
> Or similar.
Fine with me - adjusted.
Jan
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