Re: [Xen-devel] [PATCH v2] domctl: tighten XEN_DOMCTL_*_permission

[Andrii Tseglytskyi <andrii.tseglytskyi@xxxxxxxxxxxxxxx>]

Hi Andrew,

>>  But in current implementation pirq_access_permitted() returns
>> 0 if resource is not found.
>
> Correct, and that is the point.
>
> If the current domain does not have permissions to use a certain pirq,
> it does not have permission to alter the permission of another domain,
> with respect to this pirq.  Note that by permitting/denying access to a
> target domain, the current domain does not loose its existing permissions.
>

Thank you. This is the answer for my question. Now got it.

Regards,
Andrii


-- 

Andrii Tseglytskyi | Embedded Dev
GlobalLogic
www.globallogic.com

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