From: Andrii Tseglytskyi <andrii.tseglytskyi@globallogic.com>
To: Andrew Cooper <andrew.cooper3@citrix.com>
Cc: Keir Fraser <keir@xen.org>, Tim Deegan <tim@xen.org>,
Ian Jackson <Ian.Jackson@eu.citrix.com>,
Ian Campbell <Ian.Campbell@eu.citrix.com>,
Jan Beulich <JBeulich@suse.com>,
xen-devel <xen-devel@lists.xenproject.org>
Subject: Re: [PATCH v2] domctl: tighten XEN_DOMCTL_*_permission
Date: Fri, 15 Aug 2014 15:22:20 +0300 [thread overview]
Message-ID: <CAH_mUMOBhfD3coznFHumTLnyA0s2wSby+fb38-avW+8gN81-1w@mail.gmail.com> (raw)
In-Reply-To: <53EDF6BF.70106@citrix.com>
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
prev parent reply other threads:[~2014-08-15 12:22 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-05-06 13:08 [PATCH v2] domctl: tighten XEN_DOMCTL_*_permission Jan Beulich
2014-05-08 11:20 ` Tim Deegan
2014-08-15 10:00 ` Andrii Tseglytskyi
2014-08-15 10:36 ` Andrew Cooper
2014-08-15 11:02 ` Andrii Tseglytskyi
2014-08-15 12:02 ` Andrew Cooper
2014-08-15 12:22 ` Andrii Tseglytskyi [this message]
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