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Re: [Xen-devel] Hypercalls from user-space
| To: | Jeremy Fitzhardinge <jeremy@xxxxxxxx> |
|---|---|
| Subject: | Re: [Xen-devel] Hypercalls from user-space |
| From: | Keir Fraser <keir@xxxxxxx> |
| Date: | Wed, 06 Oct 2010 07:46:40 +0100 |
| Cc: | xen-devel@xxxxxxxxxxxxxxxxxxx, "Srujan D. Kotikela" <ksrujandas@xxxxxxxxx> |
| Delivery-date: | Tue, 05 Oct 2010 23:47:38 -0700 |
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| Thread-topic: | [Xen-devel] Hypercalls from user-space |
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On 05/10/2010 23:37, "Jeremy Fitzhardinge" <jeremy@xxxxxxxx> wrote:
> On 10/05/2010 03:09 PM, Keir Fraser wrote:
>> /proc/xen/privcmd should be available in domU as well. You might need to
>> enable some dom0 build config options to get it though.
>
> xenfs doesn't init privcmd on non-privileged kernels.
It ought to. Files like xsd_{kva,port} don't make sense for a domU, but
privcmd at least does as there's no reason a suitably privileged domU
userspace shouldn't be able to make hypercalls at the privilege level of the
domU.
-- Keir
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