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Re: [Xen-devel] Hypercalls from user-space

  • To: Jeremy Fitzhardinge <jeremy@xxxxxxxx>
  • From: "Srujan D. Kotikela" <ksrujandas@xxxxxxxxx>
  • Date: Tue, 5 Oct 2010 16:31:09 -0500
  • Cc: xen-devel@xxxxxxxxxxxxxxxxxxx
  • Delivery-date: Tue, 05 Oct 2010 14:32:04 -0700
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  • List-id: Xen developer discussion <xen-devel.lists.xensource.com>
Hi Jeremy,

I am able to do hypercalls in privileged domain. i want to invoke hypercalls (to send EVENT notifications) from DomU.
Amy pointers for the same would be appreciated.

--
Srujan D. Kotikela


On Fri, Sep 24, 2010 at 2:14 PM, Jeremy Fitzhardinge <jeremy@xxxxxxxx> wrote:
 On 09/24/2010 11:38 AM, Srujan D. Kotikela wrote:
> Hi,
>
> Can anyone tell me how to invoke hypercalls from user space? Or any
> pointers for the same.
>
> It's urgent, please help.
>

You can't directly invoke hypercalls from userspace.   In a privileged
domain you can use ioctls on /proc/xen/privcmd.

   J

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