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Re: [Xen-devel] Hypercall invoking

On Tue, May 10, 2016 at 6:12 AM, tutu sky <ooohooo_u@xxxxxxxxxxx> wrote:

From: Dario Faggioli <dario.faggioli@xxxxxxxxxx>
Sent: Tuesday, May 10, 2016 7:32 AM
To: tutu sky; Xen-devel@xxxxxxxxxxxxx
Subject: Re: [Xen-devel] Hypercall invoking

On Tue, 2016-05-10 at 06:49 +0000, tutu sky wrote:
> Hi,
> I added a new hypercall to xen successfully, but when i try to invoke
> it in dom0 using privcmd, i am unable to invoke (using XC), I must cd
> to /xen.x.y.z/tools/xcutils and then try to invoke hypercall by XC
> interface which i created for it.
> DO functions of hypercall is written in /xen/common/kernel.c.
> can you give me a clue?
That depends on what you are trying to achieve, and on what you have
implemented and how you have implemented it.

Actually, this is not the first time we tell you this: without you
being specific, we can't possibly help.

In this case, "being specific" would have meant specifying:
 - what is your final end goal

​I think Dario meant why you want to add a hypercall? What is your "final" goal​ to add the hypercall? Probably it is just unnecessary to add a hypercall to achieve your final goal.

​I'm just curious if you could give a self introduction. ;-)​

Meng Xu
PhD Student in Computer and Information Science
University of Pennsylvania
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