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[Xen-devel] running a task (thread) directly on hardware

  • To: "Xen-devel@xxxxxxxxxxxxx" <Xen-devel@xxxxxxxxxxxxx>
  • From: tutu sky <ooohooo_u@xxxxxxxxxxx>
  • Date: Fri, 22 Apr 2016 08:22:00 +0000
  • Accept-language: en-US
  • Delivery-date: Fri, 22 Apr 2016 08:22:09 +0000
  • List-id: Xen developer discussion <xen-devel.lists.xen.org>
  • Thread-index: AQHRmwvdAjcIoEVjxUKMJSKitOQAsg==
  • Thread-topic: running a task (thread) directly on hardware

In linux kernel we can use affinity settings to ask scheduler for directly 
running the special thread on special cpu or taskset for special command, I 
have a question that: is it possible in Xen for having such a mechanism? I mean 
is there any hypercall or something similar (I don't have any idea what can it 
be) for which we can ask it to run a program's thread on the cpu? (maybe by 
activating some interrupts which asks  xen scheduler to stop it's work and 
start running the thread which is called by a hypercall).

if i want ask my question in more general way, is there any way for user space 
programs to directly access xen?
i found a discussion here: 
http://xen-devel.narkive.com/tZaT5OaG/using-xen-s-hypercall-interface which i 
think is near what i search for, but is there any more detail about playing 
with xen hypercall layer?

Thanks in advance.

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