[Xen-devel] [RFC] event channels and xen callbacks

[Mathieu Ropert <mro@xxxxxxxxxx>]

Hi,

i'm currently playing a bit with event channels and hypervisor 
callbacks, and i find myself stuck because i miss some informations. 
Maybe you can give me some hints:
on amd64 arch, i'd like to know about hypervisor callback: ie, stack 
layout when
called by Xen, stack location in memory (is it using the TSS entry as 
hardware  traps do?) and finally, about how HYPERVISOR_iret() expects to 
find the stack upon call (like when you used iret? or something else?).
I may write a little paper or tutorial from i've learned and didn't 
found in Xen doc after i get a better view of the whole thing...
Regards,

Mathieu



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