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[Xen-devel] HVM hypercalls
| To: | xen-devel@xxxxxxxxxxxxxxxxxxx |
|---|---|
| Subject: | [Xen-devel] HVM hypercalls |
| From: | Ruslan Nikolaev <nruslan_devel@xxxxxxxxx> |
| Date: | Wed, 28 Jul 2010 12:22:39 -0700 (PDT) |
| Delivery-date: | Wed, 28 Jul 2010 12:23:14 -0700 |
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Hi
I need to use hypercalls from HVM domain (e.g. HYPERVISOR_add_to_physmap).
However, it does not work when I am trying to invoke it from HVM Linux guest.
Basically, I don't see that anything happens on hypervisor's side. I also
grep'ed the guest code for 'vmmcall'/'vmcall' and did not find anything. Is it
possible to do it at all? Is it possible to make hypercalls from HVM domains or
are they simply used for tools responsible to load HVM domain? Also, are they
allowed (if allowed at all) from stubdom, ioemu, or both configurations?
I am using latest Xen version (xen-4.0.1-rc). I also tried both official Linux
distribution as an HVM domain and the version from Xen repositary. The computer
has Nehalem processor with VMX.
Thanks,
Ruslan.
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