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[Xen-devel] Hypercall by DomU Application
| To: | xen-devel@xxxxxxxxxxxxxxxxxxx |
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| Subject: | [Xen-devel] Hypercall by DomU Application |
| From: | Srujan Kotikela <ksrujandas@xxxxxxxxx> |
| Date: | Tue, 25 Oct 2011 20:16:47 -0500 |
| Delivery-date: | Tue, 25 Oct 2011 18:17:53 -0700 |
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Hi, I am working on a security architecture. In this architecture, the application in DomU has to communicate directly with the hypervisor. But as I can see, the xen architecture allows only DomU kernel to raise a hypercall. I am planning to enable application to communicate with xen directly. I am assuming, setting up a trap gate with Ring-3 access should do the trick. I have few questions regarding this.
Is my idea feasible? ==> ( _set_gate(idt_table+HYPERCALL_VECTOR, 15, 3, &hypercall); ) Are there any security/performance/functional implications with this approach?
Thanks and regards, SDK.
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