[Xen-devel] What is via in HVM_CALLBACK_VECTOR part?

[Yuming Wu <yumingwu233@xxxxxxxxx>]

Hi,

I am learning event channel implementation in xen and evtchn driver in linux. 

When PVHVM guest boot, it will set callback vector using function void xen_callback_vector(void)

which will call xen_set_callback_via()

The logic itself is simple but I don't know what the 'via' stands for. Would you please kindly tell me the full name of 'via'? 

Thanks

--

Yuming Wu

Institute of Parallel and Distributed Systems (IPADS),

Shanghai Jiao Tong University

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