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[Xen-devel] Interrupt for HVM guests


  • From: Emre Can Sezer <ecsezer@xxxxxxxx>
  • Date: Fri, 05 Jun 2009 14:43:18 -0400
  • Cc: Xen Devel <xen-devel@xxxxxxxxxxxxxxxxxxx>
  • Delivery-date: Fri, 05 Jun 2009 11:43:49 -0700
  • List-id: Xen developer discussion <xen-devel.lists.xensource.com>

I am trying to figure out how an HVM guest is passed an interrupt. Say that a network packet has arrived and the QEMU driver in dom0 has to notify an HVM guest of the packet's arrival. Could someone please give a brief, high-level description of this process? I read the Intel Architectures Software Developer's Guide on VM Execution bits and Virtual interrupts and also some Xenwiki stuff about it but I'm still not sure what's going on. I don't have any device pass-through or stubdom or PV Drivers for my HVM guest. I would also appreciate references to some Xen files/functions related to this process.

Thanks,

John

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