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[Xen-devel] one question on the PCI ioport base address for hvm domain in hvmloader.c


  • To: <xen-devel@xxxxxxxxxxxxxxxxxxx>
  • From: "Jiang, Yunhong" <yunhong.jiang@xxxxxxxxx>
  • Date: Mon, 7 Jan 2008 19:47:54 +0800
  • Delivery-date: Mon, 07 Jan 2008 03:58:27 -0800
  • List-id: Xen developer discussion <xen-devel.lists.xensource.com>
  • Thread-index: AchRIyN5yzpWwbISTzG5mnNZ0UT+Sw==
  • Thread-topic: one question on the PCI ioport base address for hvm domain in hvmloader.c

I'm considering to make guest IO port address same as physical one for
passthrough hvm domain. However,  in hvmloader.c's pci_setup(), the
io_base is hardcoded as 0xc000, are there any special reason for this
value? (I checked and seems it comes from original qemu's code)

Can anyone give me some hints on it?

Thanks
-- Yunhong Jiang

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