[PATCH 5/5] vfio-pci: Allow to mmap MSI-X table if interrupt remapping is supported

Tian, Kevin kevin.tian at intel.com
Tue May 3 15:34:14 AEST 2016

> From: Yongji Xie
> Sent: Wednesday, April 27, 2016 8:43 PM
> This patch enables mmapping MSI-X tables if hardware supports
> interrupt remapping which can ensure that a given pci device
> can only shoot the MSIs assigned for it.
> With MSI-X table mmapped, we also need to expose the
> read/write interface which will be used to access MSI-X table.
> Signed-off-by: Yongji Xie <xyjxie at linux.vnet.ibm.com>

A curious question here. Does "allow to mmap MSI-X" essentially
mean that KVM guest can directly read/write physical MSI-X
structure then?


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