tree 941cd81f5141e33369ead449debbbb8d0a31c573
parent 998250e976613decf9e0da68b3922df330eac3f6
author Tiejun Chen <tiejun.chen@intel.com> 1436938670 +0800
committer Stefano Stabellini <stefano.stabellini@eu.citrix.com> 1441886669 +0000

xen, gfx passthrough: add opregion mapping

The OpRegion shouldn't be mapped 1:1 because the address in the host
can't be used in the guest directly.

This patch traps read and write access to the opregion of the Intel
GPU config space (offset 0xfc).

The original patch is from Jean Guyader <jean.guyader@eu.citrix.com>

Signed-off-by: Tiejun Chen <tiejun.chen@intel.com>
Signed-off-by: Yang Zhang <yang.z.zhang@Intel.com>
Acked-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>