virtio: pci cfg access

virtio regions can also be accessed using a window in pci cfg space.
Add support for it.  Enable it in case the virtio regions are mapped
high (above 4g), so direct mmio access doesn't work for us even in
32bit mode.

Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2 files changed
tree: 0e80e7099e3e708abf759e788da7ed2cfc0693d0
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  2. COPYING
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  4. Makefile
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  7. scripts/
  8. src/
  9. vgasrc/