tag 30f966492c4cd3b1677ca243f58680bd471a5736
tagger Alex Williamson <alex.williamson@redhat.com> Tue Jul 31 08:18:16 2012 -0600
object 89e1f7d4c66d85f42c3d52ea3866eb10cadf6153

VFIO for v3.6

commit 89e1f7d4c66d85f42c3d52ea3866eb10cadf6153
author Alex Williamson <alex.williamson@redhat.com> Tue Jul 31 08:16:24 2012 -0600
committer Alex Williamson <alex.williamson@redhat.com> Tue Jul 31 08:16:24 2012 -0600
tree 6bea54ae5eaea48c17d309855d36d801259b64d1
parent 73fa0d10d077d9521ee2dace2307ae2c9a965336

vfio: Add PCI device driver

Add PCI device support for VFIO.  PCI devices expose regions
for accessing config space, I/O port space, and MMIO areas
of the device.  PCI config access is virtualized in the kernel,
allowing us to ensure the integrity of the system, by preventing
various accesses while reducing duplicate support across various
userspace drivers.  I/O port supports read/write access while
MMIO also supports mmap of sufficiently sized regions.  Support
for INTx, MSI, and MSI-X interrupts are provided using eventfds to
userspace.

Signed-off-by: Alex Williamson <alex.williamson@redhat.com>