K 10
svn:author
V 6
rstone
K 8
svn:date
V 27
2015-03-01T00:40:19.768761Z
K 7
svn:log
V 609
Emulate the Device ID and Vendor ID registers for VFs

The SR-IOV standard requires VFs to read all-ones when the VID
and DID registers are read.  The VMM (hypervisor) is required to
emulate them instead.  Make pci_read_config() do this emulation.

Change pci_user.c to use pci_read_config() to read config space
registers instead of going directly to the pcib so that the
emulated VID/DID registers work correctly on VFs.  This is
required both for pciconf and bhyve PCI passthrough.

Differential Revision:	https://reviews.freebsd.org/D77
Reviewed by:		jhb
MFC after: 		1 month
Sponsored by:		Sandvine Inc.

END