tree 64da15c892104735332bc1fe2783579aac7f3793
parent b7e5ffe5d83fa40d702976d77452004abbe35791
author David Vrabel <david.vrabel@citrix.com> 1336138186 +0100
committer Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> 1336407381 -0400

xen/pci: don't use PCI BIOS service for configuration space accesses

The accessing PCI configuration space with the PCI BIOS32 service does
not work in PV guests.

On systems without MMCONFIG or where the BIOS hasn't marked the
MMCONFIG region as reserved in the e820 map, the BIOS service is
probed (even though direct access is preferred) and this hangs.

CC: stable@kernel.org
Acked-by: Jan Beulich <jbeulich@suse.com>
Signed-off-by: David Vrabel <david.vrabel@citrix.com>
[v1: Fixed compile error when CONFIG_PCI is not set]
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>