From: long <tlnguyen@snoqualmie.dp.intel.com>

MSI support for x86_64 is currently disabled in the kernel 2.6.x.  Below is
the patch, which provides a fix and reenable it.

In addition, the patch provides a info message during kernel boot if
configuring vector-base indexing.

Cc: Andi Kleen <ak@muc.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>