tree 75c6cf9422e03990d1fd280b631d00ea4d4dbe4b
parent 19001c8c5bfa032ed45b10dfe48e355f5df88c61
author Alex Nixon <alex.nixon@citrix.com> 1234209946 -0800
committer Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> 1275939473 -0400

xen: Add xen_create_contiguous_region

A memory region must be physically contiguous in order to be accessed
through DMA.  This patch adds xen_create_contiguous_region, which
ensures a region of contiguous virtual memory is also physically
contiguous.

Based on Stephen Tweedie's port of the 2.6.18-xen version.

Remove contiguous_bitmap[] as it's no longer needed.

Ported from linux-2.6.18-xen.hg 707:e410857fd83c

[ Impact: add Xen-internal API to make pages phys-contig ]

Signed-off-by: Alex Nixon <alex.nixon@citrix.com>
Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Signed-off-by: Ian Campbell <ian.campbell@citrix.com>
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>