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authorAlex Nixon <alex.nixon@citrix.com>2009-02-09 12:05:46 -0800
committerKonrad Rzeszutek Wilk <konrad.wilk@oracle.com>2010-06-07 15:37:53 -0400
commit08bbc9da92f7e44b9c208c6a1adba70c403b255e (patch)
tree75c6cf9422e03990d1fd280b631d00ea4d4dbe4b /mm/vmalloc.c
parent19001c8c5bfa032ed45b10dfe48e355f5df88c61 (diff)
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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>
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