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xen: make xen_create_contiguous_region return the dma address

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Modify xen_create_contiguous_region to return the dma address of the
newly contiguous buffer.

Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
Acked-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Reviewed-by: David Vrabel <david.vrabel@citrix.com>


Changes in v4:
- use virt_to_machine instead of virt_to_bus.
This commit is contained in:
Stefano Stabellini
2013-10-09 16:56:32 +00:00
parent 2f558d4091
commit 69908907b0
3 changed files with 8 additions and 5 deletions
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3
include/xen/xen-ops.h
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@@ -20,7 +20,8 @@ int xen_setup_shutdown_event(void);
extern unsigned long *xen_contiguous_bitmap;
int xen_create_contiguous_region(unsigned long vstart, unsigned int order,
unsigned int address_bits);
unsigned int address_bits,
dma_addr_t *dma_handle);
void xen_destroy_contiguous_region(unsigned long vstart, unsigned int order);