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linux-next/include/xen/page.h
David Vrabel 28e98c2c20 xen: add page_to_mfn()
pfn_to_mfn(page_to_pfn(p)) is a common use case so add a generic
helper for it.

Signed-off-by: David Vrabel <david.vrabel@citrix.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-01-14 00:22:00 -05:00

24 lines
450 B
C

#ifndef _XEN_PAGE_H
#define _XEN_PAGE_H
#include <asm/xen/page.h>
static inline unsigned long page_to_mfn(struct page *page)
{
return pfn_to_mfn(page_to_pfn(page));
}
struct xen_memory_region {
phys_addr_t start;
phys_addr_t size;
};
#define XEN_EXTRA_MEM_MAX_REGIONS 128 /* == E820MAX */
extern __initdata
struct xen_memory_region xen_extra_mem[XEN_EXTRA_MEM_MAX_REGIONS];
extern unsigned long xen_released_pages;
#endif /* _XEN_PAGE_H */