#define kern_addr_valid(addr) \
(test_bit(__pa((unsigned long)(addr))>>22, sparc64_valid_addr_bitmap))
+extern int page_in_phys_avail(unsigned long paddr);
+
extern int io_remap_pfn_range(struct vm_area_struct *vma, unsigned long from,
unsigned long pfn,
unsigned long size, pgprot_t prot);