2 /* Copyright 2002,2003 by Andi Kleen, SuSE Labs */
3 /* 2.5 Version loosely based on the NUMAQ Code by Pat Gaughen. */
4 #ifndef ASM_X86__MMZONE_64_H
5 #define ASM_X86__MMZONE_64_H
10 #include <linux/mmdebug.h>
14 /* Simple perfect hash to map physical addresses to node numbers */
19 s16 embedded_map[64 - 8];
20 } ____cacheline_aligned; /* total size = 128 bytes */
21 extern struct memnode memnode;
22 #define memnode_shift memnode.shift
23 #define memnodemap memnode.map
24 #define memnodemapsize memnode.mapsize
26 extern struct pglist_data *node_data[];
28 static inline __attribute__((pure)) int phys_to_nid(unsigned long addr)
31 VIRTUAL_BUG_ON(!memnodemap);
32 nid = memnodemap[addr >> memnode_shift];
33 VIRTUAL_BUG_ON(nid >= MAX_NUMNODES || !node_data[nid]);
37 #define NODE_DATA(nid) (node_data[nid])
39 #define node_start_pfn(nid) (NODE_DATA(nid)->node_start_pfn)
40 #define node_end_pfn(nid) (NODE_DATA(nid)->node_start_pfn + \
41 NODE_DATA(nid)->node_spanned_pages)
43 extern int early_pfn_to_nid(unsigned long pfn);
45 #ifdef CONFIG_NUMA_EMU
46 #define FAKE_NODE_MIN_SIZE (64 * 1024 * 1024)
47 #define FAKE_NODE_MIN_HASH_MASK (~(FAKE_NODE_MIN_SIZE - 1UL))
51 #endif /* ASM_X86__MMZONE_64_H */