[PATCH] ppc64: Remove physbase from the lmb_property struct

We no longer need the lmb code to know about abs and phys addresses, so
remove the physbase variable from the lmb_property struct.

Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>

arch/ppc64/kernel/lmb.c

@@ -37,8 +37,6 @@ void lmb_dump_all(void)
 	for (i=0; i < lmb.memory.cnt ;i++) {
 		udbg_printf("    memory.region[0x%x].base       = 0x%lx\n",
 			    i, lmb.memory.region[i].base);
-		udbg_printf("		      .physbase = 0x%lx\n",
-			    lmb.memory.region[i].physbase);
 		udbg_printf("		      .size     = 0x%lx\n",
 			    lmb.memory.region[i].size);
 	}
@@ -50,8 +48,6 @@ void lmb_dump_all(void)
 	for (i=0; i < lmb.reserved.cnt ;i++) {
 		udbg_printf("    reserved.region[0x%x].base       = 0x%lx\n",
 			    i, lmb.reserved.region[i].base);
-		udbg_printf("		      .physbase = 0x%lx\n",
-			    lmb.reserved.region[i].physbase);
 		udbg_printf("		      .size     = 0x%lx\n",
 			    lmb.reserved.region[i].size);
 	}
@@ -97,7 +93,6 @@ lmb_coalesce_regions(struct lmb_region *rgn, unsigned long r1, unsigned long r2)
 	rgn->region[r1].size += rgn->region[r2].size;
 	for (i=r2; i < rgn->cnt-1; i++) {
 		rgn->region[i].base = rgn->region[i+1].base;
-		rgn->region[i].physbase = rgn->region[i+1].physbase;
 		rgn->region[i].size = rgn->region[i+1].size;
 	}
 	rgn->cnt--;
@@ -127,21 +122,12 @@ lmb_analyze(void)
 	unsigned long i;
 	unsigned long mem_size = 0;
 	unsigned long size_mask = 0;
-#ifdef CONFIG_MSCHUNKS
-	unsigned long physbase = 0;
-#endif
 
 	for (i=0; i < lmb.memory.cnt; i++) {
 		unsigned long lmb_size;
 
 		lmb_size = lmb.memory.region[i].size;
 
-#ifdef CONFIG_MSCHUNKS
-		lmb.memory.region[i].physbase = physbase;
-		physbase += lmb_size;
-#else
-		lmb.memory.region[i].physbase = lmb.memory.region[i].base;
-#endif
 		mem_size += lmb_size;
 		size_mask |= lmb_size;
 	}
@@ -164,7 +150,6 @@ lmb_add_region(struct lmb_region *rgn, unsigned long base, unsigned long size)
 		adjacent = lmb_addrs_adjacent(base,size,rgnbase,rgnsize);
 		if ( adjacent > 0 ) {
 			rgn->region[i].base -= size;
-			rgn->region[i].physbase -= size;
 			rgn->region[i].size += size;
 			coalesced++;
 			break;
@@ -191,11 +176,9 @@ lmb_add_region(struct lmb_region *rgn, unsigned long base, unsigned long size)
 	for (i=rgn->cnt-1; i >= 0; i--) {
 		if (base < rgn->region[i].base) {
 			rgn->region[i+1].base = rgn->region[i].base;
-			rgn->region[i+1].physbase = rgn->region[i].physbase;
 			rgn->region[i+1].size = rgn->region[i].size;
 		}  else {
 			rgn->region[i+1].base = base;
-			rgn->region[i+1].physbase = lmb_abs_to_phys(base);
 			rgn->region[i+1].size = size;
 			break;
 		}
@@ -304,13 +287,7 @@ lmb_end_of_DRAM(void)
 {
 	int idx = lmb.memory.cnt - 1;
 
-#ifdef CONFIG_MSCHUNKS
-	return (lmb.memory.region[idx].physbase + lmb.memory.region[idx].size);
-#else
 	return (lmb.memory.region[idx].base + lmb.memory.region[idx].size);
-#endif /* CONFIG_MSCHUNKS */
-
-	return 0;
 }
 
 /*

arch/ppc64/mm/hash_utils.c

@@ -210,7 +210,7 @@ void __init htab_initialize(void)
 
 	/* create bolted the linear mapping in the hash table */
 	for (i=0; i < lmb.memory.cnt; i++) {
-		base = lmb.memory.region[i].physbase + KERNELBASE;
+		base = lmb.memory.region[i].base + KERNELBASE;
 		size = lmb.memory.region[i].size;
 
 		DBG("creating mapping for region: %lx : %lx\n", base, size);

arch/ppc64/mm/init.c

@@ -482,9 +482,9 @@ void __init mm_init_ppc64(void)
 	for (i = 1; i < lmb.memory.cnt; i++) {
 		unsigned long base, prevbase, prevsize;
 
-		prevbase = lmb.memory.region[i-1].physbase;
+		prevbase = lmb.memory.region[i-1].base;
 		prevsize = lmb.memory.region[i-1].size;
-		base = lmb.memory.region[i].physbase;
+		base = lmb.memory.region[i].base;
 		if (base > (prevbase + prevsize)) {
 			io_hole_start = prevbase + prevsize;
 			io_hole_size = base  - (prevbase + prevsize);
@@ -511,11 +511,8 @@ int page_is_ram(unsigned long pfn)
 	for (i=0; i < lmb.memory.cnt; i++) {
 		unsigned long base;
 
-#ifdef CONFIG_MSCHUNKS
-		base = lmb.memory.region[i].physbase;
-#else
 		base = lmb.memory.region[i].base;
-#endif
+
 		if ((paddr >= base) &&
 			(paddr < (base + lmb.memory.region[i].size))) {
 			return 1;
@@ -556,25 +553,25 @@ void __init do_init_bootmem(void)
 	 * present.
 	 */
 	for (i=0; i < lmb.memory.cnt; i++) {
-		unsigned long physbase, size;
+		unsigned long base, size;
 		unsigned long start_pfn, end_pfn;
 
-		physbase = lmb.memory.region[i].physbase;
+		base = lmb.memory.region[i].base;
 		size = lmb.memory.region[i].size;
 
-		start_pfn = physbase >> PAGE_SHIFT;
+		start_pfn = base >> PAGE_SHIFT;
 		end_pfn = start_pfn + (size >> PAGE_SHIFT);
 		memory_present(0, start_pfn, end_pfn);
 
-		free_bootmem(physbase, size);
+		free_bootmem(base, size);
 	}
 
 	/* reserve the sections we're already using */
 	for (i=0; i < lmb.reserved.cnt; i++) {
-		unsigned long physbase = lmb.reserved.region[i].physbase;
+		unsigned long base = lmb.reserved.region[i].base;
 		unsigned long size = lmb.reserved.region[i].size;
 
-		reserve_bootmem(physbase, size);
+		reserve_bootmem(base, size);
 	}
 }
 
@@ -613,10 +610,10 @@ static int __init setup_kcore(void)
 	int i;
 
 	for (i=0; i < lmb.memory.cnt; i++) {
-		unsigned long physbase, size;
+		unsigned long base, size;
 		struct kcore_list *kcore_mem;
 
-		physbase = lmb.memory.region[i].physbase;
+		base = lmb.memory.region[i].base;
 		size = lmb.memory.region[i].size;
 
 		/* GFP_ATOMIC to avoid might_sleep warnings during boot */
@@ -624,7 +621,7 @@ static int __init setup_kcore(void)
 		if (!kcore_mem)
 			panic("mem_init: kmalloc failed\n");
 
-		kclist_add(kcore_mem, __va(physbase), size);
+		kclist_add(kcore_mem, __va(base), size);
 	}
 
 	kclist_add(&kcore_vmem, (void *)VMALLOC_START, VMALLOC_END-VMALLOC_START);

arch/ppc64/mm/numa.c

@@ -671,7 +671,7 @@ new_range:
 		 * Mark reserved regions on this node
 		 */
 		for (i = 0; i < lmb.reserved.cnt; i++) {
-			unsigned long physbase = lmb.reserved.region[i].physbase;
+			unsigned long physbase = lmb.reserved.region[i].base;
 			unsigned long size = lmb.reserved.region[i].size;
 
 			if (pa_to_nid(physbase) != nid &&

include/asm-ppc64/lmb.h

@@ -22,7 +22,6 @@
 
 struct lmb_property {
 	unsigned long base;
-	unsigned long physbase;
 	unsigned long size;
 };