[27/35] core: move early_res

Commit Message

Yinghai Lu Feb. 14, 2010, 8:46 p.m. UTC

None

Patch

Index: linux-2.6/arch/x86/kernel/e820.c
===================================================================
--- linux-2.6.orig/arch/x86/kernel/e820.c
+++ linux-2.6/arch/x86/kernel/e820.c
@@ -752,6 +752,15 @@  u64 __init find_fw_memmap_area(u64 start
 {
 	return find_e820_area(start, end, size, align);
 }
+
+u64 __init get_max_mapped(void)
+{
+	u64 end = max_pfn_mapped;
+
+	end <<= PAGE_SHIFT;
+
+	return end;
+}
 /*
  * Find next free range after *start
  */
Index: linux-2.6/include/linux/early_res.h
===================================================================
--- linux-2.6.orig/include/linux/early_res.h
+++ linux-2.6/include/linux/early_res.h
@@ -13,6 +13,7 @@  u64 find_early_area(u64 ei_start, u64 ei
 u64 find_early_area_size(u64 ei_start, u64 ei_last, u64 start,
 			 u64 *sizep, u64 align);
 u64 find_fw_memmap_area(u64 start, u64 end, u64 size, u64 align);
+u64 get_max_mapped(void);
 #include <linux/range.h>
 int get_free_all_memory_range(struct range **rangep, int nodeid);
 
Index: linux-2.6/kernel/early_res.c
===================================================================
--- linux-2.6.orig/kernel/early_res.c
+++ linux-2.6/kernel/early_res.c
@@ -184,6 +184,13 @@  u64 __init __weak find_fw_memmap_area(u6
 	return -1ULL;
 }
 
+u64 __init __weak get_max_mapped(void)
+{
+	panic("should have get_max_mapped defined with arch");
+
+	return -1ULL;
+}
+
 static void __init __check_and_double_early_res(u64 ex_start, u64 ex_end)
 {
 	u64 start, end, size, mem;
@@ -206,7 +213,7 @@  static void __init __check_and_double_ea
 					 sizeof(struct early_res));
 	if (mem == -1ULL) {
 		start = ex_end;
-		end = max_pfn_mapped << PAGE_SHIFT;
+		end = get_max_mapped();
 		if (start + size < end)
 			mem = find_fw_memmap_area(start, end, size,
 						 sizeof(struct early_res));
@@ -342,11 +349,11 @@  int __init get_free_all_memory_range(str
 	count *= 2;
 
 	size = sizeof(struct range) * count;
+	end = get_max_mapped();
 #ifdef MAX_DMA32_PFN
-	if (max_pfn_mapped > MAX_DMA32_PFN)
+	if (end > (MAX_DMA32_PFN << PAGE_SHIFT))
 		start = MAX_DMA32_PFN << PAGE_SHIFT;
 #endif
-	end = max_pfn_mapped << PAGE_SHIFT;
 	mem = find_fw_memmap_area(start, end, size, sizeof(struct range));
 	if (mem == -1ULL)
 		panic("can not find more space for range free");