From cd34206e949b66d3c5fa3e4d2905aa4af29d1b85 Mon Sep 17 00:00:00 2001 From: Nishanth Aravamudan Date: Tue, 26 Oct 2010 17:35:12 +0000 Subject: powerpc: Add memory_hotplug_max() Add a function to get the maximum address that can be hotplug added. This is needed to calculate the size of the tce table needed to cover all memory in 1:1 mode. Signed-off-by: Milton Miller Signed-off-by: Nishanth Aravamudan Signed-off-by: Benjamin Herrenschmidt --- arch/powerpc/include/asm/mmzone.h | 5 +++++ 1 file changed, 5 insertions(+) (limited to 'arch/powerpc/include/asm') diff --git a/arch/powerpc/include/asm/mmzone.h b/arch/powerpc/include/asm/mmzone.h index aac87cbceb57..fd3fd58bad84 100644 --- a/arch/powerpc/include/asm/mmzone.h +++ b/arch/powerpc/include/asm/mmzone.h @@ -33,6 +33,9 @@ extern int numa_cpu_lookup_table[]; extern cpumask_var_t node_to_cpumask_map[]; #ifdef CONFIG_MEMORY_HOTPLUG extern unsigned long max_pfn; +u64 memory_hotplug_max(void); +#else +#define memory_hotplug_max() memblock_end_of_DRAM() #endif /* @@ -42,6 +45,8 @@ extern unsigned long max_pfn; #define node_start_pfn(nid) (NODE_DATA(nid)->node_start_pfn) #define node_end_pfn(nid) (NODE_DATA(nid)->node_end_pfn) +#else +#define memory_hotplug_max() memblock_end_of_DRAM() #endif /* CONFIG_NEED_MULTIPLE_NODES */ #endif /* __KERNEL__ */ -- cgit v1.2.3