diff options
| author | Nishanth Aravamudan <nacc@us.ibm.com> | 2010-10-26 17:35:12 +0000 |
|---|---|---|
| committer | Benjamin Herrenschmidt <benh@kernel.crashing.org> | 2010-11-29 15:48:21 +1100 |
| commit | cd34206e949b66d3c5fa3e4d2905aa4af29d1b85 (patch) | |
| tree | 361054eb08328d8d9f5ceaba4d8a90ba52244c58 /arch/powerpc/include | |
| parent | f6aedd8606ae673f8e1f4d972fc86c451fbc8ba7 (diff) | |
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 <miltonm@bga.com>
Signed-off-by: Nishanth Aravamudan <nacc@us.ibm.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Diffstat (limited to 'arch/powerpc/include')
| -rw-r--r-- | arch/powerpc/include/asm/mmzone.h | 5 |
1 files changed, 5 insertions, 0 deletions
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__ */ |