There is a warning while building kernel with
CONFIG_MEMORY_HOTPLUG=y && CONFIG_MEMORY_HOTREMOVE=n:
arch/x86/mm/init_64.c:1024: warning:kernel_physical_mapping_remove defined but not used
So move kernel_physical_mapping_remove() into "#ifdef CONFIG_MEMORY_HOTREMOVE" block
Signed-off-by: Jianguo Wu <wujianguo@xxxxxxxxxx>
---
arch/x86/mm/init_64.c | 2 +-
1 files changed, 1 insertions(+), 1 deletions(-)
diff --git a/arch/x86/mm/init_64.c b/arch/x86/mm/init_64.c
index 474e28f..dafdeb2 100644
--- a/arch/x86/mm/init_64.c
+++ b/arch/x86/mm/init_64.c
@@ -1019,6 +1019,7 @@ void __ref vmemmap_free(struct page *memmap, unsigned long nr_pages)
remove_pagetable(start, end, false);
}
+#ifdef CONFIG_MEMORY_HOTREMOVE
static void __meminit
kernel_physical_mapping_remove(unsigned long start, unsigned long end)
{
@@ -1028,7 +1029,6 @@ kernel_physical_mapping_remove(unsigned long start, unsigned long end)
remove_pagetable(start, end, true);
}
-#ifdef CONFIG_MEMORY_HOTREMOVE
int __ref arch_remove_memory(u64 start, u64 size)
{
unsigned long start_pfn = start >> PAGE_SHIFT;
--
1.7.6.1
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