x86: move e820_mark_nosave_regions to e820.c

and make e820_mark_nosave_regions to take limit_pfn to use max_low_pfn
for 32bit and end_pfn for 64bit

Signed-off-by: Yinghai Lu <yhlu.kernel@gmail.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>

1 files changed, 9 insertions, 0 deletions

diff --git a/include/asm-x86/e820.h b/include/asm-x86/e820.h
index 5a58e2bb1d78..4266a2c5f2e8 100644
--- a/include/asm-x86/e820.h
+++ b/include/asm-x86/e820.h
@@ -70,6 +70,15 @@ extern u64 update_memory_range(u64 start, u64 size, unsigned old_type,
 extern void update_e820(void);
 extern void e820_setup_gap(void);
 
+#if defined(CONFIG_X86_64) || \
+        (defined(CONFIG_X86_32) && defined(CONFIG_HIBERNATION))
+extern void e820_mark_nosave_regions(unsigned long limit_pfn);
+#else
+static inline void e820_mark_nosave_regions(unsigned long limit_pfn)
+{
+}
+#endif
+
 extern u64 find_e820_area(u64 start, u64 end, u64 size, u64 align);
 extern u64 find_e820_area_size(u64 start, u64 *sizep, u64 align);
 extern void reserve_early(u64 start, u64 end, char *name);