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-rw-r--r--arch/ia64/mm/init.c16
1 files changed, 16 insertions, 0 deletions
diff --git a/arch/ia64/mm/init.c b/arch/ia64/mm/init.c
index f225dd72968b..c8da621aab17 100644
--- a/arch/ia64/mm/init.c
+++ b/arch/ia64/mm/init.c
@@ -648,6 +648,22 @@ count_reserved_pages (u64 start, u64 end, void *arg)
return 0;
}
+int
+find_max_min_low_pfn (unsigned long start, unsigned long end, void *arg)
+{
+ unsigned long pfn_start, pfn_end;
+#ifdef CONFIG_FLATMEM
+ pfn_start = (PAGE_ALIGN(__pa(start))) >> PAGE_SHIFT;
+ pfn_end = (PAGE_ALIGN(__pa(end - 1))) >> PAGE_SHIFT;
+#else
+ pfn_start = GRANULEROUNDDOWN(__pa(start)) >> PAGE_SHIFT;
+ pfn_end = GRANULEROUNDUP(__pa(end - 1)) >> PAGE_SHIFT;
+#endif
+ min_low_pfn = min(min_low_pfn, pfn_start);
+ max_low_pfn = max(max_low_pfn, pfn_end);
+ return 0;
+}
+
/*
* Boot command-line option "nolwsys" can be used to disable the use of any light-weight
* system call handler. When this option is in effect, all fsyscalls will end up bubbling