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-rw-r--r--arch/mips/mm/mmap.c6
1 files changed, 6 insertions, 0 deletions
diff --git a/arch/mips/mm/mmap.c b/arch/mips/mm/mmap.c
index d9be7540a6be..7e5fe2790d8a 100644
--- a/arch/mips/mm/mmap.c
+++ b/arch/mips/mm/mmap.c
@@ -192,3 +192,9 @@ unsigned long arch_randomize_brk(struct mm_struct *mm)
192 192
193 return ret; 193 return ret;
194} 194}
195
196int __virt_addr_valid(const volatile void *kaddr)
197{
198 return pfn_valid(PFN_DOWN(virt_to_phys(kaddr)));
199}
200EXPORT_SYMBOL_GPL(__virt_addr_valid);