1 files changed, 6 insertions, 0 deletions

diff --git a/arch/x86/lib/usercopy_64.c b/arch/x86/lib/usercopy_64.c
index f42d2fd86ca3..75d3776123cc 100644
--- a/arch/x86/lib/usercopy_64.c
+++ b/arch/x86/lib/usercopy_64.c
@@ -97,6 +97,12 @@ static void clean_cache_range(void *addr, size_t size)
                 clwb(p);
 }
 
+void arch_wb_cache_pmem(void *addr, size_t size)
+{
+        clean_cache_range(addr, size);
+}
+EXPORT_SYMBOL_GPL(arch_wb_cache_pmem);
+
 long __copy_user_flushcache(void *dst, const void __user *src, unsigned size)
 {
         unsigned long flushed, dest = (unsigned long) dst;