[PATCH] x86_64: clobber flags in clear_page()

[Alexey Dobriyan]

All clear_page() implementations use XOR which resets flags.

Judging by allyesconfig disassembly no code is affected.

Signed-off-by: Alexey Dobriyan <adobri...@gmail.com>
---

 arch/x86/include/asm/page_64.h |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/arch/x86/include/asm/page_64.h
+++ b/arch/x86/include/asm/page_64.h
@@ -47,7 +47,7 @@ static inline void clear_page(void *page)
                           clear_page_erms, X86_FEATURE_ERMS,
                           "=D" (page),
                           "0" (page)
-                          : "memory", "rax", "rcx");
+                          : "cc", "memory", "rax", "rcx");
 }
 
 void copy_page(void *to, void *from);