4.9-stable review patch. If anyone has any objections, please let me know.
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From: Nick Desaulniers ndesaulniers@google.com
commit 1f59a4581b5ecfe9b4f049a7a2cf904d8352842d upstream.
This should have been marked extern inline in order to pick up the out of line definition in arch/x86/kernel/irqflags.S.
Fixes: 208cbb325589 ("x86/irqflags: Provide a declaration for native_save_fl") Reported-by: Ben Hutchings ben.hutchings@codethink.co.uk Signed-off-by: Nick Desaulniers ndesaulniers@google.com Signed-off-by: Thomas Gleixner tglx@linutronix.de Reviewed-by: Juergen Gross jgross@suse.com Cc: "H. Peter Anvin" hpa@zytor.com Cc: Boris Ostrovsky boris.ostrovsky@oracle.com Cc: Greg Kroah-Hartman gregkh@linuxfoundation.org Cc: stable@vger.kernel.org Link: https://lkml.kernel.org/r/20180827214011.55428-1-ndesaulniers@google.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org
--- arch/x86/include/asm/irqflags.h | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-)
--- a/arch/x86/include/asm/irqflags.h +++ b/arch/x86/include/asm/irqflags.h @@ -32,7 +32,8 @@ extern inline unsigned long native_save_ return flags; }
-static inline void native_restore_fl(unsigned long flags) +extern inline void native_restore_fl(unsigned long flags); +extern inline void native_restore_fl(unsigned long flags) { asm volatile("push %0 ; popf" : /* no output */