From: Fangrui Song maskray@google.com
stable inclusion from linux-4.19.207 commit fa4468a122f243dd0ae89721b7f13f064fbae8d6
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commit 968339fad422a58312f67718691b717dac45c399 upstream.
.globl sets the symbol binding to STB_GLOBAL while .weak sets the binding to STB_WEAK. GNU as let .weak override .globl since binutils-gdb 5ca547dc2399a0a5d9f20626d4bf5547c3ccfddd (1996). Clang integrated assembler let the last win but it may error in the future.
Since it is a convention that only one binding directive is used, just delete .globl.
Fixes: ee9d21b3b358 ("powerpc/boot: Ensure _zimage_start is a weak symbol") Signed-off-by: Fangrui Song maskray@google.com Signed-off-by: Michael Ellerman mpe@ellerman.id.au Link: https://lore.kernel.org/r/20200325164257.170229-1-maskray@google.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org Signed-off-by: Yang Yingliang yangyingliang@huawei.com --- arch/powerpc/boot/crt0.S | 3 --- 1 file changed, 3 deletions(-)
diff --git a/arch/powerpc/boot/crt0.S b/arch/powerpc/boot/crt0.S index 9b9d17437373b..0247b8e6cb1b7 100644 --- a/arch/powerpc/boot/crt0.S +++ b/arch/powerpc/boot/crt0.S @@ -49,9 +49,6 @@ p_end: .long _end p_pstack: .long _platform_stack_top #endif
- .globl _zimage_start - /* Clang appears to require the .weak directive to be after the symbol - * is defined. See https://bugs.llvm.org/show_bug.cgi?id=38921 */ .weak _zimage_start _zimage_start: .globl _zimage_start_lib