diff mbox series

[09/46] static_call, lto: Mark static_call_return0() as __visible

Message ID 20221114114344.18650-10-jirislaby@kernel.org
State New
Headers
Series gcc-LTO support for the kernel |

Commit Message

Jiri Slaby Nov. 14, 2022, 11:43 a.m. UTC 
  From: Andi Kleen <andi@firstfloor.org>

Symbols referenced from assembler (either directly or e.f. from
DEFINE_STATIC_KEY()) need to be global and visible in gcc LTO because
they could end up in a different object file than the assembler. This
can lead to linker errors without this patch.

So mark static_call_return0() as __visible.

Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Josh Poimboeuf <jpoimboe@kernel.org>
Cc: Jason Baron <jbaron@akamai.com>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Ard Biesheuvel <ardb@kernel.org>
Signed-off-by: Andi Kleen <andi@firstfloor.org>
Signed-off-by: Martin Liska <mliska@suse.cz>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
---
 kernel/static_call.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
diff mbox series

Patch

diff --git a/kernel/static_call.c b/kernel/static_call.c
index e9c3e69f3837..9197fe86d8bd 100644
--- a/kernel/static_call.c
+++ b/kernel/static_call.c
@@ -1,7 +1,7 @@ 
 // SPDX-License-Identifier: GPL-2.0
 #include <linux/static_call.h>
 
-long __static_call_return0(void)
+__visible long __static_call_return0(void)
 {
 	return 0;
 }