linux-kernel - [RFC v5 55/57] arm64: Mark sigreturn32.o as containing non standard code

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Date:   Thu,  9 Jan 2020 16:02:58 +0000
From:   Julien Thierry <jthierry@...hat.com>
To:     linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org
Cc:     jpoimboe@...hat.com, peterz@...radead.org, raphael.gault@....com,
        catalin.marinas@....com, will@...nel.org,
        Julien Thierry <jthierry@...hat.com>
Subject: [RFC v5 55/57] arm64: Mark sigreturn32.o as containing non standard code

sigreturn32.o contains aarch32 getting copied to the VDSO for
compat user tasks.

This code shouldn't get validated by arm64 objtool.

Signed-off-by: Julien Thierry <jthierry@...hat.com>
---
 arch/arm64/kernel/Makefile | 1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/arm64/kernel/Makefile b/arch/arm64/kernel/Makefile
index f5994679db5f..b978026ea368 100644
--- a/arch/arm64/kernel/Makefile
+++ b/arch/arm64/kernel/Makefile
@@ -31,6 +31,7 @@ obj-$(CONFIG_COMPAT)			+= sys32.o signal32.o			\
 					   sys_compat.o
 ifneq ($(CONFIG_COMPAT_VDSO), y)
 obj-$(CONFIG_COMPAT)			+= sigreturn32.o
+OBJECT_FILES_NON_STANDARD_sigreturn32.o := y
 endif
 obj-$(CONFIG_KUSER_HELPERS)		+= kuser32.o
 
-- 
2.21.0