linux-kernel - [RFC PATCH v4 24/37] arm64: ftrace: Skip validation of entry-ftrace.o

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Date:   Fri, 29 Apr 2022 17:43:42 +0800
From:   Chen Zhongjin <chenzhongjin@...wei.com>
To:     <linux-kernel@...r.kernel.org>,
        <linux-arm-kernel@...ts.infradead.org>,
        <linux-arch@...r.kernel.org>
CC:     <jthierry@...hat.com>, <catalin.marinas@....com>,
        <will@...nel.org>, <masahiroy@...nel.org>, <jpoimboe@...hat.com>,
        <peterz@...radead.org>, <ycote@...hat.com>,
        <herbert@...dor.apana.org.au>, <mark.rutland@....com>,
        <davem@...emloft.net>, <ardb@...nel.org>, <maz@...nel.org>,
        <tglx@...utronix.de>, <luc.vanoostenryck@...il.com>,
        <chenzhongjin@...wei.com>
Subject: [RFC PATCH v4 24/37] arm64: ftrace: Skip validation of entry-ftrace.o

Skip objtool validation of ftrace entry because it doesn't follow
standard calling ABI.

Signed-off-by: Chen Zhongjin <chenzhongjin@...wei.com>
---
 arch/arm64/kernel/Makefile | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/arch/arm64/kernel/Makefile b/arch/arm64/kernel/Makefile
index eee5eb7d782b..51fd3d45986f 100644
--- a/arch/arm64/kernel/Makefile
+++ b/arch/arm64/kernel/Makefile
@@ -47,6 +47,10 @@ obj-$(CONFIG_KUSER_HELPERS)		+= kuser32.o
 
 OBJECT_FILES_NON_STANDARD_kuser32.o := y
 
+ifdef CONFIG_FRAME_POINTER
+OBJECT_FILES_NON_STANDARD_entry-ftrace.o := y
+endif
+
 obj-$(CONFIG_FUNCTION_TRACER)		+= ftrace.o entry-ftrace.o
 obj-$(CONFIG_MODULES)			+= module.o
 obj-$(CONFIG_ARM64_MODULE_PLTS)		+= module-plts.o
-- 
2.17.1