linux-kernel - [PATCH 16/18] objtool: Add HAVE_NOINSTR

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Message-Id: <94ba30d6e5066fb198f67a477186c89c9cea828e.1649891421.git.jpoimboe@redhat.com>
Date:   Wed, 13 Apr 2022 16:19:51 -0700
From:   Josh Poimboeuf <jpoimboe@...hat.com>
To:     x86@...nel.org
Cc:     Peter Zijlstra <peterz@...radead.org>,
        linux-kernel@...r.kernel.org, Miroslav Benes <mbenes@...e.cz>
Subject: [PATCH 16/18] objtool: Add HAVE_NOINSTR_VALIDATION

Remove CONFIG_NOINSTR_VALIDATION's dependency on HAVE_OBJTOOL, since
other arches might want to implement objtool without it.

Signed-off-by: Josh Poimboeuf <jpoimboe@...hat.com>
---
 arch/Kconfig      | 3 +++
 arch/x86/Kconfig  | 1 +
 lib/Kconfig.debug | 2 +-
 3 files changed, 5 insertions(+), 1 deletion(-)

diff --git a/arch/Kconfig b/arch/Kconfig
index cb5fc88cb996..d0c00564bbf8 100644
--- a/arch/Kconfig
+++ b/arch/Kconfig
@@ -1031,6 +1031,9 @@ config ARCH_WANT_DEFAULT_TOPDOWN_MMAP_LAYOUT
 config HAVE_OBJTOOL
 	bool
 
+config HAVE_NOINSTR_VALIDATION
+	bool
+
 config HAVE_TOOLCHAIN_HACKS
 	bool
 	select OBJTOOL
diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
index 410c4e2c7390..c73ca72f5d98 100644
--- a/arch/x86/Kconfig
+++ b/arch/x86/Kconfig
@@ -231,6 +231,7 @@ config X86
 	select HAVE_MOVE_PMD
 	select HAVE_MOVE_PUD
 	select HAVE_NMI
+	select HAVE_NOINSTR_VALIDATION		if HAVE_OBJTOOL
 	select HAVE_OBJTOOL			if X86_64
 	select HAVE_TOOLCHAIN_HACKS		if HAVE_OBJTOOL
 	select HAVE_OPTPROBES
diff --git a/lib/Kconfig.debug b/lib/Kconfig.debug
index be6ca70d558a..b5fa86994fd3 100644
--- a/lib/Kconfig.debug
+++ b/lib/Kconfig.debug
@@ -502,7 +502,7 @@ config STACK_VALIDATION
 
 config NOINSTR_VALIDATION
 	bool
-	depends on HAVE_OBJTOOL && DEBUG_ENTRY
+	depends on HAVE_NOINSTR_VALIDATION && DEBUG_ENTRY
 	select OBJTOOL
 	default y
 
-- 
2.34.1