linux-kernel - [tip:x86/urgent] x86, modpost: Replace last remnants of RETPOLINE with CONFIG

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Date:   Wed, 9 Jan 2019 02:04:29 -0800
From:   tip-bot for WANG Chao <tipbot@...or.com>
To:     linux-tip-commits@...r.kernel.org
Cc:     keescook@...omium.org, chao.wang@...oud.cn, jeyu@...nel.org,
        jkosina@...e.cz, hpa@...or.com, luc.vanoostenryck@...il.com,
        zhenzhong.duan@...cle.com, akpm@...ux-foundation.org,
        michal.lkml@...kovi.net, arnd@...db.de, mingo@...nel.org,
        miguel.ojeda.sandonis@...il.com, dwmw@...zon.co.uk, x86@...nel.org,
        luto@...nel.org, ak@...ux.intel.com, yamada.masahiro@...ionext.com,
        tglx@...utronix.de, linux-kernel@...r.kernel.org,
        gor@...ux.ibm.com, bp@...e.de, daniel@...earbox.net,
        tim.c.chen@...ux.intel.com, stable@...r.kernel.org,
        peterz@...radead.org, geert@...ux-m68k.org, konrad.wilk@...cle.com
Subject: [tip:x86/urgent] x86, modpost: Replace last remnants of RETPOLINE
 with CONFIG_RETPOLINE

Commit-ID:  e4f358916d528d479c3c12bd2fd03f2d5a576380
Gitweb:     https://git.kernel.org/tip/e4f358916d528d479c3c12bd2fd03f2d5a576380
Author:     WANG Chao <chao.wang@...oud.cn>
AuthorDate: Tue, 11 Dec 2018 00:37:25 +0800
Committer:  Borislav Petkov <bp@...e.de>
CommitDate: Wed, 9 Jan 2019 10:35:56 +0100

x86, modpost: Replace last remnants of RETPOLINE with CONFIG_RETPOLINE

Commit

  4cd24de3a098 ("x86/retpoline: Make CONFIG_RETPOLINE depend on compiler support")

replaced the RETPOLINE define with CONFIG_RETPOLINE checks. Remove the
remaining pieces.

 [ bp: Massage commit message. ]

Fixes: 4cd24de3a098 ("x86/retpoline: Make CONFIG_RETPOLINE depend on compiler support")
Signed-off-by: WANG Chao <chao.wang@...oud.cn>
Signed-off-by: Borislav Petkov <bp@...e.de>
Reviewed-by: Zhenzhong Duan <zhenzhong.duan@...cle.com>
Reviewed-by: Masahiro Yamada <yamada.masahiro@...ionext.com>
Cc: "H. Peter Anvin" <hpa@...or.com>
Cc: Andi Kleen <ak@...ux.intel.com>
Cc: Andrew Morton <akpm@...ux-foundation.org>
Cc: Andy Lutomirski <luto@...nel.org>
Cc: Arnd Bergmann <arnd@...db.de>
Cc: Daniel Borkmann <daniel@...earbox.net>
Cc: David Woodhouse <dwmw@...zon.co.uk>
Cc: Geert Uytterhoeven <geert@...ux-m68k.org>
Cc: Jessica Yu <jeyu@...nel.org>
Cc: Jiri Kosina <jkosina@...e.cz>
Cc: Kees Cook <keescook@...omium.org>
Cc: Konrad Rzeszutek Wilk <konrad.wilk@...cle.com>
Cc: Luc Van Oostenryck <luc.vanoostenryck@...il.com>
Cc: Michal Marek <michal.lkml@...kovi.net>
Cc: Miguel Ojeda <miguel.ojeda.sandonis@...il.com>
Cc: Peter Zijlstra <peterz@...radead.org>
Cc: Tim Chen <tim.c.chen@...ux.intel.com>
Cc: Vasily Gorbik <gor@...ux.ibm.com>
Cc: linux-kbuild@...r.kernel.org
Cc: srinivas.eeda@...cle.com
Cc: stable <stable@...r.kernel.org>
Cc: x86-ml <x86@...nel.org>
Link: https://lkml.kernel.org/r/20181210163725.95977-1-chao.wang@ucloud.cn
---
 arch/x86/kernel/cpu/bugs.c   | 2 +-
 include/linux/compiler-gcc.h | 2 +-
 include/linux/module.h       | 2 +-
 scripts/mod/modpost.c        | 2 +-
 4 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/arch/x86/kernel/cpu/bugs.c b/arch/x86/kernel/cpu/bugs.c
index 8654b8b0c848..1de0f4170178 100644
--- a/arch/x86/kernel/cpu/bugs.c
+++ b/arch/x86/kernel/cpu/bugs.c
@@ -215,7 +215,7 @@ static enum spectre_v2_mitigation spectre_v2_enabled __ro_after_init =
 static enum spectre_v2_user_mitigation spectre_v2_user __ro_after_init =
 	SPECTRE_V2_USER_NONE;
 
-#ifdef RETPOLINE
+#ifdef CONFIG_RETPOLINE
 static bool spectre_v2_bad_module;
 
 bool retpoline_module_ok(bool has_retpoline)
diff --git a/include/linux/compiler-gcc.h b/include/linux/compiler-gcc.h
index 5776da43da97..dd8268f5f5f0 100644
--- a/include/linux/compiler-gcc.h
+++ b/include/linux/compiler-gcc.h
@@ -68,7 +68,7 @@
  */
 #define uninitialized_var(x) x = x
 
-#ifdef RETPOLINE
+#ifdef CONFIG_RETPOLINE
 #define __noretpoline __attribute__((__indirect_branch__("keep")))
 #endif
 
diff --git a/include/linux/module.h b/include/linux/module.h
index 9a21fe3509af..8fa38d3e7538 100644
--- a/include/linux/module.h
+++ b/include/linux/module.h
@@ -828,7 +828,7 @@ static inline void module_bug_finalize(const Elf_Ehdr *hdr,
 static inline void module_bug_cleanup(struct module *mod) {}
 #endif	/* CONFIG_GENERIC_BUG */
 
-#ifdef RETPOLINE
+#ifdef CONFIG_RETPOLINE
 extern bool retpoline_module_ok(bool has_retpoline);
 #else
 static inline bool retpoline_module_ok(bool has_retpoline)
diff --git a/scripts/mod/modpost.c b/scripts/mod/modpost.c
index 0de2fb236640..26bf886bd168 100644
--- a/scripts/mod/modpost.c
+++ b/scripts/mod/modpost.c
@@ -2185,7 +2185,7 @@ static void add_intree_flag(struct buffer *b, int is_intree)
 /* Cannot check for assembler */
 static void add_retpoline(struct buffer *b)
 {
-	buf_printf(b, "\n#ifdef RETPOLINE\n");
+	buf_printf(b, "\n#ifdef CONFIG_RETPOLINE\n");
 	buf_printf(b, "MODULE_INFO(retpoline, \"Y\");\n");
 	buf_printf(b, "#endif\n");
 }