x86, modpost: Replace last remnants of RETPOLINE with CONFIG_RETPOLINE

commit e4f358916d528d479c3c12bd2fd03f2d5a576380 upstream.

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@ucloud.cn>
Signed-off-by: Borislav Petkov <bp@suse.de>
Reviewed-by: Zhenzhong Duan <zhenzhong.duan@oracle.com>
Reviewed-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Andy Lutomirski <luto@kernel.org>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Daniel Borkmann <daniel@iogearbox.net>
Cc: David Woodhouse <dwmw@amazon.co.uk>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Jessica Yu <jeyu@kernel.org>
Cc: Jiri Kosina <jkosina@suse.cz>
Cc: Kees Cook <keescook@chromium.org>
Cc: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Cc: Luc Van Oostenryck <luc.vanoostenryck@gmail.com>
Cc: Michal Marek <michal.lkml@markovi.net>
Cc: Miguel Ojeda <miguel.ojeda.sandonis@gmail.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Tim Chen <tim.c.chen@linux.intel.com>
Cc: Vasily Gorbik <gor@linux.ibm.com>
Cc: linux-kbuild@vger.kernel.org
Cc: srinivas.eeda@oracle.com
Cc: stable <stable@vger.kernel.org>
Cc: x86-ml <x86@kernel.org>
Link: https://lkml.kernel.org/r/20181210163725.95977-1-chao.wang@ucloud.cn
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/arch/x86/kernel/cpu/bugs.c b/arch/x86/kernel/cpu/bugs.c
index 98b24d668b08ae32e31302b9b2f907005af3ea58..004e60470a77866fee5e7507beea47537f9abd74 100644 (file)
--- a/arch/x86/kernel/cpu/bugs.c
+++ b/arch/x86/kernel/cpu/bugs.c
@@ -212,7 +212,7 @@ 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 c11032b06d68f0781aa43f52d02b2c0537d36ede..00b06d7efb830ea453dbe35a62fb8c71c98bc4fc 100644 (file)
--- a/include/linux/compiler-gcc.h
+++ b/include/linux/compiler-gcc.h
@@ -108,7 +108,7 @@
 #define __weak         __attribute__((weak))
 #define __alias(symbol)        __attribute__((alias(#symbol)))
 
-#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 b1cc541f2ddf230972259b619f90bf3a8f4668fc..a9d546c5b9aaa5ade0dca96ea74c44dfdf306da6 100644 (file)
--- a/include/linux/module.h
+++ b/include/linux/module.h
@@ -794,7 +794,7 @@ 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 957f6041dd79ea2c9d0bf4cc48a665ff4b98db9a..18bc8738e989a7aee862ece72216b553600e14c8 100644 (file)
--- a/scripts/mod/modpost.c
+++ b/scripts/mod/modpost.c
@@ -2168,7 +2168,7 @@ 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");
 }