linux-kernel - [PATCH 4.14 07/71] Revert "module: Add retpoline tag to VERMAGIC"

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Message-Id: <20180129123827.808894291@linuxfoundation.org>
Date:   Mon, 29 Jan 2018 13:56:35 +0100
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Jiri Kosina <jikos@...nel.org>,
        Andi Kleen <ak@...ux.intel.com>,
        Thomas Gleixner <tglx@...utronix.de>,
        David Woodhouse <dwmw@...zon.co.uk>, rusty@...tcorp.com.au,
        arjan.van.de.ven@...el.com, jeyu@...nel.org,
        Linus Torvalds <torvalds@...ux-foundation.org>
Subject: [PATCH 4.14 07/71] Revert "module: Add retpoline tag to VERMAGIC"

4.14-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

commit 5132ede0fe8092b043dae09a7cc32b8ae7272baa upstream.

This reverts commit 6cfb521ac0d5b97470883ff9b7facae264b7ab12.

Turns out distros do not want to make retpoline as part of their "ABI",
so this patch should not have been merged.  Sorry Andi, this was my
fault, I suggested it when your original patch was the "correct" way of
doing this instead.

Reported-by: Jiri Kosina <jikos@...nel.org>
Fixes: 6cfb521ac0d5 ("module: Add retpoline tag to VERMAGIC")
Acked-by: Andi Kleen <ak@...ux.intel.com>
Cc: Thomas Gleixner <tglx@...utronix.de>
Cc: David Woodhouse <dwmw@...zon.co.uk>
Cc: rusty@...tcorp.com.au
Cc: arjan.van.de.ven@...el.com
Cc: jeyu@...nel.org
Signed-off-by: Linus Torvalds <torvalds@...ux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

---
 include/linux/vermagic.h |    8 +-------
 1 file changed, 1 insertion(+), 7 deletions(-)

--- a/include/linux/vermagic.h
+++ b/include/linux/vermagic.h
@@ -31,17 +31,11 @@
 #else
 #define MODULE_RANDSTRUCT_PLUGIN
 #endif
-#ifdef RETPOLINE
-#define MODULE_VERMAGIC_RETPOLINE "retpoline "
-#else
-#define MODULE_VERMAGIC_RETPOLINE ""
-#endif
 
 #define VERMAGIC_STRING 						\
 	UTS_RELEASE " "							\
 	MODULE_VERMAGIC_SMP MODULE_VERMAGIC_PREEMPT 			\
 	MODULE_VERMAGIC_MODULE_UNLOAD MODULE_VERMAGIC_MODVERSIONS	\
 	MODULE_ARCH_VERMAGIC						\
-	MODULE_RANDSTRUCT_PLUGIN					\
-	MODULE_VERMAGIC_RETPOLINE
+	MODULE_RANDSTRUCT_PLUGIN