From: Thomas Gleixner <tglx@linutronix.de>
Date: Sun, 26 Apr 2020 16:55:15 +0000 (+0200)
Subject: x86/cpu: Export native_write_cr4() only when CONFIG_LKTDM=m
X-Git-Tag: v5.8-rc1~134^2~1
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=21953ee5013d6632bee90ec89f2df59c69050db0;p=thirdparty%2Fkernel%2Flinux.git

x86/cpu: Export native_write_cr4() only when CONFIG_LKTDM=m

Modules have no business poking into this but fixing this is for later.

 [ bp: Carve out from an earlier patch. ]

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Borislav Petkov <bp@suse.de>
Link: https://lkml.kernel.org/r/20200421092558.939985695@linutronix.de
---

diff --git a/arch/x86/kernel/cpu/common.c b/arch/x86/kernel/cpu/common.c
index 82042f40fc45a..eab3ebd22927e 100644
--- a/arch/x86/kernel/cpu/common.c
+++ b/arch/x86/kernel/cpu/common.c
@@ -387,7 +387,9 @@ set_register:
 			  bits_missing);
 	}
 }
+#if IS_MODULE(CONFIG_LKDTM)
 EXPORT_SYMBOL_GPL(native_write_cr4);
+#endif
 
 void cr4_update_irqsoff(unsigned long set, unsigned long clear)
 {