x86/umip: Print a line in the boot log that UMIP has been enabled

Indicate that this feature has been enabled.

Suggested-by: Ingo Molnar <[email protected]>
Signed-off-by: Ricardo Neri <[email protected]>
Cc: Andy Lutomirski <[email protected]>
Cc: Borislav Petkov <[email protected]>
Cc: Linus Torvalds <[email protected]>
Cc: Paolo Bonzini <[email protected]>
Cc: Peter Zijlstra <[email protected]>
Cc: Ravi V. Shankar <[email protected]>
Cc: Thomas Gleixner <[email protected]>
Cc: Tony Luck <[email protected]>
Cc: [email protected]
Link: http://lkml.kernel.org/r/1510640985-18412-3-git-send-email-ricardo.neri-calderon@linux.intel.com
[ Changelog tweaks. ]
Signed-off-by: Ingo Molnar <[email protected]>

arch/x86/kernel/cpu/common.c

@@ -341,6 +341,8 @@ static __always_inline void setup_umip(struct cpuinfo_x86 *c)
 
 	cr4_set_bits(X86_CR4_UMIP);
 
+	pr_info("x86/cpu: Activated the Intel User Mode Instruction Prevention (UMIP) CPU feature\n");
+
 	return;
 
 out: