From: Andy Lutomirski <luto@kernel.org>
Date: Wed, 30 Dec 2015 04:12:18 +0000 (-0800)
Subject: x86/vsdo: Fix build on PARAVIRT_CLOCK=y, KVM_GUEST=n
X-Git-Tag: v4.5-rc1~167^2
X-Git-Url: https://asedeno.scripts.mit.edu/gitweb/?a=commitdiff_plain;h=8705d603edd49f1cff165cd3b7998f4c7f098d27;p=linux.git

x86/vsdo: Fix build on PARAVIRT_CLOCK=y, KVM_GUEST=n

arch/x86/built-in.o: In function `arch_setup_additional_pages':
 (.text+0x587): undefined reference to `pvclock_pvti_cpu0_va'

KVM_GUEST selects PARAVIRT_CLOCK, so we can make pvclock_pvti_cpu0_va depend
on KVM_GUEST.

Signed-off-by: Andy Lutomirski <luto@kernel.org>
Tested-by: Borislav Petkov <bp@alien8.de>
Cc: Oleg Nesterov <oleg@redhat.com>
Cc: Kees Cook <keescook@chromium.org>
Link: http://lkml.kernel.org/r/444d38a9bcba832685740ea1401b569861d09a72.1451446564.git.luto@kernel.org
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
---

diff --git a/arch/x86/include/asm/pvclock.h b/arch/x86/include/asm/pvclock.h
index 66df22b2e0c9..fdcc04020636 100644
--- a/arch/x86/include/asm/pvclock.h
+++ b/arch/x86/include/asm/pvclock.h
@@ -4,7 +4,7 @@
 #include <linux/clocksource.h>
 #include <asm/pvclock-abi.h>
 
-#ifdef CONFIG_PARAVIRT_CLOCK
+#ifdef CONFIG_KVM_GUEST
 extern struct pvclock_vsyscall_time_info *pvclock_pvti_cpu0_va(void);
 #else
 static inline struct pvclock_vsyscall_time_info *pvclock_pvti_cpu0_va(void)