[tip:x86/asm] x86/vsdo: Fix build on PARAVIRT_CLOCK=y, KVM_GUEST= n

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Commit-ID:  8705d603edd49f1cff165cd3b7998f4c7f098d27
Gitweb:     http://git.kernel.org/tip/8705d603edd49f1cff165cd3b7998f4c7f098d27
Author:     Andy Lutomirski <luto@xxxxxxxxxx>
AuthorDate: Tue, 29 Dec 2015 20:12:18 -0800
Committer:  Thomas Gleixner <tglx@xxxxxxxxxxxxx>
CommitDate: Wed, 6 Jan 2016 10:49:53 +0100

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@xxxxxxxxxx>
Tested-by: Borislav Petkov <bp@xxxxxxxxx>
Cc: Oleg Nesterov <oleg@xxxxxxxxxx>
Cc: Kees Cook <keescook@xxxxxxxxxxxx>
Link: http://lkml.kernel.org/r/444d38a9bcba832685740ea1401b569861d09a72.1451446564.git.luto@xxxxxxxxxx
Signed-off-by: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
---
 arch/x86/include/asm/pvclock.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/x86/include/asm/pvclock.h b/arch/x86/include/asm/pvclock.h
index 66df22b..fdcc040 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)
--
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