To be used by KVM PTP driver.

Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>

---
 arch/x86/include/asm/kvmclock.h |    6 ++++++
 arch/x86/kernel/kvmclock.c      |    3 ++-
 2 files changed, 8 insertions(+), 1 deletion(-)

v2: export kvmclock clocksource structure directly (Paolo)

Index: kvm-ptpdriver/arch/x86/include/asm/kvmclock.h
===================================================================
--- /dev/null	1970-01-01 00:00:00.000000000 +0000
+++ kvm-ptpdriver/arch/x86/include/asm/kvmclock.h	2017-01-20 11:05:28.720038512 -0200
@@ -0,0 +1,6 @@
+#ifndef _ASM_X86_KVM_CLOCK_H
+#define _ASM_X86_KVM_CLOCK_H
+
+extern struct clocksource kvm_clock;
+
+#endif /* _ASM_X86_KVM_CLOCK_H */
Index: kvm-ptpdriver/arch/x86/kernel/kvmclock.c
===================================================================
--- kvm-ptpdriver.orig/arch/x86/kernel/kvmclock.c	2017-01-20 10:03:44.750489955 -0200
+++ kvm-ptpdriver/arch/x86/kernel/kvmclock.c	2017-01-20 11:05:03.137971637 -0200
@@ -28,6 +28,7 @@
 
 #include <asm/x86_init.h>
 #include <asm/reboot.h>
+#include <asm/kvmclock.h>
 
 static int kvmclock __ro_after_init = 1;
 static int msr_kvm_system_time = MSR_KVM_SYSTEM_TIME;
@@ -174,7 +175,7 @@
 	return ret;
 }
 
-static struct clocksource kvm_clock = {
+struct clocksource kvm_clock = {
 	.name = "kvm-clock",
 	.read = kvm_clock_get_cycles,
 	.rating = 400,