1 files changed, 18 insertions, 0 deletions

diff --git a/kernel/up.c b/kernel/up.c
index 1760bf3d1463..ee81ac9af4ca 100644
--- a/kernel/up.c
+++ b/kernel/up.c
@@ -6,6 +6,7 @@
 #include <linux/kernel.h>
 #include <linux/export.h>
 #include <linux/smp.h>
+#include <linux/hypervisor.h>
 
 int smp_call_function_single(int cpu, void (*func) (void *info), void *info,
                                 int wait)
@@ -82,3 +83,20 @@ void on_each_cpu_cond(bool (*cond_func)(int cpu, void *info),
         preempt_enable();
 }
 EXPORT_SYMBOL(on_each_cpu_cond);
+
+int smp_call_on_cpu(unsigned int cpu, int (*func)(void *), void *par, bool phys)
+{
+        int ret;
+
+        if (cpu != 0)
+                return -ENXIO;
+
+        if (phys)
+                hypervisor_pin_vcpu(0);
+        ret = func(par);
+        if (phys)
+                hypervisor_pin_vcpu(-1);
+
+        return ret;
+}
+EXPORT_SYMBOL_GPL(smp_call_on_cpu);