x86/time: fix check for negative time in __update_vcpu_system_time()

Clang points out that u64 stime variable is always >= 0.

Signed-off-by: Tim Deegan <tim@xen.org>

diff --git a/xen/arch/x86/time.c b/xen/arch/x86/time.c
index f047cb3074601b3ed231a533702542bfeac775c3..c31029cb27806f72fbf4d9c66620a8700024471f 100644 (file)
--- a/xen/arch/x86/time.c
+++ b/xen/arch/x86/time.c
@@ -817,7 +817,8 @@ static void __update_vcpu_system_time(struct vcpu *v, int force)
 
     if ( d->arch.vtsc )
     {
-        u64 stime = t->stime_local_stamp;
+        s_time_t stime = t->stime_local_stamp;
+
         if ( is_hvm_domain(d) )
         {
             struct pl_time *pl = &v->domain->arch.hvm_domain.pl_time;