tools/misc/xen-vmtrace: use reset and enable

The expected behavior while using xen-vmtrace is to get a clean start, even if
the tool was used previously on the same VM.

Signed-off-by: Tamas K Lengyel <tamas@tklengyel.com>
Release-Acked-by: Ian Jackson <iwj@xenproject.org>
Reviewed-by: Ian Jackson <iwj@xenproject.org>

tools/misc/xen-vmtrace.c

@@ -119,7 +119,7 @@ int main(int argc, char **argv)
         goto out;
     }
 
-    if ( xc_vmtrace_enable(xch, domid, vcpu) )
+    if ( xc_vmtrace_reset_and_enable(xch, domid, vcpu) )
     {
         perror("xc_vmtrace_enable()");
         goto out;