1 files changed, 17 insertions, 0 deletions

diff --git a/tools/lib/traceevent/plugin_kvm.c b/tools/lib/traceevent/plugin_kvm.c
index be9d9c6a49e6..a0e282c6b967 100644
--- a/tools/lib/traceevent/plugin_kvm.c
+++ b/tools/lib/traceevent/plugin_kvm.c
@@ -389,6 +389,16 @@ static int kvm_mmu_get_page_handler(struct trace_seq *s,
         return kvm_mmu_print_role(s, record, event, context);
 }
 
+#define PT_WRITABLE_SHIFT 1
+#define PT_WRITABLE_MASK (1ULL << PT_WRITABLE_SHIFT)
+
+static unsigned long long
+process_is_writable_pte(struct trace_seq *s, unsigned long long *args)
+{
+        unsigned long pte = args[0];
+        return pte & PT_WRITABLE_MASK;
+}
+
 int PEVENT_PLUGIN_LOADER(struct pevent *pevent)
 {
         init_disassembler();
@@ -415,5 +425,12 @@ int PEVENT_PLUGIN_LOADER(struct pevent *pevent)
         pevent_register_event_handler(pevent, -1, "kvmmmu",
                         "kvm_mmu_prepare_zap_page", kvm_mmu_print_role,
                         NULL);
+
+        pevent_register_print_function(pevent,
+                                       process_is_writable_pte,
+                                       PEVENT_FUNC_ARG_INT,
+                                       "is_writable_pte",
+                                       PEVENT_FUNC_ARG_LONG,
+                                       PEVENT_FUNC_ARG_VOID);
         return 0;
 }