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-rw-r--r--qapi/misc.json3
-rw-r--r--vl.c10
2 files changed, 7 insertions, 6 deletions
diff --git a/qapi/misc.json b/qapi/misc.json
index 3a68af9ca3..c85c6c8ca3 100644
--- a/qapi/misc.json
+++ b/qapi/misc.json
@@ -3070,7 +3070,8 @@
 # Emitted when the guest changes the RTC time.
 #
 # @offset: offset between base RTC clock (as specified by -rtc base), and
-#          new RTC clock value
+#          new RTC clock value. Note that value will be different depending
+#          on clock chosen to drive RTC (specified by -rtc clock).
 #
 # Note: This event is rate-limited.
 #
diff --git a/vl.c b/vl.c
index 5bb53f7204..c5fffa349b 100644
--- a/vl.c
+++ b/vl.c
@@ -789,10 +789,10 @@ void qemu_system_vmstop_request(RunState state)
 
 /***********************************************************/
 /* RTC reference time/date access */
-static time_t qemu_ref_timedate(void)
+static time_t qemu_ref_timedate(QEMUClockType clock)
 {
-    time_t value = qemu_clock_get_ms(rtc_clock) / 1000;
-    switch (rtc_clock) {
+    time_t value = qemu_clock_get_ms(clock) / 1000;
+    switch (clock) {
     case QEMU_CLOCK_REALTIME:
         value -= rtc_realtime_clock_offset;
         /* no break */
@@ -812,7 +812,7 @@ static time_t qemu_ref_timedate(void)
 
 void qemu_get_timedate(struct tm *tm, int offset)
 {
-    time_t ti = qemu_ref_timedate();
+    time_t ti = qemu_ref_timedate(rtc_clock);
 
     ti += offset;
 
@@ -847,7 +847,7 @@ int qemu_timedate_diff(struct tm *tm)
         abort();
     }
 
-    return seconds - qemu_ref_timedate();
+    return seconds - qemu_ref_timedate(QEMU_CLOCK_HOST);
 }
 
 static void configure_rtc_base_datetime(const char *startdate)