diff --git a/tests/ptimer-test.c b/tests/ptimer-test.c
index bb49670..a69e759 100644
--- a/tests/ptimer-test.c
+++ b/tests/ptimer-test.c
@@ -99,6 +99,7 @@ static void check_oneshot(gconstpointer arg)
     const uint8_t *policy = arg;
     QEMUBH *bh = qemu_bh_new(ptimer_trigger, NULL);
     ptimer_state *ptimer = ptimer_init(bh, *policy);
+    bool no_round_down = (*policy & PTIMER_POLICY_NO_COUNTER_ROUND_DOWN);
 
     triggered = false;
 
@@ -108,32 +109,44 @@ static void check_oneshot(gconstpointer arg)
 
     qemu_clock_step(2000000 * 2 + 100000);
 
-    g_assert_cmpuint(ptimer_get_count(ptimer), ==, 7);
+    g_assert_cmpuint(ptimer_get_count(ptimer), ==, no_round_down ? 8 : 7);
     g_assert_false(triggered);
 
     ptimer_stop(ptimer);
 
-    g_assert_cmpuint(ptimer_get_count(ptimer), ==, 7);
+    g_assert_cmpuint(ptimer_get_count(ptimer), ==, no_round_down ? 8 : 7);
     g_assert_false(triggered);
 
     qemu_clock_step(2000000 * 11);
 
-    g_assert_cmpuint(ptimer_get_count(ptimer), ==, 7);
+    g_assert_cmpuint(ptimer_get_count(ptimer), ==, no_round_down ? 8 : 7);
     g_assert_false(triggered);
 
     ptimer_run(ptimer, 1);
 
     qemu_clock_step(2000000 * 7 + 100000);
 
-    g_assert_cmpuint(ptimer_get_count(ptimer), ==, 0);
-    g_assert_true(triggered);
+    g_assert_cmpuint(ptimer_get_count(ptimer), ==, no_round_down ? 1 : 0);
 
-    triggered = false;
+    if (no_round_down) {
+        g_assert_false(triggered);
+    } else {
+        g_assert_true(triggered);
+
+        triggered = false;
+    }
 
     qemu_clock_step(2000000);
 
     g_assert_cmpuint(ptimer_get_count(ptimer), ==, 0);
-    g_assert_false(triggered);
+
+    if (no_round_down) {
+        g_assert_true(triggered);
+
+        triggered = false;
+    } else {
+        g_assert_false(triggered);
+    }
 
     qemu_clock_step(4000000);
 
@@ -158,14 +171,14 @@ static void check_oneshot(gconstpointer arg)
 
     qemu_clock_step(2000000 + 100000);
 
-    g_assert_cmpuint(ptimer_get_count(ptimer), ==, 7);
+    g_assert_cmpuint(ptimer_get_count(ptimer), ==, no_round_down ? 8 : 7);
     g_assert_false(triggered);
 
     ptimer_set_count(ptimer, 20);
 
     qemu_clock_step(2000000 * 19 + 100000);
 
-    g_assert_cmpuint(ptimer_get_count(ptimer), ==, 0);
+    g_assert_cmpuint(ptimer_get_count(ptimer), ==, no_round_down ? 1 : 0);
     g_assert_false(triggered);
 
     qemu_clock_step(2000000);
@@ -192,6 +205,7 @@ static void check_periodic(gconstpointer arg)
     bool no_immediate_trigger = (*policy & PTIMER_POLICY_NO_IMMEDIATE_TRIGGER);
     bool no_immediate_reload = (*policy & PTIMER_POLICY_NO_IMMEDIATE_RELOAD);
     bool continuous_trigger = (*policy & PTIMER_POLICY_CONTINUOUS_TRIGGER);
+    bool no_round_down = (*policy & PTIMER_POLICY_NO_COUNTER_ROUND_DOWN);
 
     triggered = false;
 
@@ -201,26 +215,29 @@ static void check_periodic(gconstpointer arg)
 
     qemu_clock_step(2000000 * 10 + 100000);
 
-    g_assert_cmpuint(ptimer_get_count(ptimer), ==, wrap_policy ? 10 : 9);
+    g_assert_cmpuint(ptimer_get_count(ptimer), ==,
+            wrap_policy ? (no_round_down ? 0 : 10) : (no_round_down ? 10 : 9));
     g_assert_true(triggered);
 
     triggered = false;
 
     qemu_clock_step(2000000);
 
-    g_assert_cmpuint(ptimer_get_count(ptimer), ==, wrap_policy ? 9 : 8);
+    g_assert_cmpuint(ptimer_get_count(ptimer), ==,
+                     (no_round_down ? 1 : 0) + (wrap_policy ? 9 : 8));
     g_assert_false(triggered);
 
     ptimer_set_count(ptimer, 20);
 
     qemu_clock_step(2000000 * 11 + 100000);
 
-    g_assert_cmpuint(ptimer_get_count(ptimer), ==, 8);
+    g_assert_cmpuint(ptimer_get_count(ptimer), ==, no_round_down ? 9 : 8);
     g_assert_false(triggered);
 
     qemu_clock_step(2000000 * 10);
 
-    g_assert_cmpuint(ptimer_get_count(ptimer), ==, wrap_policy ? 9 : 8);
+    g_assert_cmpuint(ptimer_get_count(ptimer), ==,
+                     (no_round_down ? 1 : 0) + (wrap_policy ? 9 : 8));
     g_assert_true(triggered);
 
     ptimer_stop(ptimer);
@@ -228,7 +245,8 @@ static void check_periodic(gconstpointer arg)
 
     qemu_clock_step(2000000);
 
-    g_assert_cmpuint(ptimer_get_count(ptimer), ==, wrap_policy ? 9 : 8);
+    g_assert_cmpuint(ptimer_get_count(ptimer), ==,
+                     (no_round_down ? 1 : 0) + (wrap_policy ? 9 : 8));
     g_assert_false(triggered);
 
     ptimer_set_count(ptimer, 3);
@@ -236,18 +254,21 @@ static void check_periodic(gconstpointer arg)
 
     qemu_clock_step(2000000 * 3 + 100000);
 
-    g_assert_cmpuint(ptimer_get_count(ptimer), ==, wrap_policy ? 10 : 9);
+    g_assert_cmpuint(ptimer_get_count(ptimer), ==,
+            wrap_policy ? (no_round_down ? 0 : 10) : (no_round_down ? 10 : 9));
     g_assert_true(triggered);
 
     triggered = false;
 
     qemu_clock_step(2000000);
 
-    g_assert_cmpuint(ptimer_get_count(ptimer), ==, wrap_policy ? 9 : 8);
+    g_assert_cmpuint(ptimer_get_count(ptimer), ==,
+                     (no_round_down ? 1 : 0) + (wrap_policy ? 9 : 8));
     g_assert_false(triggered);
 
     ptimer_set_count(ptimer, 0);
-    g_assert_cmpuint(ptimer_get_count(ptimer), ==, no_immediate_reload ? 0 : 10);
+    g_assert_cmpuint(ptimer_get_count(ptimer), ==,
+                     no_immediate_reload ? 0 : 10);
 
     if (no_immediate_trigger) {
         g_assert_false(triggered);
@@ -266,7 +287,9 @@ static void check_periodic(gconstpointer arg)
     }
 
     g_assert_cmpuint(ptimer_get_count(ptimer), ==,
-                    7 + (wrap_policy ? 1 : 0) + (no_immediate_reload ? 1 : 0));
+                    (no_immediate_reload ? 8 : 7) +
+                    (no_round_down ? 1 : 0) +
+                    (wrap_policy ? 1 : 0));
     g_assert_true(triggered);
 
     ptimer_stop(ptimer);
@@ -276,7 +299,9 @@ static void check_periodic(gconstpointer arg)
     qemu_clock_step(2000000 * 12 + 100000);
 
     g_assert_cmpuint(ptimer_get_count(ptimer), ==,
-                    7 + (wrap_policy ? 1 : 0) + (no_immediate_reload ? 1 : 0));
+                    (no_immediate_reload ? 8 : 7) +
+                    (no_round_down ? 1 : 0) +
+                    (wrap_policy ? 1 : 0));
     g_assert_false(triggered);
 
     ptimer_run(ptimer, 0);
@@ -285,7 +310,9 @@ static void check_periodic(gconstpointer arg)
     qemu_clock_step(2000000 + 100000);
 
     g_assert_cmpuint(ptimer_get_count(ptimer), ==,
-                    7 + (wrap_policy ? 1 : 0) + (no_immediate_reload ? 1 : 0));
+                    (no_immediate_reload ? 8 : 7) +
+                    (no_round_down ? 1 : 0) +
+                    (wrap_policy ? 1 : 0));
     g_assert_false(triggered);
 }
 
@@ -295,6 +322,7 @@ static void check_on_the_fly_mode_change(gconstpointer arg)
     QEMUBH *bh = qemu_bh_new(ptimer_trigger, NULL);
     ptimer_state *ptimer = ptimer_init(bh, *policy);
     bool wrap_policy = (*policy & PTIMER_POLICY_WRAP_AFTER_ONE_PERIOD);
+    bool no_round_down = (*policy & PTIMER_POLICY_NO_COUNTER_ROUND_DOWN);
 
     triggered = false;
 
@@ -306,12 +334,13 @@ static void check_on_the_fly_mode_change(gconstpointer arg)
 
     ptimer_run(ptimer, 0);
 
-    g_assert_cmpuint(ptimer_get_count(ptimer), ==, 0);
+    g_assert_cmpuint(ptimer_get_count(ptimer), ==, no_round_down ? 1 : 0);
     g_assert_false(triggered);
 
     qemu_clock_step(2000000);
 
-    g_assert_cmpuint(ptimer_get_count(ptimer), ==, wrap_policy ? 10 : 9);
+    g_assert_cmpuint(ptimer_get_count(ptimer), ==,
+            wrap_policy ? (no_round_down ? 0 : 10) : (no_round_down ? 10 : 9));
     g_assert_true(triggered);
 
     triggered = false;
@@ -320,7 +349,8 @@ static void check_on_the_fly_mode_change(gconstpointer arg)
 
     ptimer_run(ptimer, 1);
 
-    g_assert_cmpuint(ptimer_get_count(ptimer), ==, wrap_policy ? 1 : 0);
+    g_assert_cmpuint(ptimer_get_count(ptimer), ==,
+                     (no_round_down ? 1 : 0) + (wrap_policy ? 1 : 0));
     g_assert_false(triggered);
 
     qemu_clock_step(2000000 * 3);
@@ -334,6 +364,7 @@ static void check_on_the_fly_period_change(gconstpointer arg)
     const uint8_t *policy = arg;
     QEMUBH *bh = qemu_bh_new(ptimer_trigger, NULL);
     ptimer_state *ptimer = ptimer_init(bh, *policy);
+    bool no_round_down = (*policy & PTIMER_POLICY_NO_COUNTER_ROUND_DOWN);
 
     triggered = false;
 
@@ -343,15 +374,15 @@ static void check_on_the_fly_period_change(gconstpointer arg)
 
     qemu_clock_step(2000000 * 4 + 100000);
 
-    g_assert_cmpuint(ptimer_get_count(ptimer), ==, 3);
+    g_assert_cmpuint(ptimer_get_count(ptimer), ==, no_round_down ? 4 : 3);
     g_assert_false(triggered);
 
     ptimer_set_period(ptimer, 4000000);
-    g_assert_cmpuint(ptimer_get_count(ptimer), ==, 3);
+    g_assert_cmpuint(ptimer_get_count(ptimer), ==, no_round_down ? 4 : 3);
 
     qemu_clock_step(4000000 * 2 + 100000);
 
-    g_assert_cmpuint(ptimer_get_count(ptimer), ==, 0);
+    g_assert_cmpuint(ptimer_get_count(ptimer), ==, no_round_down ? 2 : 0);
     g_assert_false(triggered);
 
     qemu_clock_step(4000000 * 2);
@@ -365,6 +396,7 @@ static void check_on_the_fly_freq_change(gconstpointer arg)
     const uint8_t *policy = arg;
     QEMUBH *bh = qemu_bh_new(ptimer_trigger, NULL);
     ptimer_state *ptimer = ptimer_init(bh, *policy);
+    bool no_round_down = (*policy & PTIMER_POLICY_NO_COUNTER_ROUND_DOWN);
 
     triggered = false;
 
@@ -374,15 +406,15 @@ static void check_on_the_fly_freq_change(gconstpointer arg)
 
     qemu_clock_step(2000000 * 4 + 100000);
 
-    g_assert_cmpuint(ptimer_get_count(ptimer), ==, 3);
+    g_assert_cmpuint(ptimer_get_count(ptimer), ==, no_round_down ? 4 : 3);
     g_assert_false(triggered);
 
     ptimer_set_freq(ptimer, 250);
-    g_assert_cmpuint(ptimer_get_count(ptimer), ==, 3);
+    g_assert_cmpuint(ptimer_get_count(ptimer), ==, no_round_down ? 4 : 3);
 
     qemu_clock_step(2000000 * 4 + 100000);
 
-    g_assert_cmpuint(ptimer_get_count(ptimer), ==, 0);
+    g_assert_cmpuint(ptimer_get_count(ptimer), ==, no_round_down ? 2 : 0);
     g_assert_false(triggered);
 
     qemu_clock_step(2000000 * 4);
@@ -417,13 +449,15 @@ static void check_run_with_delta_0(gconstpointer arg)
     bool no_immediate_trigger = (*policy & PTIMER_POLICY_NO_IMMEDIATE_TRIGGER);
     bool no_immediate_reload = (*policy & PTIMER_POLICY_NO_IMMEDIATE_RELOAD);
     bool continuous_trigger = (*policy & PTIMER_POLICY_CONTINUOUS_TRIGGER);
+    bool no_round_down = (*policy & PTIMER_POLICY_NO_COUNTER_ROUND_DOWN);
 
     triggered = false;
 
     ptimer_set_period(ptimer, 2000000);
     ptimer_set_limit(ptimer, 99, 0);
     ptimer_run(ptimer, 1);
-    g_assert_cmpuint(ptimer_get_count(ptimer), ==, no_immediate_reload ? 0 : 99);
+    g_assert_cmpuint(ptimer_get_count(ptimer), ==,
+                     no_immediate_reload ? 0 : 99);
 
     if (no_immediate_trigger) {
         g_assert_false(triggered);
@@ -440,12 +474,12 @@ static void check_run_with_delta_0(gconstpointer arg)
 
     qemu_clock_step(2000000 + 100000);
 
-    g_assert_cmpuint(ptimer_get_count(ptimer), ==, 97);
+    g_assert_cmpuint(ptimer_get_count(ptimer), ==, no_round_down ? 98 : 97);
     g_assert_false(triggered);
 
     qemu_clock_step(2000000 * 97);
 
-    g_assert_cmpuint(ptimer_get_count(ptimer), ==, 0);
+    g_assert_cmpuint(ptimer_get_count(ptimer), ==, no_round_down ? 1 : 0);
     g_assert_false(triggered);
 
     qemu_clock_step(2000000 * 2);
@@ -457,7 +491,8 @@ static void check_run_with_delta_0(gconstpointer arg)
 
     ptimer_set_count(ptimer, 0);
     ptimer_run(ptimer, 0);
-    g_assert_cmpuint(ptimer_get_count(ptimer), ==, no_immediate_reload ? 0 : 99);
+    g_assert_cmpuint(ptimer_get_count(ptimer), ==,
+                     no_immediate_reload ? 0 : 99);
 
     if (no_immediate_trigger) {
         g_assert_false(triggered);
@@ -471,7 +506,8 @@ static void check_run_with_delta_0(gconstpointer arg)
         qemu_clock_step(2000000 + 100000);
 
         if (continuous_trigger || no_immediate_trigger) {
-            g_assert_cmpuint(ptimer_get_count(ptimer), ==, 98);
+            g_assert_cmpuint(ptimer_get_count(ptimer), ==,
+                             no_round_down ? 99 : 98);
             g_assert_true(triggered);
 
             triggered = false;
@@ -484,12 +520,13 @@ static void check_run_with_delta_0(gconstpointer arg)
 
     qemu_clock_step(2000000 + 100000);
 
-    g_assert_cmpuint(ptimer_get_count(ptimer), ==, 97);
+    g_assert_cmpuint(ptimer_get_count(ptimer), ==, no_round_down ? 98 : 97);
     g_assert_false(triggered);
 
     qemu_clock_step(2000000 * 98);
 
-    g_assert_cmpuint(ptimer_get_count(ptimer), ==, wrap_policy ? 99 : 98);
+    g_assert_cmpuint(ptimer_get_count(ptimer), ==,
+            wrap_policy ? (no_round_down ? 0 : 99) : (no_round_down ? 99 : 98));
     g_assert_true(triggered);
 
     ptimer_stop(ptimer);
@@ -603,6 +640,10 @@ static void add_ptimer_tests(uint8_t policy)
         g_strlcat(policy_name, "no_immediate_reload,", 256);
     }
 
+    if (policy & PTIMER_POLICY_NO_COUNTER_ROUND_DOWN) {
+        g_strlcat(policy_name, "no_counter_rounddown,", 256);
+    }
+
     qtest_add_data_func(
         g_strdup_printf("/ptimer/set_count policy=%s", policy_name),
         ppolicy, check_set_count);
@@ -650,7 +691,7 @@ static void add_ptimer_tests(uint8_t policy)
 
 static void add_all_ptimer_policies_comb_tests(void)
 {
-    int last_policy = PTIMER_POLICY_NO_IMMEDIATE_RELOAD;
+    int last_policy = PTIMER_POLICY_NO_COUNTER_ROUND_DOWN;
     int policy = PTIMER_POLICY_DEFAULT;
 
     for (; policy < (last_policy << 1); policy++) {
