Open 2.0 development tree

[qemu.git] / cpus.c

diff --git a/cpus.c b/cpus.c
index 398229ecbde9e64d43e1192867cedf81edf569f8..01d128d7aff71d98b6acf195a7ada6b69d2d5a35 100644 (file)
--- a/cpus.c
+++ b/cpus.c
@@ -165,36 +165,38 @@ int64_t cpu_get_icount(void)
 /* Caller must hold the BQL */
 int64_t cpu_get_ticks(void)
 {
+    int64_t ticks;
+
     if (use_icount) {
         return cpu_get_icount();
     }
-    if (!timers_state.cpu_ticks_enabled) {
-        return timers_state.cpu_ticks_offset;
-    } else {
-        int64_t ticks;
-        ticks = cpu_get_real_ticks();
-        if (timers_state.cpu_ticks_prev > ticks) {
-            /* Note: non increasing ticks may happen if the host uses
-               software suspend */
-            timers_state.cpu_ticks_offset += timers_state.cpu_ticks_prev - ticks;
-        }
-        timers_state.cpu_ticks_prev = ticks;
-        return ticks + timers_state.cpu_ticks_offset;
+
+    ticks = timers_state.cpu_ticks_offset;
+    if (timers_state.cpu_ticks_enabled) {
+        ticks += cpu_get_real_ticks();
+    }
+
+    if (timers_state.cpu_ticks_prev > ticks) {
+        /* Note: non increasing ticks may happen if the host uses
+           software suspend */
+        timers_state.cpu_ticks_offset += timers_state.cpu_ticks_prev - ticks;
+        ticks = timers_state.cpu_ticks_prev;
     }
+
+    timers_state.cpu_ticks_prev = ticks;
+    return ticks;
 }
 
 static int64_t cpu_get_clock_locked(void)
 {
-    int64_t ti;
+    int64_t ticks;
 
-    if (!timers_state.cpu_ticks_enabled) {
-        ti = timers_state.cpu_clock_offset;
-    } else {
-        ti = get_clock();
-        ti += timers_state.cpu_clock_offset;
+    ticks = timers_state.cpu_clock_offset;
+    if (timers_state.cpu_ticks_enabled) {
+        ticks += get_clock();
     }
 
-    return ti;
+    return ticks;
 }
 
 /* return the host CPU monotonic timer and handle stop/restart */
@@ -235,7 +237,7 @@ void cpu_disable_ticks(void)
     /* Here, the really thing protected by seqlock is cpu_clock_offset. */
     seqlock_write_lock(&timers_state.vm_clock_seqlock);
     if (timers_state.cpu_ticks_enabled) {
-        timers_state.cpu_ticks_offset = cpu_get_ticks();
+        timers_state.cpu_ticks_offset += cpu_get_real_ticks();
         timers_state.cpu_clock_offset = cpu_get_clock_locked();
         timers_state.cpu_ticks_enabled = 0;
     }
@@ -1403,7 +1405,10 @@ void qmp_memsave(int64_t addr, int64_t size, const char *filename,
         l = sizeof(buf);
         if (l > size)
             l = size;
-        cpu_memory_rw_debug(cpu, addr, buf, l, 0);
+        if (cpu_memory_rw_debug(cpu, addr, buf, l, 0) != 0) {
+            error_setg(errp, "Invalid addr 0x%016" PRIx64 "specified", addr);
+            goto exit;
+        }
         if (fwrite(buf, 1, l, f) != l) {
             error_set(errp, QERR_IO_ERROR);
             goto exit;