apic_common: improve readability of apic_reset_common

[mirror_qemu.git] / cpus.c

diff --git a/cpus.c b/cpus.c
index 1b5168a1db509804e95a1448f44ac37d32122c01..e6dcae31f5ad0c058195399eac5084c2a12874d1 100644 (file)
--- a/cpus.c
+++ b/cpus.c
@@ -229,23 +229,6 @@ int64_t cpu_get_clock(void)
     return ti;
 }
 
-/* return the offset between the host clock and virtual CPU clock */
-int64_t cpu_get_clock_offset(void)
-{
-    int64_t ti;
-    unsigned start;
-
-    do {
-        start = seqlock_read_begin(&timers_state.vm_clock_seqlock);
-        ti = timers_state.cpu_clock_offset;
-        if (!timers_state.cpu_ticks_enabled) {
-            ti -= get_clock();
-        }
-    } while (seqlock_read_retry(&timers_state.vm_clock_seqlock, start));
-
-    return -ti;
-}
-
 /* enable cpu_get_ticks()
  * Caller must hold BQL which server as mutex for vm_clock_seqlock.
  */
@@ -324,7 +307,7 @@ static void icount_adjust(void)
 static void icount_adjust_rt(void *opaque)
 {
     timer_mod(icount_rt_timer,
-                   qemu_clock_get_ms(QEMU_CLOCK_REALTIME) + 1000);
+              qemu_clock_get_ms(QEMU_CLOCK_VIRTUAL_RT) + 1000);
     icount_adjust();
 }
 
@@ -378,15 +361,19 @@ static void icount_warp_rt(void *opaque)
 void qtest_clock_warp(int64_t dest)
 {
     int64_t clock = qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL);
+    AioContext *aio_context;
     assert(qtest_enabled());
+    aio_context = qemu_get_aio_context();
     while (clock < dest) {
         int64_t deadline = qemu_clock_deadline_ns_all(QEMU_CLOCK_VIRTUAL);
         int64_t warp = qemu_soonest_timeout(dest - clock, deadline);
+
         seqlock_write_lock(&timers_state.vm_clock_seqlock);
         timers_state.qemu_icount_bias += warp;
         seqlock_write_unlock(&timers_state.vm_clock_seqlock);
 
         qemu_clock_run_timers(QEMU_CLOCK_VIRTUAL);
+        timerlist_run_timers(aio_context->tlg.tl[QEMU_CLOCK_VIRTUAL]);
         clock = qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL);
     }
     qemu_clock_notify(QEMU_CLOCK_VIRTUAL);
@@ -791,7 +778,7 @@ static void qemu_tcg_init_cpu_signals(void)
 
 static QemuMutex qemu_global_mutex;
 static QemuCond qemu_io_proceeded_cond;
-static bool iothread_requesting_mutex;
+static unsigned iothread_requesting_mutex;
 
 static QemuThread io_thread;
 
@@ -940,7 +927,6 @@ static void *qemu_kvm_cpu_thread_fn(void *arg)
     qemu_mutex_lock(&qemu_global_mutex);
     qemu_thread_get_self(cpu->thread);
     cpu->thread_id = qemu_get_thread_id();
-    cpu->exception_index = -1;
     cpu->can_do_io = 1;
     current_cpu = cpu;
 
@@ -982,7 +968,6 @@ static void *qemu_dummy_cpu_thread_fn(void *arg)
     qemu_mutex_lock_iothread();
     qemu_thread_get_self(cpu->thread);
     cpu->thread_id = qemu_get_thread_id();
-    cpu->exception_index = -1;
     cpu->can_do_io = 1;
 
     sigemptyset(&waitset);
@@ -1026,7 +1011,6 @@ static void *qemu_tcg_cpu_thread_fn(void *arg)
     CPU_FOREACH(cpu) {
         cpu->thread_id = qemu_get_thread_id();
         cpu->created = true;
-        cpu->exception_index = -1;
         cpu->can_do_io = 1;
     }
     qemu_cond_signal(&qemu_cpu_cond);
@@ -1041,6 +1025,9 @@ static void *qemu_tcg_cpu_thread_fn(void *arg)
         }
     }
 
+    /* process any pending work */
+    exit_request = 1;
+
     while (1) {
         tcg_exec_all();
 
@@ -1124,22 +1111,23 @@ bool qemu_cpu_is_self(CPUState *cpu)
     return qemu_thread_is_self(cpu->thread);
 }
 
-static bool qemu_in_vcpu_thread(void)
+bool qemu_in_vcpu_thread(void)
 {
     return current_cpu && qemu_cpu_is_self(current_cpu);
 }
 
 void qemu_mutex_lock_iothread(void)
 {
-    if (!tcg_enabled()) {
+    atomic_inc(&iothread_requesting_mutex);
+    if (!tcg_enabled() || !first_cpu || !first_cpu->thread) {
         qemu_mutex_lock(&qemu_global_mutex);
+        atomic_dec(&iothread_requesting_mutex);
     } else {
-        iothread_requesting_mutex = true;
         if (qemu_mutex_trylock(&qemu_global_mutex)) {
             qemu_cpu_kick_thread(first_cpu);
             qemu_mutex_lock(&qemu_global_mutex);
         }
-        iothread_requesting_mutex = false;
+        atomic_dec(&iothread_requesting_mutex);
         qemu_cond_broadcast(&qemu_io_proceeded_cond);
     }
 }
@@ -1365,7 +1353,7 @@ static int tcg_cpu_exec(CPUArchState *env)
     }
     ret = cpu_exec(env);
 #ifdef CONFIG_PROFILER
-    qemu_time += profile_getclock() - ti;
+    tcg_time += profile_getclock() - ti;
 #endif
     if (use_icount) {
         /* Fold pending instructions back into the
@@ -1486,6 +1474,7 @@ void qmp_memsave(int64_t addr, int64_t size, const char *filename,
     uint32_t l;
     CPUState *cpu;
     uint8_t buf[1024];
+    int64_t orig_addr = addr, orig_size = size;
 
     if (!has_cpu) {
         cpu_index = 0;
@@ -1509,7 +1498,8 @@ void qmp_memsave(int64_t addr, int64_t size, const char *filename,
         if (l > size)
             l = size;
         if (cpu_memory_rw_debug(cpu, addr, buf, l, 0) != 0) {
-            error_setg(errp, "Invalid addr 0x%016" PRIx64 "specified", addr);
+            error_setg(errp, "Invalid addr 0x%016" PRIx64 "/size %" PRId64
+                             " specified", orig_addr, orig_size);
             goto exit;
         }
         if (fwrite(buf, 1, l, f) != l) {