Merge remote-tracking branch 'remotes/bonzini/tags/for-upstream' into staging

* NBD and chardev conversion to QIONetListener (Daniel)
* MTTCG fixes (David)
* Hyper-V fixes (Roman, Evgeny)
* share-rw option (Fam)
* Mux chardev event bugfix (Marc-André)
* Add systemd unit files in contrib/ (me)
* SCSI and block/iscsi.c bugfixes (me, Peter L.)
* unassigned_mem_ops fixes (Peter M.)
* VEX decoding fix (Peter M.)
* "info pic" and "info irq" improvements (Peter Xu)
* vmport trace events (Philippe)
* Braille chardev bugfix (Samuel)
* Compiler warnings fix (Stefan)
* initial support for TCG smoke test of more boards (Thomas)
* New CPU features (Yang)
* Reduce startup memory usage (Yang)
* QemuThread race fix (linhecheng)

# gpg: Signature made Thu 21 Dec 2017 08:30:49 GMT
# gpg:                using RSA key 0xBFFBD25F78C7AE83
# gpg: Good signature from "Paolo Bonzini <bonzini@gnu.org>"
# gpg:                 aka "Paolo Bonzini <pbonzini@redhat.com>"
# Primary key fingerprint: 46F5 9FBD 57D6 12E7 BFD4  E2F7 7E15 100C CD36 69B1
#      Subkey fingerprint: F133 3857 4B66 2389 866C  7682 BFFB D25F 78C7 AE83

* remotes/bonzini/tags/for-upstream: (41 commits)
  chardev: convert the socket server to QIONetListener
  blockdev: convert qemu-nbd server to QIONetListener
  blockdev: convert internal NBD server to QIONetListener
  test: add some chardev mux event tests
  chardev: fix backend events regression with mux chardev
  rcu: reduce more than 7MB heap memory by malloc_trim()
  checkpatch: volatile with a comment or sig_atomic_t is okay
  i8259: move TYPE_INTERRUPT_STATS_PROVIDER upper
  kvm-i8259: support "info pic" and "info irq"
  i8259: generalize statistics into common code
  i8259: use DEBUG_IRQ_COUNT always
  i8259: convert DPRINTFs into trace
  Remove legacy -no-kvm-pit option
  scsi: replace hex constants with #defines
  scsi: provide general-purpose functions to manage sense data
  hw/i386/vmport: replace fprintf() by trace events or LOG_UNIMP
  hw/mips/boston: Remove workaround for writes to ROM aborting
  exec: Don't reuse unassigned_mem_ops for io_mem_rom
  block/iscsi: only report an iSCSI Failure if we don't handle it gracefully
  block/iscsi: dont leave allocmap in an invalid state on UNMAP failure
  ...

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

1 files changed, 20 insertions, 17 deletions

diff --git a/cpus.c b/cpus.c
index 114c29b6a0..83700c1716 100644
--- a/cpus.c
+++ b/cpus.c
@@ -1057,13 +1057,22 @@ static void qemu_tcg_destroy_vcpu(CPUState *cpu)
 {
 }
 
+static void qemu_cpu_stop(CPUState *cpu, bool exit)
+{
+    g_assert(qemu_cpu_is_self(cpu));
+    cpu->stop = false;
+    cpu->stopped = true;
+    if (exit) {
+        cpu_exit(cpu);
+    }
+    qemu_cond_broadcast(&qemu_pause_cond);
+}
+
 static void qemu_wait_io_event_common(CPUState *cpu)
 {
     atomic_mb_set(&cpu->thread_kicked, false);
     if (cpu->stop) {
-        cpu->stop = false;
-        cpu->stopped = true;
-        qemu_cond_broadcast(&qemu_pause_cond);
+        qemu_cpu_stop(cpu, false);
     }
     process_queued_cpu_work(cpu);
 }
@@ -1610,12 +1619,12 @@ void pause_all_vcpus(void)
 
     qemu_clock_enable(QEMU_CLOCK_VIRTUAL, false);
     CPU_FOREACH(cpu) {
-        cpu->stop = true;
-        qemu_cpu_kick(cpu);
-    }
-
-    if (qemu_in_vcpu_thread()) {
-        cpu_stop_current();
+        if (qemu_cpu_is_self(cpu)) {
+            qemu_cpu_stop(cpu, true);
+        } else {
+            cpu->stop = true;
+            qemu_cpu_kick(cpu);
+        }
     }
 
     while (!all_vcpus_paused()) {
@@ -1778,11 +1787,8 @@ void qemu_init_vcpu(CPUState *cpu)
         /* If the target cpu hasn't set up any address spaces itself,
          * give it the default one.
          */
-        AddressSpace *as = g_new0(AddressSpace, 1);
-
-        address_space_init(as, cpu->memory, "cpu-memory");
         cpu->num_ases = 1;
-        cpu_address_space_init(cpu, as, 0);
+        cpu_address_space_init(cpu, 0, "cpu-memory", cpu->memory);
     }
 
     if (kvm_enabled()) {
@@ -1799,10 +1805,7 @@ void qemu_init_vcpu(CPUState *cpu)
 void cpu_stop_current(void)
 {
     if (current_cpu) {
-        current_cpu->stop = false;
-        current_cpu->stopped = true;
-        cpu_exit(current_cpu);
-        qemu_cond_broadcast(&qemu_pause_cond);
+        qemu_cpu_stop(current_cpu, true);
     }
 }